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Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/
Citation Citation
- Title:
- The Water Report - Hydro relicensing OR/CA: fish passage transport
- Author:
- Envirotech Publications
- Year:
- 2006, 2008
Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/
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8602. [Image] Lakeview proposed resource management plan and final environmental impact statement [volume 1]
4 v.; maps (some col.); "August 2002"; "January 2003" -- coverCitation Citation
- Title:
- Lakeview proposed resource management plan and final environmental impact statement [volume 1]
- Author:
- U.S. Department of the Interior. Bureau of Land Management; Lakeview Resource Area Office. Lakeview District
- Year:
- 2002, 2006, 2005
4 v.; maps (some col.); "August 2002"; "January 2003" -- cover
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8603. [Image] Klamath Falls Resource Area Planning Update, Winter 2003
U. S. Die artment sf the Interior Bu. rea. u oP L and Management K I W ~ Falls R~& G urnw . 2795 & tdeaonAvepue, BuMng #% Klamath F~ HSO, r egon 97803 . . January 2004 Klamath Falls Resource Area Planning ...Citation Citation
- Title:
- Klamath Falls Resource Area Planning Update, Winter 2003
- Author:
- United States. Bureau of Land Management. Klamath Falls Resource Area Office
- Year:
- 2003, 2004
U. S. Die artment sf the Interior Bu. rea. u oP L and Management K I W ~ Falls R~& G urnw . 2795 & tdeaonAvepue, BuMng #% Klamath F~ HSO, r egon 97803 . . January 2004 Klamath Falls Resource Area Planning Update Winter 2003 United States Department of the Interior BUREAU OF LAND MANAGEMENT Klamath Falls Resource Area 2795 Anderson Avenue, Building 25 Klarnath Falls, Oregon 97603- 7891 Phone: ( 541) 883- 6916 1 Fax: ( 541) 884- 2097 E- Mail Address: Username@ or. blm. gov Website: http: llwww. or. blrngov/ L. akeview/ kfra/ index. htrn KLAMATH FALLS RESOURCE AREA PLANNING UPDATE Winter 2003 The primary purpose of this Planning Update is to inform you about the activities on the Klarnath Falls Resource Area. It is my desire to keep you informed about issues, activities, and opportunities I think are important to the public. More importantly, I am seeking ideas and comments from those who may be affected by multiple- use management programs here on the resource area. This planning update is organized to make it easy for you to find projects of most interest. Projects have been arranged into categories ( i. e., Recent Decisions, New Projects, On- going Projects, and Environmental Education Activities). In addition, each of these categories is sorted by resource topics ( e. g., Lands Program, Timber Sales, etc.). The table will give you a brief description of activities occurring within the Klamath Falls Resource Area and for most projects a location. Refer to one of three maps following the table, for locations of projects. Additional information can be obtained fi- om the contact listed in the project descriptions. If you have any concerns about the proposed actions, please call the Klarnath Falls Resource Area and ask for the " Contact" person listed or the Resource Area Planner as soon as possible. The earlier you get involved, the more capability we have to adjust or change planned actions. Also be alert for news releases and public notices published in the Herald and News as projects reach stages for public involvement. If you want to provide comments to a specific environmental assessment, please send or deliver your written comments addressed to the Field Manager, Klamath Falls Resource Area, by the close of, or postmarked by the last day of the comment period. Your comments and concerns are welcomed, and could influence the final decision on these projects. I would appreciate any comments or suggestions you may have regarding this p l h i n g update or how it could be improved to make it more useful to you. Thank you for your continued interest in BLM's management of public lands. If you have any questions on this planning update, stop by the office or call ( 541) 883- 6916. Jon Raby, Field Manager Klamath Falls Resource Area BUREAU OF LAND MANAGEMENT ' KLAMATH FALLS RESOURCE AREA 2795 ANDERSON AVENUE, BLDG. # t5 KLAMATH FALLS, OR 97603 PHONE NUMBER: ( 541) 883- 6916 MAP PROJECT TITLE & DESCRIPTION LOCATION SPECIAL AREAS STATUS OF COMPLETION CONTACT REF. # AFFECTED ANALYSIS DATE CX = Categorical Exclusion, DNA = Determination of NEPA Adequacy, EA = Environmental Assessment, EIS = Environmental Impact Statement Klarnath Falls Resource Area, Winter 2003 Planning Update - Page 2 New Projects - Watershed Map # 4 T39S. R14E, Secs. 10, 11,14, 15 Norcross Vegetation Treatments - Thin ponderosa pine, remove invasive juniper, restore native vegetative communities ( grass, shrub, pine), and monitor the effects of treatment on vegetative and hydrologic resources. New Projects - Roads and Facilities None Map 1 EA in progress. Road crossing Spencer Creek Spencer Creek Culvert Replacement Spencer Watershed Riparian Fence Reconstruction New Projects - Recreation I Topsy Recreation Site Improvements - Campground water 1 T40S, R7E, Sm. 1 Map # I0 1 system and boat ramp improvements None I DNAS~ nnrrr2004 I Fall 2005 New Projects - Range Management Fall 2007 Fish passage Riparian Protection Mike Turaski in progress CX in progress Map #' DNA Spring 2004 Pitch Log Creek, Long Branch Creek, and Antelope Creek within the Gerber Block Gerber Watershed Riparian Fencing - Emposed project to construct livestock exclosure fencing along about 1.1 miles of Pitch Log Creek, 1.5 miles of Long Branch Creek, and 1.7 miles of Antelope Creek. Maintain fences as riparian exclosures or riparian pastures. Monitor effects of reduced livestock use on vegetation and streambank conditions. New Projects - Timber Management Contract - Fall 2004 Construction - 2005. Summer 2004 Riparian protection Fall 2004 Andy Hamilton Andy Hamilton Dana Eckard Jenny Creek Watershed South Gerber Block Jenny Creek Watershed South Gerber Block I I I None 1 None Jenny Creek EA - Purpose of this EA is to address a variety of forest health and restoration treatments in the Jenny Creek Watershed. Proposed treatments may include; commercial timber sales, non- commercial silvicultural treatments, riparian restoration treatments, aspen stand restoration and road restoration projects. South Gerber EA - Purpose of this EA is to address a variety of forest health and restoration treatments in the South Gerber Block area. Proposed treatments may include; commercial timber sales, non- commercial silvicultural treatments, riparian restoration treatments, juniper woodland treatments, aspen stand restoration and road restoration projects. LOCATION Recent Decisions - Lands Program 1 I I I I I Upper Spencer Creek Road Treatments - Road Upper Spencer Creek I' Implementation in July obliteration, decommissioning, realignment, improvement, T38S, R6E Sections Riparian Resenres DDRBs I 2M Mike Turaski and stream crossing removal. 15 and 23 12123103 Recent Decisions - Wildlife M Map 1 # 43 ecisions - Waters Map 1 # 21 Willow Valley Habitat Enhancement Willow Valley Warm water fishexies Implementation pending Reservoir ODFW involvement. Section 1 Exploration Quarry Expansion Drilling - Authorization for ODOT to conduct exploratory drilling in and around an existingpit to identify a source for additional mineral material. Scott Snedaker I I I I I I Recent Decisions - Fuels Treatment T40S, R6E, Sec. 1. N112NW114 Map 1 # 3 None Boundary Springs Yarding and Removal of Cut Juniper - Purpose of this project is to remove juniper boles in previously treated areas to reduce fuel accumulation and promote commercial use of juniper. None Ben Hall 1 & 2, Cerber Potholes, Sehnipps, and FIZ 95- 71 Juniper Yarding - to remove juniper boles in previously treated areas to reduce fuel accumulation and promote commercial use of juniper. Fint 360 acres yarded and material sold to Area FTZ- 1 04 utilization local mill ( REACH) that utilizes juniper. Exploration initiated as weather permits. Rebecca La& Linda Younger Mike Bechdolt Various Mike Bechdolt Klamath Falls Resource Area, Winter 2003 Planning Update - Page 3 Fuel treatment, juniper utilization DNA completed. Project on hold. BUREAU OF LAND MANAGEMENT KLAMATH FALLS RESOURCE AREA AVEl PHONE NUMBER: 2795 ANDERSON AVENUE, BLDG. # 25 ' E ( 541) 8836916 SPECIAL AREAS STATUS OF AEFECrED ANALYSIS PROJECT TITLE & DESCRIPTlON LOCATION AEFErnD COMPLETION DATE CONTACT r~ ann~ ng~ na~ ysis~ lrnp~ ernen- r Gareinoenr al RMP Evaluation~ Revision- In the final settlement agreement to the American Forest Resource Council vs. Bureau of Land Management ( BLM) litigation, the BLM is directed to revise Resource Management Plans ( RMPs) in western Oregon by December, 2008. The BLM began the revision process in 2003, evaluating current plans and developing a project preplan. Project status information will be posted on the District website. Formal scoping is expected in the second half of calendar year 2004. RMP Revision - FY 2008 None Resource Area Wide All Resources Evaluation in progress Don Homeins GerberlWillow Valley Coordinated Resource Management Plan ( CRMP) Watershed Analysis. - A local planning team of private landowners, StatelFederal land managers, and concerned citizens recommends future project implementation on private land in CRMP area. CRMP meetings/ discussions are continuing Map 1 # 5 GerberNillow Valley Watershed Completion date open-Rivate Lands ended Don Homeins Lany Frazier Wild and Scenic River designation, Area of Critical Concern, T& E spp. Map l # 28 Upper Klamath River Management Plan DEE - Develop a management plan in response to Wild and Scenic Riven Act requirements for river segment approx. 20 miles long encompassing 6,400 acres. Klarnath River - J. C. Boyle Reservoir, Oregon, to Copco One Reservoir, California Draft EIS released 511 612003. Comment period closed 8/ 13/ 2003. FEIS December 2004 Upper Klamath Basin and Wood River Wetland Resource Management Plan Amendment for the Fourmile Creek portion of this area. The purpose of this project is to amend the Upper Klamath Basin and Wood River Wetland RMP EIS to designate the Fourmile Creek area as an Area of Critical Environmental Concern. Riparian Wetland Area of Critical Environmental Concern ( ACEC) Draft EIS to be prepared. Specific schedule and completion date unknown. ACEC Evaluation submitted to District Manager, October 2000. Map 1 # 29 Fourmile Creek Wetland Lou Whiteaker Lany Frazier Draft MOU presented to the Tribal Council on 2/ 22/ 2000. Waiting for Tribal feedback. - -- Unknown Memorandum of Understanding ( MOU) between the Klamath Tribes and BLM for Coordination on Management Issues. - The proposed MOU identifies a process to coordinate tribal involvement with BLM management actions on public lands. Late- Successional Reserve ( LSR) Assessment. A single LSR Assessment was prepared to assess all 19 Unmapped LSRs designated within the resource area and develop management recommendations for these areas to restore or maintain late successional habitat. Former Tribal None Lakeview District Lands - None Draft submitted to and pending approval from the Regional Ecosystem Office ( REO). BLM lands west of Highway 97 covered by the Northwest Forest Plan Unmapped Late Successional - Reserves. Analysis is complete. - ou Whiteaker Klamath Falls Resource Area, Winter 2003 Planning Update - Page 4 2795 ANDERSON AVENUE, BLDG. # 25 KLAMATH FALLS, OR 97603 541) 8834916 STATUS OF COMPLETION DATE CONTACT AFFECTED I ANALYSIS I - Map 2 # 46 - None Map 1 -# 7 Map 1 # 22 - None Map 2 # 44 Map 2 # 30 Oak Thinning - Thin 100 acres of oak woodland to restore plant communities and reduce potential for stand replacing wildfires and overall fire management costs. Noxious Weed Treatments - contain1 reduce noxious weed populations using integrated pest management ( manual, mechanical, chemical, and biological control methods). Activities tier to KFRA Integrated Weed Control Plan ( IWCP) and EA- OR- 014- 93- 09 approved July 21, 1993. T40S, R6E, Sec. 35 T41S, R6E, Sec. 3 and 10 T41S, WE, Sec. 1 Weed- infested sites throughout the Klamath Falls Resource Area Bitterbrush Planting - - Various locations Ongoing Planning/ Analysisflmplementation - Vegetation Treatments I I I -- -- - Horton Rim I Windy Ridge Juniper Removal - Juniper treatment for fuel reduction and wildlife habitat inmovement GerberlWillow Valley Riparian Conifer Treatments - removing invasive juniper from riparian areas in the Gerber Block G& I Willow Valley Watersheds Spencer Creek Riparian Thinning- thin 80 acres of iuniverlmixed conifer T38S, R6E, Secs. 21 and 28 Clover Creek DDRB - 108 acres mechanical treatment. T. 38S, R6E, Sec. 27.34 Off Spencer Hookup Road I Document is tiered to the Northwest Area Noxious 1 Noxious Weed I Klamath River canyon/ ACEC None I Wyd Control Program Treatments occur May - EIS avvroved December I October on a vearlv I Lou mitaker Analysis in Progress. 1985: supplemented in March 1987. Analysis completion expected Spring 2004. - . basis. Mule deer winter range. Rob Roninger None I EA completed Riparian Reserves EA completed. I Ongoing - Possible in Key Watershed completion in 2004 I Mike Turaski cx completed. h j e c t in progress. Riparian, critical sucker habitat 2- 3 year implementation began Spring 2003. Ongoing Planning/ Analysis/ Implementation- Lands Treatments occur on a yearly basis. Hapa DNA completed. Bald Eagles, Survey and Manage species Map l # 8 Greg Reddell Map 1 # 17 Implementation initiated 2003 - Ongoing DNA completed in Spring 2001. Mike Turaski Map I -# 20 Map 1 -# 9 On hold for RE0 approval of LSRA - ~- - Dehlinger Trust - Residential Road ROW and easement. Bmner Land Exchange Steve Haper Bly Dump Sale ( EA No. OR- 014- 97- 01) - Purpose of # l8 this project is to sell Bly Transfer Station to Klamath Co. I of Bly'OrrgOn. Map I I None Known I Analysis in progress I Winter2004 Linda Younger T40S, RIOE, Sec. 9 South Bryant Mountain Al B ~ n eLra nd Sale Nancy Charley Trust Reciprocal Easement and ROW Klamath Falls Resource Area, Winter 2003 Planning Update - Page 5 None Unknown T41S, R13E. Sec. 14 T38S, RSE, Sec 12- 13 Reciprocal Easement Pending On hold Unknown Borders Riparian Reserve Winter 2004 Spring 2005 EA completedl Decision record pending CX completed, easement pending Linda Younger Linda Younger Spring 2004 Fall 2004 Linda Younger Linda Younger MAP PROJECT TITLE & DESCRIPTION REF. SPECIAL AREAS IC OMPLI AFFECTED Ongoing Planning/ Analysis/ Imp LOCATION ETION DATE I COMA dementation - rimber Sales I - - - Non - Non Roaming Salvage EA - The purpose is to provide NEPA coverage for timely salvage of timber mortality over the entire Resource Area. Entire Resource Area Unknown Preparing scoping letters. Spring 2004 I MI* cBechdo1t FY 04 - Baldy Salvage Timber Sale - Sale is designed to harvest windthrown trees as a result of 2003- 4 windstorms and scattered insect and disease related mortality. Anticipated volume is I . O- 1 SMMBF on 300- 500 acres. FY 04 - Matchbox Title I1 Service Contradl'imber Sale - The project consists of a Forest Health Density ManagementIUnderstory Thinning of overstocked mixed conifer stands. The sale is being designed under the Secure Rural Schools and Community Self- Determination Act of 200 - Public Law 106- 393. A service contract will be used to thin, yard, and deck trees from an overstocked mixed conifer stand. A timber sale contract will be used sell the decked material. Approximately 300 acres are scheduled for treatment resulting in about 600 MBF. Primarily in the Surveyor Mtn and Burton Butte Areas. May also include some eastside areas. Timber Sale is scheduled to be sold in Mike Bechdolt May or June of 2004 Presently marking some of the scatted salvage Matrix Contract is scheduled to be awarded in June or Mike Bechdolt July of 2004 Chase Mountain Area T. 40S., R. 7E., Sec. 9 Presently Preparing the Matrix Timber Sale Contract Proposed sale date: Summer 2005 Mike Bechdolt Riparian Reserves T38S., ME., Sec. l3,15,23, 25 and 26 Reserves! Matrix Buck Again Timber Sale - An estimated 700 acres is designed for treatment in the Spencer Creek watershed near Buck Lake. Approx. 4 MMBF to be harvested. Sale preparation. Chew Timber Sale- Approximately 1,000 acres density management understory reduction adjacent to and south of T40S. R6E, Secs. 1, 1 1,14 T40S, R7E. Secs. 3 and 5 Proposed sale date Mike Bechdolt Hwy 66 west of la math Falls. ~ aleanal~ zuendd er the Sale preparation. Spring 2004 or 2005. Topsy/ Pokegama/ Hamaker EA (# OR- 0 14- 98- 01 ). Estimated volume of 2.5 m b f . None Oneoine Plannine/ Analvsis/ Implementation - Roads and Facilities Map 1 # 77 Map # 73 Klamath Falls Resource Area, Winter 2003 Planning Update - Page 6 Sediment Traps - 30 sediment traps on BLM, USFS, and private land Map I # 6 Gcrber Road Sediment Reduction - road resurfacing and drainage improvement to reduce sediment delivery to streams in the Gerber Watershed Spencer Creek Watershed and Gerber Block Gerber Washrack- Installation of facility at Gerber Guard Station for washing equipment to control the suread of noxious weeds and overhead filling of tankers. 5 stream crossings None Gerber Guard Station Critical sucker habitat DNA completed. Sediment traps installed. Noxious weed prevention EA completed. Implementation initiated I Fall 2004 Monitoring in progress. Mike Turaski CX completed. Mike Turaski Pending funding. Bob Crumrine/ Brian McCarty - I - 1 - Map 1 # 6 Ongoing Planning/ Analysis/ Implementation - Roads and Facilities ( continued) Gerber Area Recreation Improvements - ( RMP ROD EIS 6- 2- 95, pp. 49- 50) - Project falls under corrective maintenance, improvement or replacement in the Klamath Falls RMP. Existing maintenance, improvement or replacement include: rocking and chip- sealinglpaving road system and campsites, picnic tables, barrier posts, camp host RV holding tank, hydrants, Barnes Valley Boat Ramp access road. Scott Smter Gerber Reservoir Recreation Site Gerber Area Primitive Camp and Day Use Sites Recreation Improvements. The objectives of these improvements are to update or improve existing facilities to continue to provide an enhanced recreational experience and satisfy visitor needs. T& ESpecies ( suckers and bald eagles) Scott Senter Stan H Spring, Potholes, Miller Creek, Frog Camp, Pitchlog Creek, Wildhorse, Basin, Rock Creek and Willow Valley Reservoir Map l # 6 Projects in compliance GththeKFIURMP. Determination of NEPA Adequacy completed and approved on 10128199. Wood River Wetlands Project - Remaining projects: Finish installation of fish screen on 7- mile Canal diversion structure and floating boardwalk, interpretive signs, and trail system. Surface rock dike roads from bridge to 7- mile Canal and add group interpretive site. Juniper Chip Road - Using juniper debris for biomass or by- product in Oshea ( mZ 95/ 71), and Norcross Springs. FY 2004 - Miller Creek- Potholes trail to be constructed T& E Species ( suckers) wood River Property I I Upper Klamath Basin and Wood River Wetland I A Determination of NEPA Adequacy ( DNA) completed 9/ 25/ 2000. ( Project contingent on funding) Map 1 # 25 - Map 2 # 70 FY 2004- sidewalks and pinic tables to be installed at Willow Valley Res. Wedge Watkins Joe Foran 25 miles north of Klamath Falls, Oregon T 39 8 40s. R13,14,14XE I None Known I I Stewardship contract EAcompIeted being developed. Ongoing Projects - Prescribed Burning and Fuels Treatment Wetlands Map 2 # 2 Resource Management Plan EIS; decision signed June 16,1995. Joe Foran Pending funding Short Lake Broadcast Bum - Prescribe bum approx. 280 acres outside FTZ to reduce fuel loading and risk of wildfire. T38S. R1 I E, Sec 20 & 29 - - - - - - -- - - - - - Miller Creek Mechanical Treatment - Proposal to use mechanical piling instead of prescribed buming of a~ oroximatelv I00 acres. Map 2 # 37 - T39S. R13E. Sec. 14 & 23 Analysis Completed ACEC 1 FONSl and Decision Record on 3- 24- 99. Joe Foran None Known Project delayed. EA completed Fuels Maintenance Treatments # t ( KCER - 00- 03) Treat approximately 1,200 acres to remove fire- prone brush, excessive levels of hazardous fuels ( less than 6" in diameter), and small conifers that are ladder fuels and threats to over stow trees bv crown fire.. Map 2 # I 1 Spring 2004 Klamath Falls Resource Area, east of Hwy 97. See Prescribed Fire Map for locations. None Known Dale Brush Map 2 # 62 Analysis completed. Multiple year implementation - ongoing. Mechanical Slash Treatment Project - Mechanical treatments ( shearing, chipping, or grinding) to reduce fuels and control vegetation on approx. 12,000 acres. Joe Foran Multiple Locations Resource Area Wide None / Second DNA completed. Klamath Falls Resource Area, Winter 2003 Planning Update - Page 7 Projects tasked out over a three year period - ongoing. PROJECT K. 1 TITLE & DESCRIPTIO SPECIAL AREAS STATUS OF 4 CONTACT AFFECTED ANALYSIS - Map 2 -# 39 Map 2 # 40 - Map 2 -# 42 Map 2 # 38 Map 2 # 63 Map 2 # 64 - Map 2 # 65 & # I9 Map 2 # 45 - Map 2 # 49 - Stukel98- 1 Mechanical Treatment - Mechanical piling T40S, RIOE, Sec. 10,11,14, instead of pmcribed burning of approximately 500 acres. 23,24 Stukel98- 2 Prescribed Burn - Prescribe bum approx. 3,000 acres to: Reintroduce fire to restore plant communities, while reducing the potential for stand-replacement wildfires and overall fire management costs. T40S, RIOE, Sec. 12,13,24 T40S, RllE, Sec. 7& 18 HamakerIChase Fuels Treatment - Reduce Fuels on T40S, R8E 4000 acres south of Hwy 66 I Stiles Spring Prescribed Burn - Project purpose to bum approximately 1,000 acres to: Reinduce fire to restore sustainable function and structure to plant communities, while reducing the potential for stand- replacement wildfires, and reducing overall fire management costs. Stukel98- 7 & 9 Prescribed Burns - Prescribe bum approximately 525 acres to: reintroduce fire to restore plant communities, reduce overall fire management costs and the potential for stand- replacing wildfires. Statelinel Holbmk Prescribed Bums - Presmie bum approximately 4.000 acres to reduce fuel loading and risk of catastrophic wildfire. T37S, RIOE, Sec. 3- 5,9- 11, 14- 15 T40S, RllE, Sec5 & 6 T. 40S, R15 E., T. 41S, RISE. -- Big Adobe Prescribed Burn - Prescribe bum approximately 6,700 acres to reduce fuel loading and risk of catastrophic wildfire ( includes Wild Midway Rx Bum) Range- Juniper Treatment - Hazardous fuel reduction, T40S. R12E. Sec. 1 1 using mechanical and prescribed fire methods. T41 S, RISE Upper Swan Prescribed Burn - Project purpose: bum approximately 98 acres to restore sustainable function and structure to plant communities, reduce potential for stand-replacement wildfires and overall fire management costs. g and Fuels Treatment ( continued) None Known Project0 t1ie 4r- s9 4to- 0E9A. # OR- Project ongoing Joe Fmn T37S, RIOE, Sec. 24 & 25 T37S, RI 1.5E, Sec. 31 Bald Eagle ( Analysis Completed- I 200 acres treated in FY I None Analysis Completed Project tiers to EA # OR- 014- 94- 09. EA completed Wildlife Habitat Riparian Initiated Winter 2001 Fall 2004 Joe Foran Project delayed until the Spring 2004 Bald None Bald Eagle I Planned projects tier to the Promammatic Fire I Joe Foran Joe Foran Project initiated, 2- 3 year implementation FONSI - 12- 1 9- 99. 2000; Remainder Decision Record on 01 - 25- 2000 ,, Foran Joe Foran Analysis Completed Project tiers to EA # OR- 014- 94- 09) approved on 4- 29- 94. Initiated Winter 2001 Klamath Falls Resource Area, Winter 2003 Planning Update - Page 8 Wildlife forage/ habitat improvement 130 acres completed Remainder Spring 2004 Accomplished 1500 acres. Remainder Fall 2004. Steve Pehick- Underwood Joe Foran DNA completed ongoing 2- 3 year implementation Joe Foran .. " "" . 7 < .,.. - . . 7 - " b - . " < * - - ' 7 , 4 . , v ,-' w., ,. ' q"* -*?, . x*-.. s,... >,% VW? P ,*.- 7i*,- .*. x., < 8 SCHEDULE OF PROPOSED PROJECTS BUREAU OF LAND MANAGEMENT KLAMATH FALLS RESOURCE AREA * 2795 ANDERSON AVENUE, BLDG. # 25 KLAMATH FALLS, OR 97603 PHONE NUMBER: ( 541) 883- 69 MAP PROJECT TITLE & DESCRIPTION LOCATION I SPECIAL AREAS STATUS OF ANALYSIS COMPLETION CONTACT REF. # AFFECTED DATE Rangeland Health Standards Assessments - in progress I These assessments compare the monitoring information collected against the five Standards for Rangeland Health and propose management changes if current grazing use is not meeting the Standards, or not making significant improvement towards meeting them. Changes are implemented through the grazing decision or agreement process. z3I Re16 Allotment ( M893) I South Langell Valley I None Known I Assessment in progress I Summer 2004 I Dana Eckard M$\ 3 I KIamatL Forest Estates Allotment ( M862) 1 North of Bonanza -~ Yainax Allotment ( M861) I None Known I Assessment in progress I ~ ~ - 2 0 0 4 I Bill Lindsey North of Bonanza Map # 55 None Known ? G3 Haskins Allotment (# 0826) y&' Assessment in progress Masten Allotment ( M842) Map # 68 North of Bonanza Kellian Allotment (# 0834) Hungry Hollow Allotment (# 0830) Klamath Falls Resource Area, Winter 2003 Planning Update - Page 9 SUM 2004 North of Bonanza Adams Allotment (# 0800) Rangeland Health Standards Assessments - completed* Bill Lindsey None Known North of Bonanza North of Bonanza None Known East of Bonanza Bill Lindsey Assessment in progress None Known None Known * A total of 37 Rangeland Health Standards Assessments have been completed to date, 1 has been completed so far in FY 2004. Assessment in progress None Known None Known Assessment completed Summer 2004 Assessment in progress Assessment in progress Map North of Bonanza December 2003 # 48 Dana Eckard Summer 2004 Assessment in progress McCartie Allotment (# 0860) Dana Eckard Summer 2004 Summer 2004 Dana Eckard Summer 2004 Dana Eckard Dana Eckard Presentations/ Environmental Education Programs/ Tours ( Fiscal Year to Date) Fun With Fungi I 1 1/ 2/ 03 I Seven Mile Area Adults 25 I What Was Presented Overview of past and current outreach events; permit sales Wood River Wetland Field Trip Operation Indian Rocks ARPA Investigation 1 1 1/ 3/ 03 ( Central Washington University 1 Faculty and Students I 51 I Date 1 Group / Age # of People 1 01 1 5/ 03 10/ 28/ 03 Where Cultural Resource Management and the NEPA Process Archaeological Investigations in the Great Basin I Wildlife Management 1 12/ 16/ 03 1 OIT - " Expanding Horizons" I 8* Grade Students I 120 1 Ross Ragland Theater Wood River Wetland Coloring Books 1 1/ 3/ 03 1 1/ 4/ 03 Klarnath Falls Resource Area, Winter 2003 Planning Update - Page 10 Answer People/ Adults Oregon Institute of Technology Students I 1 1 11 9/ 03 Shasta Elementary School -- - S - 290 Fire Behavior 25 - 30 Central Washington University Central Washington University Elementary Students 30 12/ 20/ 03 Graduate Student Seminar Graduate Student Seminar 24 35 Klamth Community College Adults 8 EventIActivlty Date Location Contact( s) F 01 rarnclpanrs ( EmployeeslPublic*) IBald Eagle Conference I Februaryl3- IS I Oregon Institute of Technology I Steve Haynerl Kelly Hollums I l~ arthD ay I April I Jefferson Square Mall I Greg Reddell I Klamath Watershed conference February 24 - 26 Wilderness & Horse Packing Clinic** International Migratory Bird Day IMBD Pre- event Classes -- - IMBD Educator Workshop Oregon Institute of Technology May ( IMBD) April 24 IMBD Event National Free Fishing Day RAP Camp Klamath County Fair Klamath Falls Resource Area, Winter 2003 Planning Update - Page 11 Wedge WatkinslKelly Hollums April 16 - pp - - Sixth Grade Forestry Tour National Public Lands Day Oregon Archeology Celebration Klarnath County Fairgrounds Klamath Community College May 8 June June August Tonya PinckneyIScott Senter Steve Hayner, et al OSU- Klamath Co. Extension * Numbers of public participants for large events are estimated. ** BOLD WRITING indicates that project is funded with District Outreach dollars. September September September Veteran's Park To Be Announced Camp Esther Applegate Klamath County Fairgrounds Steve Hayner, et al Steve Hayner Scott Snedaker To Be Announced PinckneylSenter Clover Creek Educational Area To Be Announced To Be Announced ~ p Bill Johnson To Be Announced Michelle Durant Glama th Falls Resource Area Miscellaneo~ wP roject Loca ticms R6E RBE R7E RBE RBE RlOE RIIE R12E R13E R14E R14.6E R16E Klamath Falls Resource Area, Winter 2003 Planning Update - Page 12 N LEGEND R5E R6E R7E R8E RQE RIOE R l l E R12E R13E R14E R14.5E R15E Klarnath Falls Resource Area, Fall 2003 Planning Update - Page 13 UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF LAND MANAGE~ ENT Klarnath Falls Resource Area Office 2395 Parderson Avenue, Building a 5 Kfamth MIS. Oregan 97603 OF. FIGIAL, BUSI~ ESS PENALTY FOR PRIVATE USE, $ 300 Marita Kunkel Library Director Oregon Institute of Techolagy 3201 Cempus Dr Klamath Falls, OR 97601
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We, the U.S. Fish and Wildlife Service (Service), announce a revised 90-day finding for a petition to remove the Lost River sucker [Deltistes luxatus) and shortnose sucker [Chasmistes brevirostris) throughout ...
Citation Citation
- Title:
- Federal Register - Endangered and Threatened Wildlife and Plants; Notice of Revised 90-Day Petition Finding and Initiation of a 5-Year Status Review of the Lost River Sucker and Shortnose Sucker
- Author:
- Larsen, Ron
- Year:
- 2004, 2008, 2005
We, the U.S. Fish and Wildlife Service (Service), announce a revised 90-day finding for a petition to remove the Lost River sucker [Deltistes luxatus) and shortnose sucker [Chasmistes brevirostris) throughout their ranges from the Federal List of Threatened and Endangered Wildlife and Plants (List), pursuant to the Endangered Species Act (Act) (16 U.S.C. 1531 et seq.). We find that the petition does not present substantial scientific or commercial information indicating that delisting of the Lost River and shortnose suckers may be warranted. As a result of the 1995, 1996, and 1997 fish die-offs, the endangered suckers experienced significant losses of thousands of adult suckers and have not recovered. Although the petition and information in our files do not provide new information relevant to the status of the Lost River and shortnose suckers, we are initiating a 5-year review of these species under section 4(c)(2)(A) of the Act to consider any new information that has become available as a result of recent actions to reduce threats to the species, and to provide the States, tribes, agencies, university researchers, and the public an opportunity to provide information on the status of the species. We are requesting any new information on the Lost River and shortnose suckers since their original listing as endangered species in 1988 (53 FR 27130)
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8605. [Image] A review of scientific information on issues related to the use and management of water resources in the Pacific Northwest
Abstract Everest, Fred H.; Stouder, Deanna J.; Kakoyannis, Christina; Houston, Laurie; Stankey, George; Kline, Jeffery; Alig, Ralph. 2004. A review of scientific information ...Citation Citation
- Title:
- A review of scientific information on issues related to the use and management of water resources in the Pacific Northwest
- Year:
- 2004
Abstract Everest, Fred H.; Stouder, Deanna J.; Kakoyannis, Christina; Houston, Laurie; Stankey, George; Kline, Jeffery; Alig, Ralph. 2004. A review of scientific information on issues related to the use and management of water resources in the Pacific Northwest. Gen. Tech. Rep. PNW-GTR-595. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 128 p. Fresh water is a valuable and essential commodity in the Pacific Northwest States, specifically Oregon, Washington, and Idaho, and one provided abundantly by forested watersheds in the region. The maintenance and growth of industrial, municipal, agricultural, and recreational activities in the region are dependent on adequate and sustainable supplies of fresh water from surface and ground-water sources. Future development, especially in the semiarid intermountain area, depends on the conservation and expansion of the region's water resource. This synthesis reviews the state of our knowledge and condition of water resources in the Pacific Northwest. Keywords: Water distribution, flow regimes, water demand, conflicts, tools, water use.
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8606. [Image] Water quality monitoring : technical guide book
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8607. [Image] Forestry program for Oregon
This document sets forth the Board of Forestry's strategic vision for Oregon's forests for the next eight yearsCitation -
"July 2003."; "GAO-03-514."
Citation -
8609. [Image] Biological assessment of Klamath Project's continuing operations on the endangered Lost River sucker and shortnose sucker
BIOLOGICAL ASSESSMENT OF KLAMATH PROJECT'S CONTINUING OPERATIONS ON THE ENDANGERED LOST RIVER SUCKER AND SHORTNOSE SUCKER U.S. Bureau of Reclamation Mid-Pacific Region Klamath Basin Area Office Klamath ...Citation Citation
- Title:
- Biological assessment of Klamath Project's continuing operations on the endangered Lost River sucker and shortnose sucker
- Author:
- United States. Bureau of Reclamation
- Year:
- 2001, 2005
BIOLOGICAL ASSESSMENT OF KLAMATH PROJECT'S CONTINUING OPERATIONS ON THE ENDANGERED LOST RIVER SUCKER AND SHORTNOSE SUCKER U.S. Bureau of Reclamation Mid-Pacific Region Klamath Basin Area Office Klamath Falls, Oregon February 13,2001 TABLE OF CONTENTS 1.0 INTRODUCTION 2 2.0 DESCRIPTION OF THE ACTION 3 3.0 DESCRIPTION OF HISTORIC OPERATIONS 6 4.0 ENDANGERED SPECIES POTENTIALLY AFFECTED BY THE KLAMATH PROJECT 16 5.0 ENVIRONMENTAL BASELINE 60 6.0 EFFECTS OF KLAMATH PROJECT ON BALD EAGLES 60 7.0 EFFECTS OF KLAMATH PROJECT ENDANGERED SUCKERS 63 8.0 PROPOSED CRITICAL HABITAT FOR ENDANGERED SUCKERS 82 9.0 CUMULATIVE EFFECTS 84 10.0 DETERMINATION OF EFFECTS 89 11.0 LITERATURE CITED 90 12.0 PERSONAL COMMUNICATIONS 100 13.0 APPENDIX 1 - ESA CONSULTATION REVIEW 101
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8610. [Image] Soil survey of Klamath County, Oregon, southern part
Foreword The Soil Survey of Klamath County, Oregon, Southern Part, is the product of many soil scientists, plant specialists, soil engineers, extension specialists, land owners, and others who worked ...Citation Citation
- Title:
- Soil survey of Klamath County, Oregon, southern part
- Author:
- Cahoon, Joe
- Year:
- 1985, 2006, 2005
Foreword The Soil Survey of Klamath County, Oregon, Southern Part, is the product of many soil scientists, plant specialists, soil engineers, extension specialists, land owners, and others who worked and cooperated as a team to complete this project. In this report are many kinds of basic information about the soils in the area. This information can be helpful in making decisions about the management of irrigated soils for optimum crop production, in planning land uses for urban and suburban areas, and in determining the needs for many other uses, for example, forestry, range, wildlife, and recreation. This soil survey has been prepared for many different users. Farmers can use it to help select the most suitable crop for the kind of soil; ranchers can use it to determine amount of forage production and the kinds of plants most suited to range or woodland; foresters can use the survey to find information about kinds of trees, potential for tree growth, and special soil features.
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This report presents information on biogeography and broad-scale ecology (macroecology) of selected fungi, lichens, bryophytes, vascular plants, invertebrates, and vertebrates of the interior Columbia ...
Citation Citation
- Title:
- Macroecology, paleoecology, and ecological integrity of terrestrial species and communities of the interior Columbia River basin and northern portions of the Klamath and Great Basins
- Author:
- U.S. Department of Agriculture. Forest Service. Pacific Northwest Research Station; U.S.Department of the Interior. Bureau of Land Management.
- Year:
- 1998, 2006, 2005
This report presents information on biogeography and broad-scale ecology (macroecology) of selected fungi, lichens, bryophytes, vascular plants, invertebrates, and vertebrates of the interior Columbia River basin and adjacent areas. Rare plants include many endemics associated with local conditions. Potential plant and invertebrate bioindicators are identified. Species ecological functions differ among communities and variously affect ecosystem diversity and productivity. Species of alpine and subalpine communities are identified that may be at risk from climate change. Maps of terrestrial ecological integrity are presented. Keywords: Macroecology, paleoecology, ecological integrity, terrestrial communities, ecosystems, wildlife, fungi, lichens, bryophytes, vascular plants, invertebrates, arthropods, mollusks, amphibians, reptiles, birds, mammals, endemism, interior Columbia River basin, Klamath Basin, Great Basin.
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8612. [Image] The Endangered Species Act and the National Research Council's interim judgment in Klamath Basin
The controversial 2001 U.S. Fish and Wildlife Service water allocation decision in the Klamath Basin has been portrayed as an example of scientific guesswork operating under a flawed Endangered Species ...Citation Citation
- Title:
- The Endangered Species Act and the National Research Council's interim judgment in Klamath Basin
- Author:
- Cooperman, Michael S. ; Markle, Douglas F.
- Year:
- 2002, 2005
The controversial 2001 U.S. Fish and Wildlife Service water allocation decision in the Klamath Basin has been portrayed as an example of scientific guesswork operating under a flawed Endangered Species Act. This conclusion has been based on an interim National Research Council report, quickly prepared in late fall, 2001. We have reviewed several iterations of the NRC Interim Report as well as all Biological Opinions and management documents related to Klamath Basin suckers and provide an overview. The 2001 Biological Opinion and the Interim Report illustrate the lack of consensus typical of scientists in the early stages of exploring a complex system. Unfortunately, the decision created hardship for a small group of people and the lack of scientific consensus has politicized the debate. Politicians have assumed that the Interim Report has primacy in the scientific debate when, in fact, its speedy construction contributed to multiple errors that detract from its scientific usefulness. The NRC Interim Report has, instead, primarily served to deflect debate away from the needs of listed fishes to one about shortcomings in the Endangered Species Act. Although the process of science has been served by both the 2001 Biological Opinion and the Interim Report, both have shortcomings, and we see no justification for either side labeling the other's decisions or conclusions as "not sound science."
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8613. [Image] Crater Lake National Park, Oregon: draft visitor services plan, environmental impact statement
"November 1997."; Includes bibliographical references (155-163) and indexCitation -
8614. [Image] Fire-insect-disease relationships of a lodgepole pine ecosystem in south-central Oregon
ill.; "July 1985."; "Final report on National Science Foundation Grant DEB-8109813"-- Cover; Includes offprints of several project-related publications by the authors; Includes bibliographical referen...Citation Citation
- Title:
- Fire-insect-disease relationships of a lodgepole pine ecosystem in south-central Oregon
- Author:
- Gara, Robert I.
- Year:
- 1985, 2008
ill.; "July 1985."; "Final report on National Science Foundation Grant DEB-8109813"-- Cover; Includes offprints of several project-related publications by the authors; Includes bibliographical references
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Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/
Citation Citation
- Title:
- The Water Report - Watershed assessments: the Upper Klamath Basin process
- Author:
- Envirotech Publications
- Year:
- 2004, 2008, 2006
Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/
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8616. [Article] Applying GPS and Accelerometers to the Study of African Savanna (Loxodonta africana) and Asian Elephant (Elephas maximus) Welfare in Zoos
African savanna elephants (Loxodonta africana) and Asian elephants (Elephas maximus) are a focus of welfare research in zoos due to their high intelligence, complex social structure, and sheer size. Due ...Citation Citation
- Title:
- Applying GPS and Accelerometers to the Study of African Savanna (Loxodonta africana) and Asian Elephant (Elephas maximus) Welfare in Zoos
- Author:
- Holdgate, Matthew Robert
- Year:
- 2015
African savanna elephants (Loxodonta africana) and Asian elephants (Elephas maximus) are a focus of welfare research in zoos due to their high intelligence, complex social structure, and sheer size. Due to these challenges, some argue that zoos are inherently incapable of providing appropriate care for elephants, while others believe that zoos can fulfill the needs of these species with improved husbandry. There is a general consensus from both within and outside of zoos, however, that zoos must improve their elephant programs or cease exhibiting these animals altogether. Now more than ever, applied research on zoo elephant welfare is needed to provide context for this debate. Researchers are interested in how far zoo elephants walk due to the potential health and welfare benefits of walking in these highly mobile species. Zoo researchers recently adopted GPS technology to study elephant walking, and preliminary evidence suggests that African elephants in large zoo exhibits walk distances that correspond with wild elephants under non-extreme conditions. However, data are limited from Asian elephants and from elephants in more typically-sized exhibits. In Chapter Two, I discuss important methodological considerations of utilizing GPS in a zoo environment, including an introduction to the technology, sources of error and mitigation, methods to improve GPS performance, and possible effects of GPS device attachment on animal behavior. This review shows GPS performance is adequate for tracking zoo elephant walking when proper methodological techniques are applied, and should serve as a useful reference for zoo researchers considering using GPS. In Chapter Three, I used GPS anklets to measure outdoor daily walking distance in 56 adult female African (n = 33) and Asian (n = 23) elephants housed in 30 zoos. I collected 259 days of data and found that elephants walked an average of 5.34 km/day with no significant difference between species. Multivariate regression models predicted that elephants with more dynamic feeding regimens (more diverse feeding types and frequencies; unscheduled feeding times) will walk more. Distance walked was also predicted to be higher in elephants that spend time in a greater number of different social groups. Distance walked was predicted to decline with age. Finally, I found a significant negative correlation between distance walked and nighttime space experience. The results of the analysis suggest that zoos that want to increase walking in their elephants need not rely solely on larger exhibits, but can increase walking by adding quality and complexity to exhibits. However, my results failed to establish a definitive link between walking distance and other validated measures of elephant welfare. Thus, the direct health and welfare benefits of walking in zoo elephants remain unresolved. Resting behaviors are an essential component of animal welfare, but have received little attention in zoological research. In Chapter Four, I used accelerometers in anklets to complete the first large-scale multi-species investigation of zoo elephant recumbence. I collected 344 days of data from 72 adult female African (n = 44) and Asian (n = 28) elephants at 40 zoos. I found that African elephants are recumbent an average of 2.14 hours/day, which is significantly less than Asian elephants at 3.22 hours/day. Multivariate regression models predicted that African elephant recumbence increases when they experience more space at night, and Asian elephant recumbence increases when they spend time housed alone. Both species showed a similar response to substrate, such that African elephants spending time on all-hard substrates are predicted to be recumbent less, while Asian elephants spending time on all-soft substrates are predicted to be recumbent more. The discovery that occasional non-recumbence is a common behavior in zoo elephants also introduces a new area of research that may have important animal welfare consequences. Finally, this study established that zoos should continue their efforts to replace hard substrate with soft substrate in order to provide zoo elephants with environments that facilitate recumbence. Overall, this work assessed walking and recumbence in zoo elephants, which will allow zoos to gauge the prevalence of these behaviors in their elephants as compared to the sub-population studied here. A variety of factors that are associated with these behaviors were also identified. With this information, zoos can prioritize modifications to their facilities and animal management programs to create an environment that encourages zoo elephants to express walking and recumbence behavior, should they choose to do so. This work is one component of the Elephant Welfare Project, the largest zoo animal welfare project ever undertaken, and is unprecedented in both scope and scale. The project was funded by the Institute of Museum and Library Services (IMLS), an independent, U.S., federal, grant-making agency that supports libraries, museums, and zoos. At the time of this writing, the first manuscripts from this project are being submitted to academic journals. These papers will describe the prevalence and distribution of a variety of elephant behaviors and welfare indicators, serve as a benchmark for future elephant welfare studies, and aid in decision making with regard to best practices in elephant management.
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8617. [Article] Population Structure of Island-Associated Pantropical Spotted Dolphins (Stenella attenuata) in Hawaiian Waters
Understanding gene flow, diversity, and dispersal patterns is important for predicting effects of natural events and anthropogenic activities on dolphin populations. With the very recent exceptions of ...Citation Citation
- Title:
- Population Structure of Island-Associated Pantropical Spotted Dolphins (Stenella attenuata) in Hawaiian Waters
- Author:
- Courbis, Sarah Shelby
- Year:
- 2011
Understanding gene flow, diversity, and dispersal patterns is important for predicting effects of natural events and anthropogenic activities on dolphin populations. With the very recent exceptions of false killer whales (Pseudorca crassidens), spinner dolphins (Stenella longirostris), and common bottlenose dolphins (Tursiops truncatus), Hawaiian odontocete species are managed as single stocks within the U.S. Hawaiian Exclusive Economic Zone. These exceptions are a result of recent studies that have indicated that some species have populations that show fidelity to individual islands or groups of islands, resulting in genetic differentiation, often with management implications. The first part of my study (following the introductory chapter) focused on population structure of pantropical spotted dolphins (Stenella attenuata) near the Hawaiian Islands. Because of the level of human interaction, pantropical spotted dolphin populations need to be defined accurately to be managed in a way that will avoid local population losses, especially given that the commercial and recreational troll fisheries near the islands "fish on dolphins" to catch tuna. I analyzed genetic samples for mtDNA and microsatellite loci from four island regions: Hawai'i, the 4-islands area, O'ahu, and Kaua'i/Ni'ihau. My results support genetic differentiation among the regions of Hawai'i, the 4-islands area, and O'ahu and suggest that pantropical spotted dolphins near Kaua'i/Ni'ihau are likely transient and in very low numbers. There was no strong evidence to support sex-biased dispersal or group fidelity. Possibly, differentiation is mediated by behavior adapted to differing habitat types. From a management perspective, spinner and bottlenose dolphin populations near the Hawaiian Islands have been split into separate stocks for management based on levels of genetic differentiation similar to those found for pantropical spotted dolphins. These precedents suggest that comparable action should be taken to split pantropical spotted dolphin stocks near the Hawaiian Islands. Most population studies rely heavily upon fixation indicies like FST to determine whether populations are genetically differentiated. When FST values are low but significantly different from zero, it can be difficult to interpret the biological significance of these values. As part of my study, I suggest that one way to evaluate whether small FST values indicate significant differentiation is to compare FST values with other populations considered to be separate based on factors such as extreme distance or morphological differences. I examined pantropical spotted dolphins from the coastal and offshore Eastern Tropical Pacificm (ETP), Hawaiian Islands, and China/Taiwan to examine the utility of comparing FST values across separate populations. Among Hawaiian Island regions, FST values are significantly different from zero but small. The comparison of these FST values with more distant populations in the ETP and China/Taiwan indicated that differences among Hawaiian Island regions were similar in magnitude to those found between the offshore and coastal ETP sub-species, but smaller than between the Hawaiian Island regions and the other regions examined. This suggests a level of reproductive isolation among the Hawaiian Islands regions that is comparable to that of offshore and coastal ETP populations, and supports the value of fixation index comparisons in evaluating differentiation among putative populations. My results suggest that assigning specific numerical baseline FST values may not always be biologically meaningful but that determining whether related populations with geographic or other separation show a preponderance of similar, lower, or higher fixation index values can help evaluate whether genetic differences among sympatric or parapatric groups warrants designating them as separate populations for management. Lastly, I explore whether the fast evolving mtDNA control region may be more suited to phylogenetic comparisons among the Stenella than slower evolving gene regions and whether the small number of haplotypes generally used in phylogenetic analyses is adequate for defining relationships among dolphins. Usually, slow evolving regions, such as gene regions, are used in phylogenetic analyses because species and genera have been isolated long enough for variation to have accumulated in such regions but not so long that many reversals (i.e. a mutational change in sequence that later changes back to the original sequence) have occured. The mtDNA control region is typically used for population genetic comparisons rather than phylogenetic comparisons because it is considered to be a fast evolving region. Historically, dolphin phylogeny has been examined using gene regions, which have resulted in ambiguous and unexpected relationships. However, the lack of variation in the mtDNA control region for pantropical spotted dolphin populations and the fact that recent studies have found that the mtDNA control region in cetaceans evolves at about one quarter the rate of other mammals, raises the question as to whether this region would be better suited to phylogenetic studies for the Stenella (and potentially other dolphin species). In comparing 346 haplotypes from five species of Stenella world-wide, I found that the mtDNA control region is probably not a good region to use for phylogenetic analyses, and that even faster evolving regions might perform better. The differences in the mtDNA control region were not sufficient to distinguish clear relationships among the Stenella. I also found that when subsets of haplotypes chosen at random were compared, the results differed among comparisons, suggesting that there is value in using more than the usual one or two haplotypes when making phylogentic comparisons. Given the recent increases in sequence availability (e.g. GenBank) and computing power, researchers should strongly consider using many haplotypes from a variety of populations in their phylogenetic comparisons.
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8618. [Article] Direct and indirect effects of livestock grazing intensity on processes regulating grassland bird populations
In grasslands, grazing by large ungulates can influence vegetation structure, composition, primary productivity, and ultimately, ecosystem functioning. While grazing represents a complex disturbance, grazing ...Citation Citation
- Title:
- Direct and indirect effects of livestock grazing intensity on processes regulating grassland bird populations
- Author:
- Johnson, Tracey N.
In grasslands, grazing by large ungulates can influence vegetation structure, composition, primary productivity, and ultimately, ecosystem functioning. While grazing represents a complex disturbance, grazing intensity largely determines the effects of grazing on vegetation. Structural and compositional changes in the plant community caused by grazing could have bottom-up effects on species and interactions at higher trophic levels. Thus, particular management strategies for domestic livestock in rangeland systems could exert a strong affect on grassland wildlife. Grassland-dependent songbirds may be particularly susceptible to the effects of domestic grazers because they depend on grassland vegetation for foraging and nesting. Domestic livestock may influence grassland-breeding bird populations by affecting settlement decisions, resource availability, or reproductive success. We investigated the effects of grazing intensity on grassland vegetation structure and songbird demography in a northwestern bunchgrass prairie using paddocks with experimentally-manipulated cattle stocking rates. We compared effects of four stocking rates (0, 14.4, 28.8, and 43.2 animal unit months) on songbirds using a randomized complete block design with four replicates of each stocking rate to address hypotheses regarding demography of grassland songbirds. Overall paddock-level vegetation structure decreased and structural heterogeneity of vegetation increased with higher stocking rates, and those effects carried over one-year post-grazing. However, most bird species were able to locate nesting sites with similar vegetation structure regardless of paddock-level effects of stocking rate. The exceptions were western meadowlarks and vesper sparrows; nests of these species in paddocks with higher stocking rates had less vegetative cover. Apparent nest density for grasshopper sparrows was negatively affected by higher stocking rates. Grazing treatment effects on songbird population density were restricted to negative effects of higher stocking rates on savannah sparrows, but this relationship was not observed until the post-treatment year. Songbird community composition differed between control and heavily-grazed paddocks, but diversity was not affected by stocking rate. Nest fates were evaluated to determine whether stocking rate influenced nest survival or cause-specific nest failure. Other variables such as vegetation structure and predator community, date, year, and nest age were included to help clarify which mechanisms might be responsible for differences in nest survival or failure rates among treatments. For our analysis, we introduce the use of a novel software package, McNestimate, to estimate the daily probability of nest survival and failure from specific causes. McNestimate estimates the probability of nest failure from competing causes when the exact dates of failure are unknown using a Markov Chain framework, and incorporates a model selection approach which allows the use of covariates to help identify variables important in explaining variation in the daily probability of nest failure. Nest predation rates increased with the age of the nest and throughout the breeding season, but were not affected by stocking rate. The probability of nest failure from adverse weather declined throughout the season, but the rate of decline depended on year. Nest failure rates due to trampling were higher in paddocks with higher stocking rates, but also depended on the number of days cattle were present during the nesting period. Patterns of overall probability of nest success were driven by predation patterns in the first year, but in the second year were strongly influenced by the chances of weather-related nest failure. Although starvation was not identified as a significant source of nest failure, grazing-induced changes to vegetation structure and composition could influence food availability for breeding songbirds, ultimately affecting the composition of nestling diets and nestling condition. To better understand the relationship between grazing intensity, nestling diet composition, and subsequent effects on nestling condition, we examined the invertebrate composition of nestling fecal samples. All species showed strong preferences for Lepidoptera (moths and butterflies) larvae, and partial preferences for Coleoptera (beetles) and Araneae (spiders). The proportion of preferred prey items was not affected by stocking rate. There were effects of bird species on the proportion of Araneae and Coleoptera and the proportion of Acrididae (short-horned grasshoppers) in the diet of western meadowlark nestlings decreased with high stocking rates. Growth rates for western meadowlarks and vesper sparrows were negatively affected by higher stocking rates. These results suggest that stocking rates can have variable effects on grassland songbird population and nest density depending on each species' habitat requirements. However, negative effects of high stocking rates on nest survival and nestling condition could have consequences for juvenile survival and recruitment. Overall, low-to-moderate stocking rates are likely compatible with many grassland bird species in northwest bunchgrass prairie, and although heavier livestock grazing may help create suitable vegetation structure for some songbird species, high stocking rates may influence grassland songbird diet quality, or have negative effects on nestling condition. We hypothesized that grazing intensity could influence the grassland songbird community through "bottom-up" effects on vegetation, but effects of grazing at different intensities did not translate directly through the food web to influence songbird populations as strongly as lower trophic levels. Processes responsible for changes in community composition such as immigration or emigration may not have had time to ensue during our short-term experiment; alternatively, sufficient spatial or temporal heterogeneity remained in the system, even at the highest grazing intensity, such that grazing-induced changes in lower trophic levels were irrelevant for most songbird species. Our results contribute to understanding grassland songbird demographic responses to different grazing intensities and identify specific mechanisms by which conservation measures for declining grassland bird populations can be improved.
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8619. [Article] The physiology ecology and run diversity of adult Pacific lamprey, Entosphenus tridentatus, during the freshwater spawning migration
Pacific lamprey, Entosphenus tridentatus, have shown recent and rapid declines in abundance. These anadromous fish return to streams where they mature, spawn and die. It has been inferred that Pacific ...Citation Citation
- Title:
- The physiology ecology and run diversity of adult Pacific lamprey, Entosphenus tridentatus, during the freshwater spawning migration
- Author:
- Clemens, Benjamin Jacob, 1976-
Pacific lamprey, Entosphenus tridentatus, have shown recent and rapid declines in abundance. These anadromous fish return to streams where they mature, spawn and die. It has been inferred that Pacific lamprey enter freshwater and reside for ~ 1 year before spawning. This long exposure to the freshwater environment may affect the plasticity of the maturation process and the migration timing of Pacific lamprey. Diversity in run times and body size has been observed for Pacific lamprey, yet it is unknown if this diversity is induced by the freshwater environment or if it is genetic. My first goal was to describe the maturation and migration characteristics of adult Pacific lamprey during their freshwater migration. My second goal was to use these data to make an estimation of the run diversity in Pacific lamprey. I conducted three complementary studies, in the laboratory and the field, to achieve these goals. I held immature adult lamprey (non-ripe fish that had ceased parasitic feeding in the ocean and had returned to freshwater) in the laboratory at temperatures that mimicked what these fish would experience in the wild, during the summer (mean: 21.8 °C), and another group of lamprey at cooler temperature (mean: 13.6 °C) to compare maturation timing and characteristics. The warm water group of lamprey showed significantly greater proportional decreases in body mass following temperature exposure than fish in the cooler water. All fish exposed to the warm water matured the following spring (8-10 months later) whereas only about half of the fish from the cool water exposure matured. To understand the migration distances and timing of adult Pacific lamprey, I tracked radio-tagged fish throughout the Willamette Basin above Willamette Falls, Oregon, by airplane and recorded their location. Fish migrated primarily during the spring to early summer period before stopping during the remainder of summer, when peak river temperatures (≥ 20°C) occurred. These fish tended to remain stationary through the fall and winter. However, at least a few fish continued to migrate upstream after September. I monitored maturation characteristics of adult Pacific lamprey, over time at Willamette Falls, Oregon and compared these fish with recent migrants collected from the Pacific Ocean as they entered freshwater. The results suggest a unimodal spawn timing between April and June, at water temperatures < 20 °C. Between July and mid-September, as water temperatures peaked at ~ 25 °C, relatively immature fish for both sexes prevailed. Warm summer temperatures coincided with an increase and prevalence of testicular atrophy in males, and I also observed a large die-off of lamprey during this time. The immature fish had maturation stages and phenotypic characteristics similar to recent migrants collected at the mouth of the Klamath River, suggesting that the immature fish at Willamette Falls would spawn the following year, and spawners in any given year may have been recent migrants during the previous year. However there is a temporal overlap in the spring of immature and mature fish, and I found evidence from gonad histology of maturing fish as they entered the river from the ocean, suggesting that a cohort is comprised of recent migrants that spawn within several weeks of entering freshwater, and another cohort is comprised of recent migrants that mature and spawn at least 1 year later. I hypothesize that the recent migrants that would likely spawn shortly after entering freshwater are akin to a winter or "ocean maturing" steelhead, Oncorhynchus mykiss, that optimizes feeding and growth in the open ocean for a few years before entering freshwater to spawn low in the river system shortly afterwards. Alternatively, these lamprey may be similar to coastal cutthroat trout, O. clarki clarki, that feed and grow in the coastal areas of the ocean for a few months before entering freshwater to spawn. There could be other less apparent explanations as well. I also hypothesize that the lamprey that would likely spawn within ~ 1 year of entering freshwater are akin to a "stream maturing" steelhead that foregoes feeding and growth opportunities, enters freshwater during the summer – fall, and accesses spawning grounds to spawn at temperatures that promote evolutionary fitness via successful spawning the following spring. Based on the results of my research, I hypothesize that warm summer temperatures (> 20 °C) can act as a strong selection factor against stream maturing Pacific lamprey in two ways. First, these temperatures may expedite their maturation, while at the same time slowing their migration. If these hypotheses are true, then I predict an uncoupling of spawn timing with optimal habitat characteristics, that would promote fitness, in the upper watershed. Second, summer temperatures may cause gonad atrophy and death prior to spawning. This scenario may select for ocean maturing Pacific lamprey.
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8620. [Article] Cruise ship disturbance to Kittlitz's murrelets (Brachyramphus brevirostris) in Glacier Bay National Park and Preserve, Alaska
The Kittlitz's murrelet (Brachyramphus brevirostris), a small pursuit-diving seabird in the family Alcidae, occurs across much of coastal Alaska and parts of the Russian Far East. Glacier Bay National ...Citation Citation
- Title:
- Cruise ship disturbance to Kittlitz's murrelets (Brachyramphus brevirostris) in Glacier Bay National Park and Preserve, Alaska
- Author:
- Marcella, Timothy K.
The Kittlitz's murrelet (Brachyramphus brevirostris), a small pursuit-diving seabird in the family Alcidae, occurs across much of coastal Alaska and parts of the Russian Far East. Glacier Bay National Park, located in Southeast Alaska, is believed to support approximately 37% of the worldwide breeding population of Kittlitz's murrelets during the summer months. Recent concern over apparent population declines in Alaska, coupled with the Park's dual mandate of resource preservation and visitation, led to this study. Cruise ships, although not the most numerous vessel type operating in Glacier Bay, have previously been identified as the vessel type eliciting the greatest disturbance response from Kittlitz's murrelets. During the murrelet breeding seasons in 2011 and 2012, my field assistants and I collected focal observations of 4,251 Brachyramphus murrelets from the bow of cruise ships traveling through Glacier Bay. Identification of murrelets to species was hampered by both the distance at which murrelets responded to the approaching ship and the type of response to the ship (diving vs. flushing). For roughly 40% of focal observations of murrelets from cruise ships, the species of murrelet (Kittlitz's murrelet or marbled murrelet [B. marmoratus]) could not be identified. Apparent habitat partitioning by the two murrelet species in Glacier Bay resulted in 79% of identified murrelets in the upper section of the Bay (Upper Bay) being Kittlitz's murrelets, while 83% of identified murrelets in the lower section of the Bay (Lower Bay) were marbled murrelets. In the Upper Bay, cruise ships are predicted to disturb 61% of all murrelets within 850 m on either side of the cruise ship's course (i.e., elicited a flushing or diving response), whereas in the Lower Bay, cruise ships are predicted to disturb 72% of murrelets within 850 m of the ship's course. Using Cox multistate models, I demonstrated that murrelets in the Upper Bay (predominantly Kittlitz's murrelets) were more likely to dive than flush in response to approaching cruise ships, whereas murrelets in the Lower Bay (predominantly marbled murrelets) were more likely to flush than dive. Also, murrelets in the Upper Bay responded to cruise ships by flushing or diving at shorter distances from the ship compared to murrelets in the Lower Bay. Murrelets in both areas of Glacier Bay generally reacted to cruise ships at greater distances when the ship approached indirectly, presumably because of the larger profile presented by a passing ship as opposed to a directly advancing ship. Absolute distance of the cruise ship from a focal murrelet was a strong predictor of murrelet disturbance response; no other management-relevant covariates that were measured during this study (e.g., ship velocity, distance to shore, whether a cruise ship had entered the Bay earlier that day) explained a significant proportion of the variation in murrelet response. Inferences based on data collected on-board cruise ships were limited to murrelet disturbance responses that occurred within 1 km of the ship. This was because of limits to the distance from the ship at which behavioral responses could be observed and the a priori assumption that disturbance to murrelets by cruise ships was unlikely at distances greater than 1 km. Results from shipboard observations indicated that some proportion of murrelets encountered at the farthest distance we could make inferences were on occasion disturbed (point estimate at 850 m perpendicular distance from ship's course = 15-30% probability of flushing or diving). This suggests that disturbance of murrelets by cruise ships in Glacier Bay exceeded expected distance thresholds. In order to investigate the effects of cruise ships on murrelet behavior at distances greater than 1 km, my assistants and I collected a total of 643 focal observations of Kittlitz's murrelets during 181 hours of observation from land-based observation sites in the Upper Bay during the 2012 field season. By combining these data with AIS and GPS ship tracks, I was able to append distance to the nearest cruise ship to each focal murrelet observation and search for patterns in murrelet behavior. By collecting data in this manner, I was able to avoid biasing the study based on pre-conceived notions of what constituted a threshold distance for cruise ships to disturb Kittlitz's murrelets. Using a segmented regression model within a logistic regression framework, I found that Kittlitz's murrelets exhibited a disturbance threshold (defined as an increased incidence of flushing from the water) by cruise ships at distances of at least 1.6 km, and perhaps as great as 6.0 km, with a best estimate of threshold disturbance distance at 3.8 km from a cruise ship. When cruise ships were greater than 3.8 km from focal Kittlitz's murrelets, the baseline probability of murrelets flushing during a focal observation period was 12.5%. When cruise ships were less than 3.8 km from focal Kittlitz's murrelets, the probability of flushing increased logistically with decreasing distance to an estimated 48% for the closest approach distances. The unexpectedly long distances at which murrelet behavior was affected by cruise ships in Glacier Bay is most likely attributable to social facilitation by other disturbed murrelets, because similar numbers of murrelets flushed when cruise ships were approaching (n = 30) as when they were receding (n = 27). Once a Kittlitz's murrelet flushed from the water, the subsequent duration of flight did not vary with distance to the nearest cruise ship. Instead, the duration of Kittlitz's murrelet flight was associated with time of day. The strong association between the proximity of cruise ships and the probability of a murrelet flushing, even at distances of several kilometers, demonstrates that Kittlitz's murrelets in Glacier Bay are susceptible to disturbance from cruise ships at distances greater than has previously been published for any seabird.
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8621. [Article] Evaluating the data-poor fishery stock assessment method, DB-SRA
Depletion-Based Stock Reduction Analysis (DB-SRA; Dick and MacCall, 2011) is a catch-only fisheries stock assessment model that has been developed to estimate an overfishing limit (OFL) in data-poor situations. ...Citation Citation
- Title:
- Evaluating the data-poor fishery stock assessment method, DB-SRA
- Author:
- Owashi, Brandon R.
Depletion-Based Stock Reduction Analysis (DB-SRA; Dick and MacCall, 2011) is a catch-only fisheries stock assessment model that has been developed to estimate an overfishing limit (OFL) in data-poor situations. DB-SRA projects the biomass trajectories of a stock by means of a catch time series and five parameters: the instantaneous, per annum, rate of natural mortality (M), age at 50% maturity, F[subscript MSY]/M, B[subscriptMSY]/B₀, and the predicted depletion of the stock from its unfished condition. F[subscriptMSY]/M is the rate of fishing mortality associated with the maximum sustainable yield (MSY) divided by the natural mortality rate, and B[subscriptMSY]/B₀ is the biomass level associated with the MSY divided by the unfished level of biomass. DB-SRA performs a Monte Carlo simulation where a large number of random parameter draws are made based on the input parameter’s prior distribution. Based on the catch time series, a biomass trajectory is produced to estimate a feasible set of input parameters and an OFL. The run and corresponding set of input parameters are not retained if the biomass trajectory goes below zero. In instances where the input parameter prior distributions are unknown, Dick and MacCall (2011) proposed a set of default values for two life history types (rockfish and flatfish). Although DB-SRA has been evaluated to some extent and is currently being used for management of data-poor species on the U.S. west coast, further evaluation is warranted. Like other fisheries assessment models, DB-SRA makes several assumptions that may have large influence on outputs and have largely gone untested. First, in essence DB-SRA assumes that only mature fish are caught in the fishery; this is rarely true on the U.S. West Coast and elsewhere, particularly for species with substantial recreational catch. Second, most stock assessment methods, including DB-SRA, are applied to large regions (e.g., U.S. west coast), assuming the population dynamics and fishing behavior remain consistent across the entire area. Market demands and habitat, among other factors, can lead to heterogeneity in population dynamics and fishing behavior. For instance, immature fish are often caught in recreational fisheries, but commercial fisheries tend to target larger fish, causing fishing impact to change across regions. I developed a two-region operating model that simulated data to generate input parameter expected values and a catch time series for each region, then conducted a factorial experiment to investigate the effect of four factors on DB-SRA (version 4) results: (1) different positions of the selectivity curve (the relative vulnerability to fishing of each age class) relative to the maturity curve; (2) spatial scale (separate by region versus combined); (3) exploitation history; and (4) life history type (rockfish and flatfish). The position of the selectivity curve influences the accuracy of the OFL estimates from DB-SRA, whereas the exploitation history has little effect. The OFL estimates are overestimated when the selectivity curve is to the right of the maturity curve and underestimated when the selectivity curve is to the left of the maturity curve. DB-SRA produces higher OFL estimates when two regions are used instead of one large region. Dividing the catch data into multiple regions resulted in higher OFL estimates than one combined region when the same input parameters and catch time series were used. An updated production function, for mimicking population dynamics, was implemented in DB-SRA (version 4), creating separate time lags for mortality and production (recruitment and growth). Instead of setting the time lags for mortality and production equal to the age at 50% maturity (version 3), the time lag for mortality has been changed to one year (version 4). Although the version 4 DB-SRA model has been used for fishery management, it has not been formally evaluated against version 3 to understand the impacts of this change on model results. To investigate the two versions, I looked at different positions of the selectivity curve relative to the maturity curve, different exploitation histories, and varying spatial scale for two life history types. The OFL estimates from version 3 of DB-SRA were larger than the OFL estimates from version 4, which is also evident in the biomass trajectories. The biomass trajectories from version 3 are always greater than the respective biomass trajectories from version 4. Although the OFL estimates from version 4 are not always less biased than those from version 3, the estimates from version 4 are always more precautionary and significantly reduce the chances for overestimating the OFL. The identification of factors that influence DB-SRA OFL estimates could demonstrate how DB-SRA can be adjusted to produce less biased OFL estimates in more situations. The change made in the production function between versions 3 and 4 of DB-SRA makes OFL estimates more precautionary; but does not always reduce the bias in the median OFL estimate. The results from this study could provide information to fisheries managers so that DB-SRA could be potentially improved and is applied in appropriate situations.
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8622. [Article] Effects of the invasive Pacific red lionfish Pterois volitans on native Atlantic coral-reef fish communities
Predatory lionfishes (Pterois volitans and P. miles) were introduced to Florida waters during the mid to late 1980s, and eventually established self-sustaining breeding populations in the tropical western ...Citation Citation
- Title:
- Effects of the invasive Pacific red lionfish Pterois volitans on native Atlantic coral-reef fish communities
- Author:
- Albins, Mark A.
Predatory lionfishes (Pterois volitans and P. miles) were introduced to Florida waters during the mid to late 1980s, and eventually established self-sustaining breeding populations in the tropical western Atlantic. These invasive species are now widespread along the southeastern seaboard of the United States, across the Caribbean Sea, and in the Gulf of Mexico. In these regions, lionfish reach larger maximum sizes and higher abundances than they do in their native Pacific, suggesting that they have undergone ecological release. Invaded marine communities have thus far provided little if any biotic resistance. Lionfish are generalist predators with high consumption rates, inhabit a broad range of habitats, are defended from predation by venomous spines, and are capable of long-range larval dispersal. It is possible that lionfish have direct effects on native communities, through consumption of native fishes and competition with native predators, as well as indirect effects, such as overconsumption of herbivorous fishes that prevent seaweeds from outcompeting reef-building corals. There is also serious concern that invasive lionfish could act additively, or even synergistically, with existing stressors of coral-reef systems, such as overfishing and ocean warming, resulting in substantial negative consequences for native ecosystems and economically valuable fisheries. The primary goal of this dissertation was to conduct a set of controlled, replicated field experiments to rigorously examine and measure the effects of lionfish on native reef-fish communities across a range of spatial and temporal scales. In the first experiment (Chapter 2), the net recruitment of native fishes to twenty small patch reefs was compared in the presence (n = 10) and absence (n = 10) of lionfish. This study demonstrated that lionfish reduced net recruitment, or change in abundance of small native fishes, by an average (± SEM) of 78.9 ± 32.2 % over 5 weeks, affecting 23 of 38 species recruiting to reefs in both treatments. In a second experiment (Chapter 4), I examined the effects of lionfish on patch-reef communities of small native fishes relative to, and in combination with, those of a similarly sized native predator, the coney grouper (Cephalopholis fulva). Four different predator treatments were established by transplanting predators (n = 5 reefs each). Treatments included a single small invasive lionfish, a single small native grouper, a grouper and a lionfish together, and predator-free controls. Compared to controls, invasive lionfish caused reductions (mean ± SEM) in abundance (93.7 ± 17.8 %) and species richness (4.6 ± 1.6 species) of small native fishes. The negative effect of lionfish on abundance was 2.6 ± 0.5 times stronger than that of the native grouper. The greatest negative effects on abundance, species richness, evenness, and diversity of native fishes occurred when both lionfish and native grouper were present. Additionally, lionfish grew more than six times faster in both length and mass than did native grouper. A third experiment (Chapter 6) assessed the effects of lionfish on native reef-fish communities at spatial and temporal scales directly relevant to management and conservation efforts. Subsequent to baseline surveys, high- and low-density lionfish treatments were established on 10 large (1400 to 4000 m²) isolated coral reefs. After initiation of treatments, quarterly surveys of the native reef-fish communities were conducted for approximately 14 months. Lionfish caused significant reductions (mean ± SEM) in density (up to 3.22 ± 0.95 fish m⁻²), biomass (3.26 ± 1.10 g m⁻²), and species richness (4.92 ± 2.09 species) of small (<10 cm TL) native fishes. However, these negative effects on prey-sized fishes had not yet translated into declines in larger size classes during the first 14 months of this experiment. In addition to field experiments, this dissertation describes field and aquarium observations of a previously undocumented piscivorous behavior by invasive lionfish - blowing jets of water at prey fish - which may confer a high degree of predation efficiency, thus contributing to the dramatic success of the invasion (Chapter 5). Also provided is a review of the current state of knowledge about the lionfish invasion, with speculation on the long-term effects of the invasion on coral-reef communities, and a brief discussion of potential mitigation measures (Chapter 3). In sum, this research demonstrated that invasive lionfish have substantial negative effects on native communities of coral-reef fishes. In all cases, numerical reductions in small (prey-sized) native fishes caused by lionfish were substantial. Additionally, lionfish caused considerable reductions in native reef-fish species richness (via predation on rare species). These findings indicate that the lionfish invasion may have long-term, broad-scale impacts on the structure and function of coral-reef communities as a whole, potentially reducing the resilience of these systems to a myriad of existing stressors as well as their capacity to provide valuable ecosystem goods and services to humans.
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8623. [Article] Complexity of food web interactions in a large mammal system
Food webs consist of a combination of bottom-up (resource-driven) and top-down (predator-driven) effects. The strength of these effects depends on the context in which they occur. I investigated food web ...Citation Citation
- Title:
- Complexity of food web interactions in a large mammal system
- Author:
- Eisenberg, Cristina
Food webs consist of a combination of bottom-up (resource-driven) and top-down (predator-driven) effects. The strength of these effects depends on the context in which they occur. I investigated food web (trophic) relationships between wolf (Canis lupus) predation, elk (Cervus elaphus) herbivory, aspen (Populus tremuloides Michaux) recruitment, and fire. The study setting, in the central portion of the Crown of the Continent Ecosystem, spans the US/Canada border and encompasses Glacier National Park (GNP), Montana and Waterton Lakes National Park (WLNP), Alberta. I stratified my observations across three spatially distinct areas, the North Fork Valley, in the western portion of GNP; the Waterton Valley, in the eastern portion of WLNP; and the Saint Mary Valley, in the eastern portion of GNP. All valleys are elk winter range (low-lying grasslands with patches of aspen). The valleys have three different observed wolf population levels (Saint Mary: low; Waterton: moderate; North Fork: high), which represent three levels of long-term predation risk (the probability of an elk encountering a wolf). Ecological characteristics (e.g., climate, soils, elevation, plant associations) are comparable among valleys. Fire has occurred in 90% of the North Fork. My objective was to examine the relative influence of bottom-up (fire) and top-down (predation risk) factors and the context-dependence of these relationships via data gathered during a three-year time span. I found complex elk responses to bottom-up and top-down factors that could influence habitat use by elk. Pellet transect data demonstrated that elk exhibited the same risk reduction behavior at all wolf population levels, even at very low levels. Predation risk variables that provided impediments to detecting or escaping wolves had a similar and negative influence on occurrence of elk (pellet piles), regardless of wolf population density. Fire had a negative effect on elk density and a positive effect on wolf density (per scat piles) in aspen communities where a high wolf population existed. Aspen cover, which may be riskier than open grassland, also had a negative effect on elk density, except at very high wolf levels without fire. The risk of wolf predation alone did not drive elk behavior. Conversely, focal animal (elk vigilance behavior) data suggested a positive relationship between wolf population and elk vigilance. However, when I deconstructed vigilance, elk demonstrated complex, context-dependent adaptive behavior in response to the long-term risk of predation by wolves. Commonly identified drivers of elk vigilance (group size, impediments to wolf detection and escape) appeared to be important drivers at an intermediate level of long-term predation risk (e.g., Waterton). These drivers ceased to function in this manner when the long-term predation risk level increased (The North Fork). At high levels of long-term predation risk, vigilance was high, but not driven by these common factors. In some cases, the relationship between vigilance and risk factors was reversed (e.g., group size). And at a low level of long-term predation risk (Saint Mary), elk did not respond to these drivers of vigilance. When I measured aspen demography (browse, recruitment), browse was lower in the North Fork, where there was a high wolf population, suggesting a top-down effect. However, I found low aspen recruitment in the absence of fire in all valleys, which indicates a bottom-up effect in that aspen is highly fire-dependent. Top-down predictors of aspen recruitment (e.g., plot position and stand size, which are related to predation risk) had no effect on browse levels regardless of wolf population level. In sum, the risk of wolf predation alone did not drive the food web relationships I observed. Bottom-up and top-down forces worked together in valleys that contained well-established wolf populations, and to a lesser degree in a valley with a low wolf population. Commonly used measures of predation risk responses (e.g., vigilance) reversed their relationship as the wolf population increased. Low aspen recruitment in the absence of fire demonstrates the importance of bottom-up effects. Bottom-up and top-down effects may be important joint engineers of aspen communities. My findings invite deeper inquiry into the interaction between bottom-up and top-down effects in large mammal systems.
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8624. [Article] A UK perspective on marine renewable energy environmental research: Keeping up with a ‘Deploy & Monitor’ philosophy
There are many drivers for the pursuit of renewable energy extraction from coastal seas. In the United Kingdom these include moving away from fossil fuels to mitigate the impacts of climate change, improving ...Citation Citation
- Title:
- A UK perspective on marine renewable energy environmental research: Keeping up with a ‘Deploy & Monitor’ philosophy
- Author:
- Wilson, Ben
There are many drivers for the pursuit of renewable energy extraction from coastal seas. In the United Kingdom these include moving away from fossil fuels to mitigate the impacts of climate change, improving energy security by diversifying supply options, increasing wealth generation in outlying coastal communities, and seeking alternative sources of power as existing infrastructure (power stations) near the end of their useful lives. In Scotland these drivers are particularly strong because of the additional factors of decline of North Sea oil reserves; the political pressure not to re-develop nuclear power plants; and the abundant offshore wind, wave and tidal-stream resources. While these drivers are strong, and backed up by ambitious political targets, a variety of constraints currently limit development of a vibrant marine renewables sector in UK coastal waters. In addition to financial, technological and logistical issues, a diversity of environmental restrictions limitprogress of the renewables sector. Many of these environmental issues actually stem from a lack of basic knowledge of how marine renewable energy devices are likely to interact with the receiving environment and vulnerable species (particularly those protected by European legislation such as the Habitats and Species as well as the Birds Directives). Furthermore where negative interactions are known, there may be limited knowledge about, or options for, mitigating these impacts. Strictly applying precautionary principals to these new and diverse technologies with respect to their potential local negative environmental impacts threatens to halt development of these technologies despite their potential benefits for global climate and other environmental issues. This problem applies particularly to wave and tidal-stream technologies which are diverse, new, and without track-record. To overcome this issue, the Scottish government is implementing a staged introduction of these technologies under what has been termed a “Survey-Deploy-&-Monitor” policy. That is, commercial scale devices are being placed singly or in small arrays (< 10 MW) into areas of pre-determined and acceptable environmental sensitivity and then impacts are being quantified through a monitoring program. In parallel to this approach, The Crown Estate (the seabed owner) has performed a series of licensing rounds to lease preferred sites to specific wind, wave and tidal-stream developers. If consented, these sites will represent commercial-scale developments of all three technologies in Scottish and wider UK waters. Part of that consenting progress requires that developers provide evidence (through Environmental Impact Studies and the production of Environmental Statements) that their developments will not harm the surrounding environment. It is these consenting exercises and related fundamental questions about impacts that are currently driving most of the environmental research related to offshore wind and marine renewable technologies in the UK. Research tends to fall into three divisions based on the source of funding and the geographic scope of the issues. At the smallest scale are studies of individual sites of interest to individual developers seeking consents for a specific technology. More generic studies funded by government or industry consortia may be performed to understand environmental issues surrounding a particular group of technologies, installation methods, or operational parameters. In this case, the actual site may be less important. Finally, fundamental research (funded by Research Councils) may be carried out to understand how and why animals use renewable energy relevant sites. Because there are a large number of research studies currently underway at a wide range of scales, sites, and taxa in Scotland and the wider UK, it is not possible to summarize them all in this short talk. Instead, I will outline examples of the three broad areas of environmental research (site/device specific, technology generic and more basic ecology). These examples have also been chosen because they represent an ongoing project, a recently established group of research studies, and a potential new research program. Some of the perhaps less intuitive lessons that have arisen from some of such projects include : 1. The responses of organisms may not be tied to particular brands of device or energy extraction, whether wind, wave, tidal-stream or even oil platform. For fouling organisms the particulars of the substrate might be the important factor rather than the device’s method of energy extraction. Likewise for fish it may be the device complexity and position in the water column that is key to their interactions. 2. Conversely, particular, seemingly unimportant features of devices may have relevance to marine organisms. For example, the color of a turbine may be extremely important for animals maneuvering around the rotors, a duct or the pile. 3. Test centers used to assess full-scale devices may seem like excellent places to also perform environmental research; however care must be taken as the devices in test centers are typically early generation prototypes and may be swapped out frequently. Furthermore activities by other companies at neighboring berths may invalidate site or device specific experiments. 4. Inter-annual variability does not suit the current pace of marine renewables development and careful consideration of the use of control sites and BACI designs should be made. 5. Cumulative impacts of multiple renewable and other developments offer a massive challenge to determining environmental impact. This difficulty represents a significant area of uncertainty for developers seeking consent and may encourage a development race with companies not wanting to have to consider their development relative to all of the others that preceded them. 6. Finally, while much effort is currently being devoted to gathering sufficient data to permit consent and early stage deployments, the significant investments only come when developers set up arrays capable of producing commercially relevant power. At this point there may be a step change in the degree of monitoring required of any potential environmental interactions. Should intolerable impacts be found, then mitigation will be urgently required or an exit strategy implemented.
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8625. [Article] Forestry
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8626. [Article] Forestry
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8627. [Article] Plant selection, irrigation requirements and stormwater management of Pacific Northwest extensive green roofs
An alternative to traditional roofing, extensive green roofs are contained ecosystems consisting of a drainage layer, a thin media profile which is planted with hardy plant species. Extensive green roof ...Citation Citation
- Title:
- Plant selection, irrigation requirements and stormwater management of Pacific Northwest extensive green roofs
- Author:
- Shroll, Erin
An alternative to traditional roofing, extensive green roofs are contained ecosystems consisting of a drainage layer, a thin media profile which is planted with hardy plant species. Extensive green roof plants must maintain multiple functions while growing in a highly aggregate media at a depth of equal to or less than 15.25 cm. The shallow media depth weighs less and can often be used when retrofitting an existing building with a green roof. Maximizing functions such as stormwater mitigation requires designing for the purpose of the green roof goal and for the maintenance plan that will ensure plant health in extreme environments. However, our understanding of these complex and dynamic ecosystems on rooftops is still very limited and management of green roofs is often an afterthought, rarely taking into account regional differences in climate. The establishment period of an extensive green roof is a critical time to promote plant coverage, which often requires irrigation during dry periods. The Pacific Northwest (PNW) climate is challenging for green roof management because plants experience cool wet conditions for much of the year yet must survive warm, nearly rainless summers. However, extensive green roof maintenance is generally minimal unless aesthetics are the primary goal. Maintenance in the second year and the years following includes irrigation during dry periods to keep plants healthy or to enhance green roof function. The removal of competitive weeds and tree seedlings is also recommended throughout the life of the green roof. Extensive green roofs are increasingly being used to help improve stormwater management. The vegetative portion of an extensive green roof design is often steered by the structural load that a building can hold along with availability of local products and materials such as media and plants. A lightweight, high aggregate media planted with Sedum species and other succulents is often selected as these components have been successful and work well together. However, with the drive to increase the functional role of extensive green roofs, media and plant selection must be further investigated to fully understand how we can optimize green roof efficiency—in our case, stormwater management efficiency, the most requested function of commercial green roofs. In this study green roof plants were provided adequate irrigation in the first summer and throughout establishment. At the start of the second summer, we tested how the eight taxa performed under three different management regimes in the PNW: (i) non-irrigated, ii) irrigated in compliance with Portland, Oregon's floor area ratio (FAR) bonus requirement and iii) according to out horticultural decision resulting in the highest watering regime. We also measured weed pressure across the irrigation treatments. We selected plant taxa based on their potential functional attributes (habitat quality, aesthetic quality, stormwater management proficiency) as well as their availability through the regional nursery trade. Plants selected were Camassia quamash, Cistus creticus ssp creticus 'Lasithi', Delosperma cooperi, Eriophyllum lanatum var lanatum, Festuca idahoensis var roemeri, Iris chrysophylla, Sedum spathulifolium 'Cape Blanco' and Sisyrinchium idahoense. Within selected seasons the mean relative growth rate (MRGR) of each plant was analyzed and survivorship was recorded throughout this study. Throughout the first year of establishment, all plants grew and survival was high. Exceptions were that I. chrysophylla declined in mean relative growth rate (MRGR) and D. cooperi had a twenty five percent loss in survival during a cold winter spell. Plant growth and overall plant performance varied considerably among taxa throughout establishment and across the summer irrigation treatments. Weed pressure also varied across treatments. The highest watering regime provided the greatest plant survivorship and plants generally had a positive increase in MRGR. Exceptions were F. idahoensis var roemeri, which decreased in MRGR and S. spathulifolium 'Cape Blanco' which did not change in size. The irrigation regime compliant with the City of Portland provided increased plant survivorship over the non-irrigated regime, yet plant aesthetics were less for the same species compared to the highest watering regime. Plant survivorship in the non-irrigated regime included succulents, D. cooperi and S. spathulifolium 'Cape Blanco', and the summer-dormant bulb, C. quamash. Plant aesthetics within each irrigation regime varied considerably and mean aesthetic ratings declined as the summer season progressed. These results suggest that tailoring green roof management more precisely to plant choices and the regional environment will improve function and reduce overall costs. Maintenance costs are less (water costs and weeding labor) with a non-irrigated green roof however, plant aesthetics are compromised when plants experience three to five days without water. Overall the collected runoff from rainfall throughout this study, planted green roofs retained 45% of roof runoff verses 40.5 % retained by media only roofs (p< 0.001). Of the significantly different comparisons (α = 0.05), the vegetated plots had a higher mean retention of runoff over media only roofs nine times out of ten. Green roof runoff retention varied considerably throughout the collection period depending on season, rainfall amounts and saturation of media. Climatic variations and increased plant growth may explain these varying results of stormwater runoff retention of the green roofs. Results from this study suggest that we need to explicitly design green roofs to maximize the ecological goal, which in the case of this research is to mimic nature and allow for rainwater infiltration, retaining a percentage of runoff and detaining the rest so that it enters into stormwater systems at a manageable speed after the peak of the storm. The vegetative layer plays an important role in mitigating stormwater runoff; proper design influenced by regional climate, rooftop microclimates and plant needs as well as the subsequent maintenance regimes will optimize the intended green roof function while providing a suite of additional benefits.
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This document is the 1998 annual progress report for studies of Pacific lampreys (Lampetra tridentata) conducted by the Confederated Tribes of the Umatilla Indian Reservation (CTUIR), Columbia River Inter-Tribal ...
Citation Citation
- Title:
- Pacific lamprey research and restoration project : annual report 1998
- Author:
- Close, David A.
This document is the 1998 annual progress report for studies of Pacific lampreys (Lampetra tridentata) conducted by the Confederated Tribes of the Umatilla Indian Reservation (CTUIR), Columbia River Inter-Tribal Fish Commission, and University of Minnesota (U of M). Bonneville Power Administration (BPA) funded activities through Project 94-026. The Pacific Lamprey Research and Restoration Project began after completion of a status report of Pacific lamprey in the Columbia River in 1995. The project started as a cooperative effort between the Confederated Tribes of the Umatilla Indian Reservation (CTUIR), Columbia River Inter-Tribal Fish Commission (CRITFC), and Oregon State University (OSU). Lamprey are a valuable subsistence food and cultural resource for Native Americans of the Pacific Northwest. The once abundant Pacific lampreys above Bonneville Dam are currently depressed (Close et al. 1995). Declines in Pacific lampreys have impacted treaty secured fishing opportunities by limiting tribal members catch and access to Pacific lampreys in the interior Columbia basin. Tribal members now harvest lampreys in lower Columbia River locations such as Willamette Falls near Oregon City, Oregon. Pacific lampreys are also an important part of the food web of North Pacific ecosystems, both as predator (Beamish 1980; Pike 1951; Roos and Gillohousin 1973), and prey (Semekula and Larkin 1968; Galbreath 1979; Roffe and Mate 1984; Merrell 1959; Wolf and Jones 1989) and as a vehicle for recruitment of marine nutrients. The decline of Pacific lampreys in the interior Columbia River basin has become a major concern. Effective recovery measures for Pacific lampreys can only be developed after we increase our knowledge of the biology and factors that are limiting the various life history stages. Prior to developing a restoration plan, we have carried out studies to review status, distribution, abundance, homing ability, and stock structure. These studies will culminate in the development and implementation of a restoration plan for the Umatilla River. Multiple pass electrofishing surveys to assess densities and distribution of lamprey larvae in the Umatilla River were conducted in 1998. Electrofishing surveys in the Umatilla River are useful for baseline comparison. Forty-two index sites were sampled from the mouth to river kilometer (RK) 124. Lamprey larvae were found in 4 of the 42 index plots. All sites with larvae were found at and below RK 9.3. Nine larvae were captured during the surveys. However, no larvae were caught on the second pass in each plot. Pacific lamprey larvae and adult lampreys were studied to determine their ability to produce and detect pheromones. Larval gall bladders were removed and gall bladder fluid was extracted and analyzed by high performance liquid chromatography (HPLC). Adult lampreys ability to detect pheromones were tested using electro-olfactogram (EOG) methods. Fifteen compounds including Petromyzonol sulfate (PS), a migratory pheromone found in sea lamprey larvae (Petromyzon marinus) (Li et al. 1995) were tested. Larval lampreys produced large amounts of (PS). Adult Pacific lamprey can detect PS and have an olfactory sensitivity to pheromones that is similar to sea lampreys. iv Pacific lamprey abundance, as indexed by fish ladder counts in 1998, was; Bonneville 37,478; The Dalles 7,665; John Day 12,579; McNary 3,393; Ice Harbor 763; Lower Monumental 69; Little Goose 90; Lower Granite 110; Rock Island 1,410; and Rock Reach 819 dams, respectively. Enumerating Pacific lamprey at counting stations remained extremely problematic, since excessive up- and downstream movement at the counting windows reduces the confidence in fish ladder passage estimates. This may be an indication of passage problems encountered by Pacific lampreys. In-season homing of Pacific lamprey was studied using radio telemetry. Pacific lampery were captured at Willamette Falls and Bonneville Dam, outfitted with radio transmitters and released approximately 26 km downstream of the Willamette River confluence. A total of 50 fish were instrumented. Results will be presented in next year’s report. Natal homing was also investigated using mtDNA analysis of fish captured at Bonneville Dam and from Willamette Falls. These results will also be presented next year. We collected lamprey tissues, from fish captured in several locations throughout the Columbia River Basin, to develop a genetic database for use in determining population structure. Additional samples for populations outside the Columbia River Basin were used to scale the results. Results from this investigation will be presented in next year’s annual report. Since the initiation of the CTUIR lamprey research and restoration project, additional lamprey studies have been proposed that have created uncertainties regarding the prioritization of projects and needs of lampreys. At the request of the Northwest Power Planning Council, a multi-agency Pacific lamprey technical workgroup (TWG) was established in 1996. Annual meetings are held to coordinate projects and prioritize research needs. The TWG identified critical uncertainties and needs to help in determining priorities of ongoing and proposed projects (Appendix A). Finally, an annotated bibliography of relevant lamprey literature was compiled (Appendix B).
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Ecology of shortnose and Lost River suckers in Tule Lake National Wildlife Refuge, California, Progress Report, April - November 1999 Lisa A. Hicks, U. S. Fish and Wildlife Service, Klamath Basin National ...
Citation Citation
- Title:
- Ecology of shortnose and Lost River suckers in Tule Lake National Wildlife Refuge, California : progress report, April - November 1999
- Author:
- Hicks, Lisa A.; Mauser, David M.; Beckstrand, John; Thomson, Dani
- Year:
- 2000, 2005
Ecology of shortnose and Lost River suckers in Tule Lake National Wildlife Refuge, California, Progress Report, April - November 1999 Lisa A. Hicks, U. S. Fish and Wildlife Service, Klamath Basin National Wildlife Refuge, Route 1, Box 74, Tulelake, CA 96134 David M. Mauser, U. S. Fish and Wildlife Service, Klamath Basin National Wildlife Refuge, Route 1, Box 74, Tulelake, CA 96134 John Beckstrand, U. S. Fish and Wildlife Service, Klamath Basin National Wildlife Refuge, Route 1, Box 74, Tulelake, CA 96134 Dani Thomson, U. S. Fish and Wildlife Service, Klamath Basin National Wildlife Refuge, Route 1, Box 74, Tulelake, CA 96134 Introduction The Lost River ( Deltistes luxatus) and shortnose ( Chasmistes brevirostris) suckers were federally listed as endangered species on July 18, 1988 ( Federal Register 53: 27130- 27134). Both sucker species are relatively long- lived, have a limited geographic range, and are endemic to the Upper Klamath Basin of Northern California and Southern Oregon. Habitat degradation from water diversions and loss of riparian and wetlands habitats associated with agricultural development within their historic range is believed to be the major reason for the species decline ( U. S. Fish and Wildlife Service 1993). A more detailed description on the life history, habitat requirements, and causes of decline of the species can be found in the Lost River and Shortnose Sucker Recovery Plan ( U. S. Fish and Wildlife Service 1993). Tule Lake National Wildlife Refuge ( NWR), established in 1928, consists of 2 return flow sumps ( Sump 1( A) and 1( B)) totaling 13,000 acres surrounded by 17,000 acres of intensively farmed lands ( Fig. 1). The refuge and surrounding private agricultural lands occupy the historic lake bed of Tule Lake, a 95,000 acre lake and marsh area that was reclaimed in the early 1900fs as part of the Klamath Reclamation Project. Current management of the refuge is directed by the Kuchel Act of 1964 which mandates the refuge be managed for the major purpose of waterfowl management but with optimal agricultural use that is consistent therewith. Both sumps are shallow ( 0.1 - 2.0 m) and consist of approximately 10,500 acres of open water with a 2,500 acre shallow (< 0.1 m) emergent marsh at the northeast corner of Sump 1( A). Tule Lake has been identified as a potential refugia for both sucker species ( U. S. Fish and Wildlife Service 1993). Tule T like National Wildlife Sump 3 Lease lands Field . Station Cocbetative Fanning Fields Area J Lease Lands Sump 2 I ease I , ands Figure 1. Tule Lake National Wildlife Refuge, California. During winter, water within the sumps is comprised primarily of local runoff and during summer water is comprised primarily of irrigation return flows, originating from Upper Klamath Lake. Summer water quality in the sumps is similar to other water bodies within the Upper Klamath Basin and is considered hypereutrophic ( Dileanis et al. 1996). Water quality problems include low dissolved oxygen ( DO) and high hydrogen ion concentrations ( pH) and unionized ammonia. Water quality in the Tule Lake sumps is directly affected by hypereutrophic conditions in Upper Klamath Lake ( U. S. Fish and Wildlife Service 1993). Studies conducted after publication of the Shortnose and Lost River Sucker Recovery Plan indicate that Tule Lake contains an estimated 159 ( 95% CI = 48- 289) shortnose and 105 ( 95% CI = 25- 175) Lost River suckers ( Scoppetone and Buettner 1995). Confidence intervals for these estimates are large because of small sample sizes and low rates of recapture. Recruitment rates for the Tule Lake population via spawning below Anderson- Rose Dam is low with significant larval production occurring only in 1995 ( monitoring occurred 1991- 99) ( M. Buettner, pers. comm). Entrainment from the irrigation system is likely the largest source offish for Tule Lake ( U. S. Bureau of Reclamation 1998). Both species of suckers in Tule lake are in good physical condition relative to fish in Clear Lake and Upper Klamath Lake with Tule Lake fish being generally heavier and exhibiting few if any problems with parasites or lamprey. ( Scoppetone and Buettner 1995). U. S. Bureau of Reclamation ( Reclamation) biologists tracked 10 radio- marked suckers in Tule Lake from 1993- 95. From these studies, specific use areas by time period were identified with over 99% of radio locations occurring in Sump 1( A). Of particular importance from these studies was identification of an over- summer site in the south central region of Sump 1( A) termed the ADonut Hole# ( DH). In early 1999, the U. S. Fish and Wildlife Service ( Service) proposed a wetland enhancement project on the 3,500 acre Sump 1( B). The project was designed to improve habitat for waterfowl and other associated wetland species as well as improve water quality through the conversion of Sump 1( B) from an open body of shallow water to an emergent year- round flooded wetland. The primary mechanism to create the desired habitat condition is a series of annual spring/ summer drawdowns thereby creating conditions suitable for germination of desired emergent plant species. Of principal concern in developing the project was the potential effects on suckers within the sumps. Because of the proximity of both sucker species in adjacent Sump 1( A), a project monitoring plan was developed to ascertain the potential effects of the Sump 1( B) Project on suckers and water quality. Our monitoring design benefitted from studies of water quality and sucker movements by Reclamation biologists from 1992- 95. This report summarizes findings of the first year= s pre- project monitoring effort ( April- December, 1999) relative to water quality and movements of radio- marked suckers. Objectives 1. Describe seasonal distribution and movement patterns of both sucker species in Tule Lake NWR and determine if fish movements have changed since initial studies by Reclamation biologists in 1993- 95. 2. Characterize water quality, in space and time, of areas used by adult suckers compared to areas which are not used. 3. Document and describe movements of radio- marked suckers to spawning areas below Anderson- Rose dam. 4. Determine whether recruitment of larvae and juvenile was occurring below Anderson- Rose Dam. Methods Monitoring radio- marked adult suckers In April and May, 1999, Reclamation biologists captured 14 suckers and surgically implanted radio- transmitters ( ATS, Isanti, MN) having a projected battery life of 12 months. Each transmitter had an external antennae that exited the body cavity near the lateral line of the fish. Eleven Lost River and 3 shortnose suckers were captured using trammel nets at the northwest corner of Sump 1( A) ( 9 fish) and immediately downstream of Anderson- Rose Dam on the Lost River ( 5 fish) ( Table 1). We located radio- marked fish via air thrust boats using a scanning receiver and 4- element yagi antennae. Fish were located fish 4 times/ month during March and April, 2 times/ month from May through September, and once per month from October through December. Fish not located via boat were located from fixed wing aircraft. We determined fish locations by moving as close as possible to undisturbed fish and recording locations with a Global Positioning System ( GPS). All GPS positions consisted of 180 rover points/ location and were differentially corrected via post processing software ( PFinder ver. 2.11). We recorded depth information at each fish location. To determine timing and duration of the spawning migration, we monitored radio-marked fish from vehicles on the east levee of the Lost River downstream of Anderson- Rose Dam. Table 1. Data from Lost River and shortnose suckers captured on Tule Lake National Wildlife Refuge, California and Anderson- Rose Dam, Oregon in 1999. RADIO TAG 165.043 165.063 165.073 165.103 165.084 165.094 164.641 164.863 164.494 164.854 165.054 164.845 164.763 164.914 CAPTURE DATE 4/ 2/ 99 4/ 2/ 99 4/ 2/ 99 4/ 2/ 99 4/ 2/ 99 4/ 2/ 99 4/ 9/ 99 4/ 2/ 99 4/ 9/ 99 4/ 30/ 99 5/ 5/ 99 5/ 5/ 99 5/ 18/ 99 5/ 18/ 99 CAPTURE LOCATION TULELAKE SUMP1A TULELAKE SUMP 1A TULELAKE SUMP 1A TULELAKE SUMP 1A TULELAKE SUMP1A TULELAKE SUMP 1A TULELAKE SUMP1A TULELAKE SUMP1A TULELAKE SUMP 1A ANDERSON ROSE DAM ANDERSON ROSE DAM ANDERSON ROSE DAM ANDERSON ROSE DAM ANDERSON ROSE DAM SPECIES LOST RIVER LOST RIVER LOST RIVER SHORTNOSE SHORTNOSE LOST RIVER SHORTNOSE LOST RIVER LOST RIVER LOST RIVER LOST RIVER LOST RIVER LOST RIVER LOST RIVER SEX FEMALE FEMALE FEMALE MALE FEMALE FEMALE FEMALE MALE FEMALE FEMALE MALE MALE MALE FEMALE WEIGHT NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA 2830 g 1040 g 5260 g NO DATA 2214 g 1542g 2350 g 1811 g FORK LENGTH 777 mm 681 mm 754 mm 473 mm 523 mm 754 mm 544 mm 440 mm 775 mm 753 mm 556 mm 486 mm 594 mm 477 mm PIT TAG NO. 1F3E34432C 1F39064959 1F4C5A6754 1F07315752 1F31462743 1F4C5A6754 1F3726750F 1F36490062 1F37103466 1F390F1801 1F3E2A7702 1F36443235 1F30753309 1F390E6B2F Recruitment Reclamation biologists conducted larval and juvenile sucker surveys during May and June by sampling, visually and with dip nets, the emergent vegetation at the periphery of the Lost River downstream of Anderson- Rose Dam. Egg viability surveys were conducted in the gravel sediments immediately below the dam in May. Water quality We preselected water quality sampling sites ( Fig. 2, Table 2) in Sump 1( A) to correspond to adult sucker use areas as determined by studies of radio- marked adult suckers conducted by Reclamation in 1993- 95 ( Fig. 3). We selected 2 sites in Sump 1( B) which met or exceeded the minimum depth requirement (> 3ft) for both sucker species ( M. Buettner, pers. comm.) after referring to 1986 bathymetric maps. We attempted to obtain data from each site twice/ month. We moved 2 sample sites ( Donut Hole and Donut Hole Northwest) early in the summer and 1 site ( Donut Hole West) ( Fig. 2) during mid- summer to better represent summer use locations of radio- marked fish. From May through November, we measured water quality parameters ( dissolved oxygen ( DO), hydrogen ion concentration ( pH), and temperature (° C)) using DataSonde 3, 4 and 4a= s ( Hydrolab Corp., Austin, Texas) ( hereafter referred to as Hydrolabs) 26 cm ( 12 in) above the sediment. We suspended Hydrolabs, within PVC tubes, from metal fence posts driven into the sediment. Data were collected hourly over a 96 hr period at each monitoring site. We downloaded data from Hydrolabs using the Hyperterminal software package v. 690170 to a personal computer. Unit probes were cleaned and calibrated according to Hydrolab guidelines ( Hydrolab Corporation 1997) and local geographic standards. Using the same deployment schedule as with our Hydrolabs, we sampled turbidity at each site using a Portable Turbidimeter model 21 OOP ( Hach Corp., P. O. Box 389, Loveland, CO 80539). We collected water samples 27 cm ( 12 in) above the sediment at each sample site. We measured turbidity in NTUs, following the guidelines in the product manual and we measured water depth using a hand- crafted wooden pole, marked in measured increments. We summarized water quality data using Microsoft 8 EXCEL software v. 97 SR- 1 and SPSS for Windows release 9.0.0. Because of the apparent difference in summer water quality in the DH versus other sampling sites, data were summarized as DH sites and Non- DH ( NDH) sites. Tule Lake NWR Water Quality Monitoring 1999 MfSVTHOLE \ OKTIIH ' w Background Hvdrolon> Luke m Mudflats Uplands X Water Vionitonny Stations ( Hydrolafa sites) MK ker Radio \ ckmcin L. Hicks. D. .1 Beckitraod, K Miller, USFWS Background HydfOlOf} Sat'I Wetlands Invcnlon LSI Sh S Map Projection UTMZCM IO, WGS-* 4 By: L. Hkks. USFWSUSBR 02/ 00 i Figure 2. Water quality sample sites, Tule Lake National Wildlife Refuge, California, 1999. 8 Table 2. Characteristics of water quality sampling sites, Tule Lake National Wildlife Refuge, Tulelake, California, 1999. SITE NAME NORTHWEST SUMP 1A DONUT HOLE NORTHWEST DONUT HOLE WEST DONUT HOLE SOUTH DONUT HOLE DONUT HOLE EAST ENGLISH CHANNEL WEST SUMP IB EAST SUMP IB PUMP 10 SUMP 1A2 SITE ABBREVIATION NWS1A DHNWSlAor DHNW DHWEST DHSOUTH DHSlAorDH DHEAST ECSlAorEC WS1B ES1B PMP10 UTM N 4642199 4638316 4638881 4638144 4637299 4639024 4634604 4634153 4633948 4636635 UTME 620803 620542 321022 621355 621475 621971 625041 636647 628835 624748 DEPTH of MONITORING SITE ( m) 1 1.2 0.9 0.9 0.8 0.7 0.8 0.8 1.0 0.8 0.5 1 Depth of water at deployment 2 Pump 10 data will not be discussed in this document. Results Radio- marked suckers We located fish 231 times in locations similar to those determined by Reclamation biologists in 1993- 95 ( Figs 3- 4). Lost River and shortnose suckers did not appear to differentiate use of the sump by species; we located both species intermixed throughout the monitoring period. With the exception DH and DHNW ( Fig. 2), water quality sampling sites were close to seasonal sucker use areas. Of 14 suckers marked, mortality occurred in only 1 fish. A Lost River sucker (# X9) was tagged on 18 May at the Anderson Rose Dam; she was not located again until 23 days later on 9 June. From 9 June to 17 November, # X9 was located by signal within approximately 15 m of the original location based on the location data. It is likely that this fish died in early June within 2- 3 weeks of being radio- marked. It is unknown if this mortality was related to the stress of handling and marking or some other cause. April - May - In April- May, a period of maximum fish movements ( Figs. 5- 18), most suckers congregated in the AEnglish Channel ® between the sumps with a scattering offish located between the northwest corner of Sump 1( A) and the AEnglish Channel ® ( Fig. 4). Only 1 fish radio- marked in Tule Lake moved into the Lost River. This particular fish, a female shortnose sucker (# G9) was radio- marked in the northwest corner of Tule Lake on 9 April, was located in the AEnglish Channel ® on 14 April, and subsequently was located in Lost River below Anderson Rose Dam on 29 April and 6 May. Tule Lake Sucker Radio Telemetry \ pril 1993 - \! a> 1995 Hi tckwtstmd H) drohgy mm Marth/ Wi'lhiml • • River I Sucker Locations o Jan - Mar & Apr - May ° Jim - Sep • O t t - l h i 1 I . . . . . . ydtOl Ig) -: i '•'•, l: i M h - c .1 J I SI WS UtoBiihywwUy KkmrtiiB ••. iraOffia MapPinoiccii.- i rM2oni VM, S- » 4 • HJ I-. IKKV USffW& n SBB Figure 3. Locations of radio- marked suckers from studies conducted by U. S. Bureau of Reclamation, on Tule Lake National Wildlife Refuge, California, 1993- 1995. 10 Tule Lake NWR Sucker Radio Telemetry April - December 1999 Oregon California [ Sump 1A Background Hydrology J Lake Uplands SOcker Locations • Apr May o Jun - Sep • Oc! - Dec | Qanuthole area = * 466 acres ( manually est from fish bca Suckei EUdiQ Tdctrcter: L Hi cks, D TtccnsDn, : Nati Wedatd^ Inventory. USTWS i t Hi cfa, usFwsnrsBH o 2/ 00 Figure 4. Locations of radio- marked suckers on Tule Lake National Wildlife Refuge, California, 1999. 11 Tule Lake- Sucker Radio Telemetr> - 1999 MMti « phrnl Fish: Lost River Sucker " A9" Sex Female Length: 777 mm fag I ocation I ulc I ; ike Sump IA Tai: Dare: 04/ 02 99 Vlort. Date: 3 - O 5 ni 0 5 - 1 ni ( Surface Fixation - 4034.9( 1') Lain' ihpth 1 - 15m Itydrolah tUm » t tm fcdarl .' i rein: l. llni. i. Becb- rmc l^ . I M I ^ I V I M . Kl; nn: nli limm Xvtup,- :, rr, k, I M •'• - \ * e BMb% « ldry KIWWHI I t em ,^ wnOi-... I SB I Background Hy* » : 4.. .. , „ | WCIIWKIJ faivewior^. I'SI A S >• • ••• i •• i MZcne IC ' •..-• .: i;% i n . , i s , u s Figure 5. Movements of radio- marked sucker A9 on Tule Lake National Wildlife Refuge, California, 1999. 12 Tule Lake- Sucker Radio Telemetry ~- 1999 Hsh ], ost River Sucker"! Sc\ Female Length: UK] mm Tag Location [ We Lake Sump IA IML Dace U4/ O? W Mort Date: • i Khrr( m » depth) • 1 Mwrvl. Will. 1.1,1 I |- l Muil I t * 3 - O 5 m 0 5 - t rn ( Surtax i: Nation - 4O34. W) flyJrttlaff SiKker RacfcTclemdn: I. IliduU. Bccks CompK. i BFW8 I. a.- Mil ,. l klmulklfaun \ « » OI.. . I MM Background llyfrotogv \ « bonB| W ctlands inv « « or., U8FWS Map IVv^ vi ... i M ,. !• ' ••"• . I:-. | || ... i JFWS Figure 6. Movements of radio- marked sucker B9 on Tule Lake National Wildlife Refuge, California, 1999. 13 Tule Lake- Sucker Radio Telemetry - 1999 Fidi Lost River Sucker * C9" Sex Male Length: 619 mm Tag Location I ule Lake Sump IA Fag Date: M/ 02 w VIon. Date: { Surface Fixation - 4II34. W) tiat- ttffawmf th- frohf(\ • • Khii i> nJv|> th) H i \ iM, vh\ wtl,..., i UplniKi Lak mm MU. I n. i 3 - 0 5 ni 0 5 - 1 ru • I n kaAo Tckwdn: LHkfcaJ. Beduimd P HMUWM K V'l « • .|: I- II: I-| I I n i ii Cwnpk. I 8FWS Klmwil.[ ten< •• . : M . . . I M : mind I l > * o t i c \ Ntttaaal Wetlands Inventory* I ^| •.!•••• • • . • I -. I \ | . , K 1 1 . i •• » •• -; !:•• I II . I SFWS r Mil . Figure 7. Movements of radio- marked sucker C9 on Tule Lake National Wildlife Refuge, California, 1999. 14 Tule Lake- Sucker Radio Telemetry - 1999 Haf kgnm n BB Rh « ' i MM. Fish Shortnose Sucker " l) l>" Sex Male Length: 473 nun ail Location: I ale Lake Sump IA Tag Date 04/ 02/ 99 Mort. Date: I Surface Fixation - 41> 34. lW) /....'.:• Depth Mi, I lbtx 0- OSm ^ ^ 0 5 - 1 rti - I - ' I •' • • ' ' • I HkfcU. lUbrxilHil) I ! . . . ! - . K Mil M KlttiHtfiBttk K « Aig « : . , - , - , L . I M ''. •• Ifydrolah Kit,-* i., i.- . il ... (.. , , , i , , •. . ; „ , . . , M ! - U a d ^ r t w n d ! ! > * • ••'• • t n | XVctinjKlt [ mcTrt « . T\. • SFWS I • • . . • • , , • l:% | n ...... i M A S * £*> Figure 8. Movements of radio- marked sucker D9 on Tule Lake National Wildlife Refuge, California, 1999. 15 Tule Lake- Sucker Radio Telemetry - 1999 Fish Shortnose Sucker T39" Sc\ Female Length: 523 mm rag Location I ule I ake Sump IA rag Date M/ 02 w Date: • 1.1 I i) I 1-.. 1 • | i i . . I. llcct. M m i l l ) ] Compl- • ' "* I '• S 5> NJUOIWI Wetlands b i v c m u r y I IS I » S • ••• I " I ••. l/. nc It. i . . . : - . , ' II-. | || ..... Figure 9. Movements of radio- marked sucker E9 on Tule Lake National Wildlife Refuge, California, 1999. 16 Tule Lake- Sucker Radio Telemetry - 1999 Fish Lost River Sucker " IV Sc\ female Length: 754 mm Tag Location Tule Lake Sump 1A * rag Date 040; 99 Vkirt Date: ( Surface Fixation - 4( 134.90') Hat ground Hydrology U • : • • Rhtr< iM » < Jvpfh) • iM.., lll » r • i M. tvh\ VHl,, na 0.0,5m Uphml » 0S- 1rt. 1 - 1 5 IT » 1 £ m fackcrRadk> 1 r .. In: UfisfcaJ. Ikvkwjjjui P » •, K V, 1 • l: m: rli M a Jfcflifc* CorapUv I IFWS Uydrolth sit,- s i , i t \ t, il*> m. f n Klmwlh tfewn .\ wn < » flfa . I SBR K o t o ^ : \ ai,,, na| Wctljmd* bivcm^ f • I SFWS Map hV^ vl .. . I MZpftClO Cony aid I;-, i n , . UWTOS Figure 10. Movements of radio- marked sucker F9 on Tule Lake National Wildlife Refuge, California, 1999. 17 Tule Lake- Sucker Radio Telemetry - 1999 Fish Shortnose Sucker " Q9" I cm ale Length: 544mm I. IL1 Location Tule Lake Sump IA * rag Date 04/ 09/ 99 Mori ( Surface rloaliun - I II . . I. \'-.-\-- m.' I-K V i ! l • l : n i : r l l ! - i i : ii : . r , : . | , . I s|\ VS KlmuHi Btom Aivs 4 M1K. I SBR \ j i > i m l Wetlands invcnlon i 5FWS M. « ;. ' - . . I - . I M / . „ . • | » . I II , • I SFWS BB Ki^ i imi M \ hrvh\\ ilhiml Upland Lais Otfttk MuiJ Hals Figure 11. Movements of radio- marked sucker G9 on Tule Lake National Wildlife Refuge, California, 1999. 18 Tule Lake- Sucker Radio Telemetry ~ 1999 • Jit" Fish Sex Length: Tag Location: Tag Date: Sh oi1no so Male 440 mm Tule 1 < ikc 04/ 09/ 99 / Sucker Sump " H9" IA f tif( rtitiini / / i Kh< < 1- 1 . ri. l Mud FliitK 0 - 0 5 m 05 - 1 ni < SurfiKi 1 , - > 18m K V , , • l; , - n : , l , 5 , , , : . • „ • , '• • ' • • : ' k • ' s | ' ' ' s K i i. l I-. . . . tVu. I M i ^ ' ^ \ tbonn\ Wetl « nd « faiv « mor>. I . \ I A • » - i I M „, | i. Ih | || , , I M Figure 12. Movements of radio- marked sucker H9 on Tule Lake National Wildlife Refuge, California, 1999. 19 Tule Lake- Sucker Radio Telemetry - 1999 I- isii Lost River Sucker " 1 Sc\ Female Length: 775 mm Tag Location: Tule Lake Sump IA Tag Dale: 04/ 09/ 99 Mort. Date: ( Surface I* k^ atinn Tckmrtn: l.|| uk. I. K J y me l> I..: II> M K •-.•. I - I : . . , : Compkv • BPWS "' ••' Klmwlbl? ti » m A* MOffice I SBR IvckuioRv : \ atxin » l Wetlands biv « Mory. I > I / i < n k j f M U U l f i x • • • ' < • . • • Khri ( IM » tlr|> rh) Mat vh Wit I HI ii I LpbmJ Figure 13. Movements of radio- marked sucker 19 on Tule Lake National Wildlife Refuge, California, 1999. 20 Tule Lake- Sucker Radio Telemetry - 1999 Fish: I- osi River Sucker " P9" Sc\ Female Length: 7^ ' m m lag Location Anderson Rose Dam Tag Dale: 04/ 30/ 99 Mort. Date: ( Surface bk'talkm - 4UJ4. W) % mkm i .' i eraetn: |.| ikk* J. lkvl> « uui I) . . . . i - K '•.'. . - i . . r . . i . BMte Rvtug « , « ., .. . . - . M V . . Compk. i IPWa I « l.- . ll ,. t ,.. , , , | , , •. . „ ,. . | M i • E* K* gr° umi I K v H , ^ htaHml Wctl » nd » knvMori i -- I - s ^ • •• I •• I M i . , - It. > •—•• . i;-. i II . . i MWN Figure 14. Movements of radio- marked sucker P9 on Tule Lake National Wildlife Refuge, California, 1999. 21 Tule Lake- Sucker Radio Telemetry - 1999 Fish Lost River Sucker " i;(>" Sex Male Length: 556mm Tag Location Anderson Rose Dam Tag Date 05 05 w Mort. Date: ( Surface H o at ion - - MM4. W) • i • i n. t . i. ikJ^•. m..- I) . M. HV*. K Vi . • hnrnflh ii » m Hvfil^- '" I - I K ••. . I" K i r •• . M ... I MiM \-, ..,.•. \ , ,,.| v. , |,,.|. ( r. v : , f . l MH • . ! ., I M „ |. Figure 15. Movements of radio- marked sucker U9 on Tule Lake National Wildlife Refuge, California, 1999. 22 Tule Lake- Sucker Radio Telemetry - 1999 Fish: Lost River Sucker " W Sox: Male Leagth 486 mm \ AII Location; Anderson Rose Dam Tag Date: 05/ 05/ 99 Mort. Date: ( SurfiK- c Floaiiun 4 « . U. W| •• ' • •• ' • ; • ' ' ' ' I I I . . • 1. Bedu HI.- D . K V I " , I . < l: iMi; iTh : - i • : .1 MIK! KI. HH I - • • > • . • • \ 1 i i i v . v l . r i l - i r . v : • ! • . 1 • . . . 1 . • 1 \ | , , c 1. Figure 16. Movements of radio- marked sucker V9 on Tule Lake National Wildlife Refuge, California, 1999. 23 Tule Lake- Sucker Radio Telemetrv - 1999 Fish: Lost River Sticker " W(>" Sex: Male Length 594 nun I nil Location: Anderson Rose Dam Tag Date: 05/ 18/ 99 Meet. Date ( Surface H o at inn 4< i. U/) i » ') - ' • ' I ' : ' - ' • I Hid • i. Bcvl. v.' im: P . , i iikr. Klanwlh B* oi R< tu^ : . . r v . k v I M •'•- ' -*•• Mil - >•> • KlMmth IViim .\ wn 0 1 . . . I SBR g \ ^ m u l Wcllmls En^ :• r I ^ | V \ • • • I - i I M/ V. u- It; 1 ••••:•• .-.' II-. W Figure 17. Movements of radio- marked sucker W9 on Tule Lake National Wildlife Refuge, California, 1999. 24 Tule Lake- Sucker Radio Telemetry - 1999 Fish: Lost River Sucker " X9" Sex: Female Length 477 mm Tag Location; Anderson Rose Dam Tag Date: 05,1899 Mori. Date, suspected in June 1999 Hn i in Mat* h Will •. 1. fackn RadioTclenvtn; i. tfidbU. lkvk « ramLI>. r* Mmw « t K ','. . hmtdth B* m R^ UB* CompK- • n •'• • B % VJI < Kflb . I M i ,• h> tir> l Wetlands Envcntun. I SFft'S \ I , \ ' I K I I | , ... | s.| , \ s Figure 18. Movements of radio- marked sucker X9 on Tule Lake National Wildlife Refuge, California, 1999. 25 June - September - During this period, nearly all suckers ( particularly during July and August) could be found in the DH at the south central portion of Sump 1( A) ( Fig. 4). By connecting the outermost locations of approximately 90% of radio locations, the calculated area of the DH was 188 ha. Suckers using the DH were found in depths ranging from 1.0- 1.3 m ( 39- 50 in) ( Fig. 19). September - December - During this period suckers moved from the DH to the northwest corner of Sump 1( A). As of the writing of this report, ( February 15, 2000) the 13 remaining fish occupy the same area. Recruitment Surveys by Reclamation biologists for larval and juvenile suckers in the Lost River below Anderson- Rose Dam failed to document the presence young of the year fish. Below is a summary of surveys: Date 5/ 25/ 99 6/ 2/ 99 6/ 10/ 99 Result Searches for eggs in gravel below Anderson- Rose Dam revealed eggs in 4 of 5 sites, some of which were viable. Larval surveys conducted at 3 sites ( visual and dip net) from the dam to the wooden bridge were negative. Larval surveys conducted at 5 sites including the dam, 2 and 1 mile downstream, the wooden bridge, and East- West Road were negative. Larval surveys conducted at 2 sites downstream of dam were negative. Water quality pHBln general, pH values were less variable in the DH then areas outside this region ( Fig. 20). In all areas, median pH values remained below 9.5 until early June at which time values outside the DH were frequently above 10.0. pH values were particularly high (> 10.0) in late June through August in ESIB and NWS1A and periodically in the EC and WS1B. pH values in the DH and areas adjacent, remained below 10.0 through September; however, there was a gradual rise in pH values in DH sites from May through September. In late September and early October, DH pH values exceeded all other sites. rem/ reratareBTemperatures in all regions reached a peak in late July through early August with no discernible difference between DH or NDH sites ( Fig. 21). Dissolved oxvgenBDonut Hole sampling station s differed in dissolved oxygen characteristics relative to other areas of the sumps. During the June through August period DH sites ranged from 4.5 to 11.2 mg/ 1 while areas outside this region ranged from 1.1 mg/ 1 to 18.2 mg/ 1 ( Fig. 21). Toward November DH and NDH sites became similar DO dynamics ( Fig. 21). 26 Turbiditvllln general, turbidity values appeared greater in the DH versus areas outside, although some sites particularly in Sump 1( B) were quite variable particularly in June and July. This may have been due to the large amount of filamentous algae in Sump 1( B), potentially interfering with the measurement. Turbidity rose sharply at sites by late October and November ( Fig. 23- 24). 20 >• 1 5 O UJ a UJ DC 10 0 39 41 43 45 47 More DEPTH Figure 19. Water depth used by radio- marked suckers in the " Donut Hole" ( June- August), Tule Lake NWR. California. 27 BJll I U r S o I! Figure 20. pH data collected from " Donut Hole" and non- Donut Hole water quality sampling sites on Tule Lake National Wildlife Refuge, California, 1999. Box and whisker plots represent the median, 25- 75* and 10- 90* percentiles, and outliers. 28 temp rC) S 2 £ ' I j 1 II i 9 E 9 S Figure 21. Water temperatures collected at " Donut Hole" and non- Donut Hole sites on Tule Lake National Wildlife Refuge, California, 1999. Box and whisker plots represent the median, 25- 75^ and 10- 90^ percentiles, and outliers. 29 do ( mgfl) I do ( mg/ l) OP> !*• WKamm 01900 gGBM s ' S:' TP" » S i I ! if Figure 22. Dissolved oxygen concentrations at " Donut Hole" and non- Donut Hole sites on Tule Lake National Wildlife Refuge, California, 1999. Box and whisker plots represent the median, 25- 75* and 10- 90* percentiles, and outliers. 30 260.0 -. 240.0 220.0 - 200 0 180.0 => 160.0 H 140.0 - z 120.0 100.0 - 80.0 60.0 40.0 20.0 n n - » NT" —•— Depth ( m) fc= _ 6/ 2 107.00 0.8 Donut Hole Northwest - — .^^^ 6/ 7 77.20 0.8 H •—-^^ ' '—^ 6/ 14 25.30 0.8 6/ 21 24.80 0.8 - 1.0 o o O CJl depth ( m) 260.0 -, 240.0 220 0 200.0 180.0 - 2 160.0 z 140.0 - 120.0 100.0 - 80.0 - 60.0 40.0 20 0 0.0 » NTU — a— Depth ( m) , •=— mmm •= « a 6/ 22 44.00 0.9 Donut Hole West — « — — » - 6/ 28 26.60 08 •— 7/ 6 19.90 08 . ^ m — _ _ _ _ _ _ _ 7/ 13 25.70 0.8 • - _ — r- • 7/ 19 51.40 0.8 1.0 0.5 £ a. T3 0.0 260 0 240.0 - 220.0 - 200.0 - 180.0 i « n n _ H 140.0 - z 120 0 ^ 100.0 • 80 0 60.0 40.0 20.0 - u. u » NTU — m— Depth ( m) 6/ 22 93.70 0.8 6/ 28 95.40 0.7 Donut Hole East 7/ 6 72.70 0.7 7/ 13 32.30 0.7 —•'•"-""* 7/ 19 50.20 0.5 -*"— 7/ 28 62.50 0.8 8/ 2 73.30 0.8 \ ^ 8/ 10 18.55 0.8 8/ 19 50.20 0.8 8/ 25 22.20 0.8 8/ 31 58.67 0.7 \ 9/ 8 14.38 0.8 9/ 14 11.03 0.8 9/ 20 7.00 0.7 9/ 29 7.80 0.7 j / A - 10/ 25 51.00 0.7 t - fT u 11/ 23 210.00 0.6 1 0 - 0.5 JZ jepi - 0.0 Figure 23. Turbidity at " Donut Hole" sites on Tule Lake National Wildlife Refuge, California, May to November 1999. 31 260.0 i 240.0 220.0 200.0 180.0 3 160.0 £ 140.0 - 120.0 100.0 80.0 60.0 40.0 20.0 0.0 » NTU —•— Depth ( m) • ^ 6/ 2 81.10 0.8 Donut Hole - — - ^ 6/ 7 49.20 0.8 — • 6/ 14 21.50 0.8 =— 1 6/ 21 24.80 0.8 r 1 0 o p d en depth ( m) 260 0 240.0 • 220.0 - 200.0 . 180.0 - K 160.0 • z 140.0 - 120.0 100.0 80.0 . 60.0 - 40.0 - 20.0 0.0 . t K » TII — a— Depth ( m) B — • 7/ 21 53.30 0.8 .— m-— 7/ 28 40.50 0.8 Donut Hole South _—• 8/ 2 56.80 0 9 » - ^ 8/ 10 17.13 0.9 *—• 8/ 18 19.70 0 8 8/ 25 21.73 0.9 ^ \ 8/ 31 64.90 0.8 9/ 8 21.27 0.8 9/ 14 20.80 0.8 9/ 20 29.97 0.8 ^ - • - ^ 9/ 29 49.30 0.8 / / 10/ 25 33.70 0.8 / / 11/ 23 170.00 0.7 1 0 o o d en depth ( m) Figure 23 ( cont.). Turbidity at " Donut Hole" sites on Tule Lake National Wildlife Refuge, California, May- November, 1999. 32 260.0 -, 240.0 - 220.0 200.0 180.0 - 160.0 Z> 140.0 \ z 120.0 - z 100.0 80.0 60.0 40.0 20.0 - 0.0 *_ NTU • depth ( m) y 5/ 26 12.30 0.7 6/ 2 58.70 0.8 A- 6/ 7 20.30 0.9 / / 6/ 21 57.40 0.8 // A A\\ 6/ 28 239.0C 0.8 V\ East Sump 1B J s in 81.70 0.7 : / I 7/ 12 10.40 1.0 | A / \ J I s f 7/ 27 228.00 1.0 \ - V \ 8/ 2 88.00 0.8 8/ 10 40.00 0.9 8/ 18 38.17 0.8 8/ 31 11.30 0.7 9/ 9 7.00 0.7 9/ 14 6.17 0.7 9/ 20 5.83 0.7 • / 10/ 25 44.80 1.0 * 4-— \ ft . 11/ 23 186.00 0.5 1.0 ? e Q. 0.5 • 0.0 260.0 n 240.0 - 220.0 200.0 180.0 160.0 D 140.0 1— 120 0 z 100^ 0 80.0 60.0 An n 20.0 - 0.0 - —+— NTU —•— depth ( m) —•— 5/ 26 13.70 1.0 _, • —- « - 6/ 2 57.30 1.1 --•— ' \ 6/ 7 41.10 1.1 6/ 21 18.70 1.0 —•— / \ 6/ 28 138.0( 1.0 \ \ / ¥ West Sump 1B - . • — • / 7/ 7 ) 29.90 1.0 A \\ 7/ 12 88.90 1.0 k / \ / 7/ 27 19.00 0.9 / \ / \ 8/ 2 73.00 1.0 L \ \ 8/ 10 5.47 1.0 8/ 18 6.40 1.0 8/ 31 9.20 1.0 9/ 9 8.58 1.0 9/ 14 8.37 0.9 9/ 20 11.73 0.9 / / 10/ 25 39.50 0.7 f 11/ 23 85.00 0.8 1 5 sz Q. - 0 . 5 • - 0.0 260 0 240.0 220.0 - 200.0 - 180.0 160.0 3 140.0 t ; 120.0 100.0 80.0 - 60.0 An n . 20.0 0.0 » NT" — m— Depth ( m) 6/ 2 46.50 0.8 -~ « — 6/ 7 16.10 0.9 —•—. 6/ 14 39.00 0.8 / 6/ 22 9.71 0.8 English Channel Sump 1A 6/ 28 6.79 0.8 \ ^ _ 7/ 13 17.90 0.8 7/ 20 17.60 0.8 7/ 28 26.80 0.8 8/ 10 4.80 0.9 8/ 19 7.33 0.8 8/ 25 6.50 0.8 8/ 31 7.10 0.8 9/ 8 13.34 0.8 ==•== 9/ 20 15.50 0.8 J 9/ 29 22.60 0.7 — y / 10/ 25 98.70 0.8 11/ 23 146.00 0.8 1 5 - 1.0 — 0.5 - g 0.0 260 0 240.0 220 0 - 200.0 - 180.0 - 160.0 => 140.0 - £ 120.0 mnn . 60.0 40.0 - 20.0 u. u J •— NTU —•— Depth ( m) I 6/ 2 36.50 1.2 —•— 6 / 7 12.60 1.2 6/ 14 13.10 1.2 y 6/ 28 7.40 1.1 7/ 6 71.60 1.0 Northwest Sump 1A —•— 7/ 13 5.27 1.1 — » — —•— 7/ 19 28.50 1.1 7/ 28 20.50 1.2 8/ 2 32.10 1.2 ^- B—' 8/ 19 4.50 1.1 / 8/ 25 52.87 1.1 A ' \ 8/ 31 115.67 1.2 ="-•— \ —•*=; 9/ 8 4.10 1.1 1 4- 9/ 14 7.89 1.1 —•— J I \ 9/ 20 12.43 1.1 — « ^ 10/ 25 180.00 1.1 11/ 23 164.00 0.9 1 S d jpth ( m) • 0.5 - o - 0.0 Figure 24. Turbidity at non- Donut Hole sites on Tule Lake National Wildlife Refuge, California, 1999. 33 Discussion Water Quality The area of the DH was delineated from plotted June through September locations of radio-marked suckers ( approximately 188 ha.). The location of the DH could also be seen as an area of relatively turbid water from aerial photographs from August 1998 ( Fig. 25) as well as aerial photographs taken in 1984. It is possible that the combination of 2 factors may cause the observed turbidity in the DH. First, seeps or springs may be present in the area which result in more favorable water quality during summer which attracts suckers as well as other fish species to the area. The resultant concentration offish ( suckers and chubs) may stir the sediments during feeding activities, thereby creating the observed turbidity. The additional turbidity in the DH may inhibit light penetration and the production of algae, thereby reducing photo synthetically elevated pH and the extreme minimum and maximums in DO typical of may water bodies in the Klamath Basin including Tule Lake ( Dileanis et al. 1996). The rise in turbidity at all sites in fall is likely due to the break down of rooted aquatic vegetation which then allows for wind induced wave action to stir the sediments. Other than the DH, all other sites had dense concentrations of rooted aquatic plants and/ or filamentous green algae during summer. June to September DO and pH dynamics in the DH appeared different than at NDH sites ( Figs. 20 and 22). The difference was greatest in early summer with the difference becoming smaller by late summer and essentially disappearing by fall. Whether this water quality difference was a result of the more turbid waters or inflow from springs is unknown. However, attempts by Service hydrologists to model inflows, evapotranspiration, and outflows from the sumps have resulted in a positive imbalance of approximately 21,000 acre- feet of water from April through September. This positive imbalance is greatest in spring and early summer, gradually lessening by summer and essentially disappearing by fall ( Tim Mayer, pers. comm.). If this inflow is occurring, it may explain differences in summer water quality between DH and NDH sites. June to September water quality in the DH may be critical to the over summer survival of suckers in Tule Lake as pH and DO in NDH sites during summer often exceeded the tolerance limits for the fish. DO and pH levels at DH sites were less variable and did not reach the extremes that were reached in NDH sites. The lowest DO measured during June through September at DH sites were 4.83 mg/ 1 ( DHWEST) and 4.96 mg/ 1 ( DHEAST). DO and pH during summer from this study were similar to values collected by Reclamation in 1992 ( Table 3). Buettner and Scoppettone ( 1990) found juvenile suckers only where DO was above 4.5 mg/ 1. It is currently believed that adult suckers become stressed at DO levels below 4.0 mg/ 1 with mortality occurring at or below 2.0 mg/ 1 ( M. Buettner, pers. comm.). The relatively high over- summer survival of radio- marked suckers, compared to suckers radio- marked in Upper Klamath Lake ( M. Buettner, pers. comm), is further evidence of suitable summer water quality conditions in the DH on Tule Lake. 34 Figure 25. " Donut Hole" in Sump 1( A) of Tule Lake NWR. Note visible turbidity of area. 35 Table 3. Mean dissolved oxygen, pH, conductivity, and temperature on Tule Lake National Wildlife Refuge, California, July and August 1992. Data are from 2 sites; 1 site each in Sump 1( A) ( within the ADonut Hole@) and 1( B). All data were from 96 hour continuous readings from Hydrolabs. Data were collected at intervals of 1- 2 hours. ( Data summarized from U. S. Bureau of Reclamation). Site Sump 1( A) Sump ( IB) Depth ( M) < 0.5 0.51- 1.5 > 1.5 < 0.5 0.51- 1.5 > 1.5 pH (± SD) ( 1200- 1700 hrs) 9.32 ± 0.83 n= 81 9.22 ± 0.93 n= 26 8.30 ± 0.71 n= 10 9.65 + 0.44 n= 21 9.79 ± 0.45 n= 7 No data Temp ° C (± SD) ( 1200- 1700 hrs) 21.85 ± 2.84 n= 81 21.53 ± 2.46 n= 26 19.90 ± 1.59 n= 10 22.96+ 1.10 n= 21 22.11 ± 0.51 n= 7 No data Conductivity 500 ± 266 n= 81 598 ± 277 n= 26 859 ± 694 628 ± 148 n= 21 571 ± 74 n= 7 No data DO1 Oof 31 days - - 8 of 21 days - - 1 Proportion of monitored days having a minimum dissolved oxygen level below 5 mg/ 1. ( Data from U. S. Bureau of Reclamation) pH levels in the DH generally remained below 10.0 whereas non DH sites frequently exceeded 10.0 ( Fig. 19). Falter and Cech ( 1991) determined a maximum pH tolerance in shortnose suckers of 9.55+ 0.43 under laboratory conditions, levels generally exceeded in June - September at non DH sites and some DH sites in late summer. Buettner and Scoppettone ( 1990) found juvenile fish in Upper Klamath Lake largely at sites with pH < 9.0, as did Simon et al. ( 1996) in 1994. However, in 1995, Simon et al. ( 1996) found that most juvenile fish ( 54%) were captured in areas of higher pH (> 10.0). Laboratory studies indicate significant mortality of larval and juvenile fish at high pH values (> 9.55) ( Falter and Cech 1991) and 9.92- 10.46 ( Bellerud and Saiki 1995). Previous water quality and fish health studies on the refuge determined that water quality conditions were stressful to aquatic life and was resulting in a high ( up to 37%) proportion offish with deformities ( Dileanis et al. 1996), however, studies of sucker ecology in Tule Lake have indicated that individual fish in the lake have a high condition factor and are free of external parasites ( Scoppettone and Buettner 1995). Bennet ( 1994) recognized this apparent inconsistency, stating, A... the observation that Tule Lake suckers are in better physical condition than Upper Klamath Lake suckers indicates that certain areas of the aquatic system may be of particular importance for the recovery of those species. ® In the case of Tule Lake this Acertain area@ is likely the DH.. Suckers in Tule Lake may be in good condition because of their limited population size, the abundant food resources in this lake, and adequate water quality ( in the DH) to survive the summer period. 36 Sucker movements Although, suckers were relatively sedentary during most periods of the year, they exhibited the ability to make long distance moves in relatively short periods of time, particularly during the April spawning period. The northwest corner of Sump 1( A) receives about 90% of the inflow from the Lost River and spring winds on Tule Lake tend to move large quantities of water through the AEnglish Channels back and forth between Sump 1( A) and 1( B). This movement of water at both locations may explain the movement of fish observed in April and May. Suckers may be attracted to both locations when seeking spawning habitat in spring. Recruitment During the April marking period, most captured suckers appeared to be physiologically ready to spawn; however, only one fish moved into the river. Of 10 radio- marked fish monitored by Reclamation in 1993- 95 no fish attempted to run the Lost River. This low proportion offish that attempt to spawn may have one or several causes or a combination, including: 1. Stress of handling and implanting radio- transmitters so close to the spawning season may prevent fish from becoming reproductively active. 2. Under normal conditions, only a small proportion of Tule Lake suckers may attempt to spawn in any particular year. 3. Flow conditions in or at the mouth of the Lost River may be inadequate to draw the fish into the river. 4. A shallow bar (< 0.3 m) of deposited silt exists between the lake and the mouth of the river which may form a physical barrier to the fish. At the present time, a mandated flow of 30 cfs is released below Anderson- Rose Dam to provide spawning habitat at the Dam. Although this flow is intended to provide suitable spawning conditions at the Dam, these flows may be inadequate to entice fish into the river. It is likely that the historic spring flows in the Lost River were many times higher than current regulated flows. However, given that the fish are largely unsuccessful in spawning and risk additional mortality traversing the river, adult survival may be enhanced by remaining in the lake. Scoppettone and Buettner ( 1995) also observed no radio- marked fish from Clear Lake to move into Willow Creek during the spring spawning period. In this case the authors attributed this result to either capture stress or low stream flows during spring. 37 Habitat use Although the DH is relatively shallow relative to other areas of Tule Lake, use of the DH may be mandatory to ensure over- summer survival. Although deeper waters are available to the fish, especially in the northwest corner of Sump 1( A), DO levels, in particular, likely preclude their use. Suckers did not move out of the DH until October when DO levels began to rise with cooler water temperatures. Although, Sump 1( B) contained suitable water depths and water quality conditions in fall, no suckers were located in this area. It is possible that suckers may prefer not to pass through the pipes connecting the Sumps or the proximity and flow from the Lost River in the northwest corner of Sump 1( A) may make this area more attractive as an over- winter habitat area. The relative lack of water depth in the DH as well as other areas of the sumps is becoming of increasing concern because of the loss of water depth through sedimentation. If suckers require a minimum of 3 ft of water, as is current believed ( M. Buettner, pers. comm.), current rates of sedimentation in the sumps threaten the future suitability of Tule Lake for suckers. Based on a comparison of bathymetric surveys conducted by Reclamation in 1958 and again in 1986, sedimentation has been steadily reducing the water holding capacity of both sumps. Between the 1958 and 1986 surveys ( 28 years), Sump 1( A) has lost 22.4% of its water capacity and Sump 1( B) has lost 30.8% of its capacity due to sedimentation. This would indicate a total mean sedimentation of 11.8 inches over this time period ( U. S. Bureau of Reclamation, unpubl. rep). Over the last several years, an attempt has been made to store additional water in Tule Lake during summer by raising water levels above 4034.60 ft. This increase in water elevations ( between 4034.60 and 4034.90 ft) has somewhat mitigated the loss of depth through sedimentation. However, without reinforcing and raising the levees around the sumps, there is a limit as to how high water elevations can rise. At elevation 4035.50 ft., operating regulations require breaching the sumps into overflow areas ( Sump 2 or 3). Although increased summer operating levels may assist the fish, they may also increase the risk of a flood event requiring the breaching of the sumps with potentially negative impacts to the fish. Acknowledgements The authors are indebted to fisheries biologist from the U. S. Bureau of Reclamation, Klamath Project, especially M. Buettner, B. Peck, and M. Green whom provided and surgically implanted radio transmitters, captured adult suckers, located fish from fixed wing aircraft, and assisted with study design. K. Miller from Klamath Basin National Wildlife Refuge collected telemetry, water quality, and GPS data and ensured all data were collected and coordinated consistent with study design. T. Mayer provide training in the calibration, deployment, and downloading of data from the hydrolabs and assisted with interpretation of water quality data. 38 Personnel Communications Buettner, M., Fisheries Biologist, U. S. Bureau of Reclamation, Klamath Project Office, 6600 Washburn Way, Klamath Falls, Oregon. Mayer, T., Hydrologist, U. S. Fish and Wildlife Service, Portland Regional Office, Lloyd Center, Portland, Oregon. Literature Cited Bellerud, B., and M. K. Saiki. 1995. Tolerance of larval and juvenile Lost River and shortnose suckers to high ph, ammonia concentration, and temperature, and to low dissolved oxygen concentration, National Biological Service, California Pacific Science Center, Dixon 103pp. Bennett, J. K. 1994. Bioassessment of irrigation drain water effects on aquatic resources in the Klamath Basin of California and Oregon. Ph. D Dissertation. University of Washington, Seattle. 197pp. Buettner, M. E., and G. Scoppettone. 1990. Life history and status of catostomids in Upper Klamath Lake, Oregon. National Fisheries Research Center, Reno Field Station, Reno, Nevada, 108pp. Coots, M. 1965. Occurrences of the Lost River sucker, Deltistes luxatus ( Cope), and shortnose sucker, Chasmistes brevirostris ( Cope), in Northern California. Calif. Fish and Game 51: 68- 73. Dileanis, P. D., S. K. Schwarzbach, and J. K. Bennett. 1996. Detailed study of water quality, bottom sediment, and biota associated with irrigation drainage in the Klamath Basin, California and Oregon, 1990- 92. U. S. Geological Survey, Water- Resources Investigations Report 95- 4232, 68pp. Falter, M. A., and J. J. Cech. 1991. Maximum pH tolerance of three Klamath Basin fishes. Copia 4: 1109- 1 111. Simon, D. C, G. R. Hoff, D. J. Logan, and D. F. Markle. 1996. Larval and juvenile ecology of Upper Klamath Lake suckers. Annual Report: 1995, Department of Fisheries and Wildlife, Oregon State Univ., Corvallis. 60pp. 39 Scoppettone, G. G., and M. E. Buettner. 1995. Information on population dynamics and life history of shortnose suckers ( Chasmistes brevirostris) and Lost River suckers ( Deltistes luxatus) in Tule and Clear Lakes. U. S. Geological Survey, Reno Field Station, Reno, Nevada. 79pp. U. S. Bureau of Reclamation. 1998. Lost River and shortnose sucker spawning in Lower Lost River, Oregon, U. S. Bureau of Reclamation, Klamath Falls, Oregon. 1 lpp. . 1993. Lost River { Deltistes luxatus) and shortnose { Chasmistes brevirostris) Sucker Recovery Plan. Portland, Oregon 108pp. Hydrolab Corporation. 1997. DataSondeR 4 and MiniSondeR water quality multiprobes, users manual. Hydrolab Corp., Austin, Texas.
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"GAO-05-211"; "April 2005"
Citation Citation
- Title:
- Endangered species : Fish and Wildlife Service generally focuses recovery funding on high priority species, but needs to periodically assess its funding decisions : report to the Chairman, Committee on Resources, House of Representatives
- Author:
- U.S. Fish and Wildlife Service
- Year:
- 2005
"GAO-05-211"; "April 2005"
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8631. [Image] Middle Klamath River sub-basin planning : final report
ABSTRACT Phase VI of the School-Based Klamath Restoration Project (319h) is a collaborative effort between seven Siskiyou County schools, the Siskiyou County Office of Education (SCOE), and the United ...Citation Citation
- Title:
- Middle Klamath River sub-basin planning : final report
- Author:
- Karuk Tribe of California, Dept. of Natural Resources
- Year:
- 2001, 2005
ABSTRACT Phase VI of the School-Based Klamath Restoration Project (319h) is a collaborative effort between seven Siskiyou County schools, the Siskiyou County Office of Education (SCOE), and the United States Fish and Wildlife Service (USFWS). The objectives of the project include: ? Expanding hands-on field science watershed education. ? Encouraging a sense of resource stewardship among students at all grade levels. ? Collecting quality data for inclusion in the 319h data base. ? Teaching applications of the scientific method. ? Providing on-going inservice training for teachers to increase the effectiveness of the project. Project tasks that were completed include acquisition and analysis of Klamath River Watershed Data, including river water temperatures, river cross sectional profiles and spawning ground surveys. Descriptions of methodology are included in the report. Many other watershed-related projects were undertaken by schools. In some cases the field data was collected and compiled by agency personnel. The spawning ground survey data collected by student volunteers was part of a project conducted by the California Department of Fish and Game and the U.S. Forest Service. Although a substantial amount of excellent work has been accomplished by the schools, the opportunity exists to improve the program at all levels. Increased field and technical support is needed to successfully integrate the goals of the project. Computer training for teachers and students is an essential component of the project, which would allow analysis of data and creation of web sites within classrooms. Data analysis and reporting is the critical component of the project that would provide students with a complete understanding of scientific research methodology. Providing a forum for communication between the 319h participants is another important area of the project that needs to be expanded. Travel time, mountainous topography, and intense winter storms can be barriers to travel in Siskiyou County. Communication helps to increase the level of standardization of data collection and transfer and gives teachers a chance to share successful ideas. Communication also sustains the positive momentum of the project, reinforcing the idea of working as a team towards establishing common goals for watershed education.
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CONTENTS STATEMENTS Page American Farm Bureau Federation 26963 Bell, Craig, Executive Director, Western States Water Council 26945 Domenici, Hon. Pete V., U.S. Senator From New Mexico 2691 Gaibler, Floyd, ...
Citation Citation
- Title:
- Western water supply : hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Eighth Congress, second session, to receive testimony regarding water supply issues in the arid West, March 9, 2004
- Author:
- United States. Congress. Senate. Committee on Energy and Natural Resources
- Year:
- 2004, 2005
CONTENTS STATEMENTS Page American Farm Bureau Federation 26963 Bell, Craig, Executive Director, Western States Water Council 26945 Domenici, Hon. Pete V., U.S. Senator From New Mexico 2691 Gaibler, Floyd, Deputy Undersecretary for Farm and Foreign Agricultural Services, Department of Agriculture 26932 Grisoli, Brigadier General William T., Commander, Northwestern Division, U.S. Army Corps of Engineers 26918 Hall, Tex G., President, National Congress of American Indians, and Chair man, Mandan, Hidatsa and Arikara Nation 26950 Raley, Bennett, Assistant Secretary, Department of the Interior 2695 Uccellini, Dr. Louis, Director, National Centers for Environmental Prediction, National Oceanic and Atmospheric Administration 26926 APPENDIX Responses to additional questions 2620 67
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8633. [Image] Water quality and nutrient loading in the Klamath River between Keno, Oregon and Seiad Valley, California from 1996-1998
ABSTRACT A water quality study was performed in the mainstem Klamath River from Keno, Oregon to Seiad Valley, California during 1996 through 1998. Four sites within the study area were continuously ...Citation Citation
- Title:
- Water quality and nutrient loading in the Klamath River between Keno, Oregon and Seiad Valley, California from 1996-1998
- Author:
- Campbell, S. G
- Year:
- 2001, 2007, 2005
ABSTRACT A water quality study was performed in the mainstem Klamath River from Keno, Oregon to Seiad Valley, California during 1996 through 1998. Four sites within the study area were continuously monitored using multiparameter recorders. Water quality sampling was also performed at these four locations in 1996 and 1997. Additional water quality sampling sites were added in 1998 for a total of 8 locations between Keno and Seiad. Temperature ranged from near zero ?C to >25 ?C with cooler temperatures in early spring and fall, and maximum temperatures occurring in July and August of each year. Dissolved oxygen concentration ranged from near zero mg/L to >13 mg/L with highest DO occurring in early spring and fall and lowest DO occurring in mid-summer. Air temperature was generally highly correlated with water temperature with r values ranging from 0.8 to 0.9 during the study period from 1996-1998. Water temperature in the study area exceeded chronic (>16?C) and acute (>22?C) criteria for salmonids during the summer months. Although chronic DO (<7 mg/L) criteria were exceeded throughout most of the study area during the summer, in the free-flowing river below Iron Gate Dam the acute DO (<5.5 mg/L) criteria were not exceeded. Nonpoint source pollution in the form of agricultural return flows, industrial, or sewage effluent entering the stream may have resulted in higher ammonia and total organic nitrogen concentrations at the upstream locations in the Klamath River study area (Keno and J.C. Boyle Powerplant). Nitrification of ammonia and organic nitrogen seemed to result in higher concentrations of nitrate in the downstream Klamath River (Iron Gate Dam). Total phosphorus concentration stayed relatively stable through the reservoirs in the study area, but decreased in the downstream direction between Iron Gate Dam and Seiad. Ortho-phosphorus concentrations increased longitudinally through the reservoirs, then decreased in the downstream direction between Iron Gate Dam and Seiad. An increase in ortho-phosphorus concentration can indicate internal cycling occurring in the reservoirs as well as photosynthesis. On an annual basis total phosphorus loading increased longitudinally from up- to downstream between Keno and Seiad. The increase was statistically significant (p = .03) indicating that the reservoirs in series in the Klamath River study area do not function as a nutrient sink. However, during the summer there was no statistically significant difference in total P loading when Keno, Iron Gate and Seiad locations were compared, therefore, the reservoirs may act as a nutrient sink seasonally. The Klamath River study locations were generally nitrogen limited, although at Keno, a regular change from N limitation to P limitation occurred during the fall of all three years of the study. When the Klamath River annual nutrient loading values are compared to other rivers in the vicinity, the Carson, Truckee, and Long Tom Rivers also appear to be nutrient enriched. The Carson and South Yamhill Rivers seem to be N limited systems and the Wood, Long Tom, Snake and Truckee Rivers seem to be P limited systems. Implementing management strategies for reservoir operations to improve water quality and reduce nutrient concentration or loading in the Klamath River study area to benefit anadromous fisheries may be difficult and expensive. However, improving the thermal regime in spring to benefit YOY salmonids may be possible as is short-term relief in fate summer for over-summering species. Decreases in nutrient concentration or loading accomplished through best management practices in the water shed may allow general protection of water resources in the Klamath Basin for future needs.
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8634. [Image] Klamath Falls Resource Area resource management plan and environmental impact statement : final : Volume 3
Proposed resource management plan/final environmental impact statement for the Klamath Falls Resource AreaCitation Citation
- Title:
- Klamath Falls Resource Area resource management plan and environmental impact statement : final : Volume 3
- Author:
- United States. Bureau of Land Management. Klamath Falls Resource Area Office
- Year:
- 1994, 2005
Proposed resource management plan/final environmental impact statement for the Klamath Falls Resource Area
-
ABSTRACT With the decreasing runs of natural fall chinook salmon* Oncorhmchus tshawytscha.inthe Klamath River basin, concerns were raised regarding the accuracy ma significance 01 me mainstem Klamath River ...
Citation Citation
- Title:
- Mainstem Klamath River fall chinook spawning Redd survey : fiscal year 1995 and 1996
- Author:
- Catalano, Mark
- Year:
- 1997, 2005
ABSTRACT With the decreasing runs of natural fall chinook salmon* Oncorhmchus tshawytscha.inthe Klamath River basin, concerns were raised regarding the accuracy ma significance 01 me mainstem Klamath River .1 chinook spawner estimates. The U.S. Fish and Wildlife Service, Coastal California Fish an - Wildlife Office (CCFWO) was funded through the Klamath River Fish and Wildlife Restoration Act (P. L.99-552) in the Fall of 1993-1996 to address this concern. The 1995 and 1996 survey season marked the third and fourth year that the CCFWO conducted investigations on the upper mainstem Klamath River to derive a reasonable estimate of natural * fall chinook spawners. A total of 339 redds were observed in the 1993 survey. In 1994 and 1995, redd counts increased to a total of 1,702 and 3,240 respectively. During the 1994 and 1995 spawning, seasons, there was evidence that unspawned surplus adult fall chinook salmon released from Iron Gate Hatchery (IGH) successfully spawned in the Klamath River. One hatchery fin clipped adult was observed spawning.30 miles downstream of the hatchery. In 1996, 1,372 redds were observed which wasa decrease of 43% from the previous year. There was complete retention of hatchery origin adults by IGH in 1996, although, the distribution of redds remained the same as previous years. With the new hatchery policy of excess return retention, mainstem escapement can now be considered a reasonable estimate of natural spawning adult chinook salmon. Reddsubstrate composition estimates remained consistent with previous spa- *:g survey data. Based upon 210 redd measurements from 1995-1996, the average redd size L ...e mainstem of the Klamath River was 9.6 nr. The average pit depth, mound depth, and adjacent depth for 1995-1996 was similar to previous survey results. Redds were most common along the wetted channel margins with numerous redds observed in side channels with suitable gravel and water velocities. Unlike 1993 and 1994 some redds were observed by 1995 and 1996 survey crews in rnid-channei areas. Recreational suction dredge mining was present throughout the survey from the confluence of Scott River downstream to the confluence of Indian Creek, although only two redds were observed on recent dredge tailings. Under the existing mining regulations, adverse impacts on redds could occur below the Scon River without protection of spawning areas.
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Abstract. Procedures are presented for evaluating temperature regimes for fish. Although examples pertain to spring chinook salmon (Oncorhynchus tshawytscha), the principles apply to other species. Basic ...
Citation Citation
- Title:
- Guidance for evaluating and recommending temperature regimes to protect fish
- Author:
- Armour, Carl L.
- Year:
- 1991, 2005
Abstract. Procedures are presented for evaluating temperature regimes for fish. Although examples pertain to spring chinook salmon (Oncorhynchus tshawytscha), the principles apply to other species. Basic temperature tolerance relationships for fish are explained and three options are described for comparing alternative temperature regimes. The options are to base comparisons on experimental temperature tolerance results, suitability of a simulated temperature regime for key life stages, or population statistics and predicted responses to simulated temperatures. Key words: Chinook salmon, water temperature, alternative temperature regimes.
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Draft; Title from title screen (viewed on Mar. 17, 2006); "October 2005."; "EPA 841-B-05-005."; Includes bibliographical references
Citation Citation
- Title:
- Handbook for developing watershed plans to restore and protect our waters
- Author:
- United States Environmental Protection Agency, Office of Water
- Year:
- 2005, 2008, 2006
Draft; Title from title screen (viewed on Mar. 17, 2006); "October 2005."; "EPA 841-B-05-005."; Includes bibliographical references
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8638. [Image] The Water Report - The Oregon Water Resources Department: an interview with director Paul Cleary
Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/Citation Citation
- Title:
- The Water Report - The Oregon Water Resources Department: an interview with director Paul Cleary
- Author:
- Envirotech Publications
- Year:
- 2004, 2008, 2006
Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/
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"Serial no. 108-104."
Citation Citation
- Title:
- Oversight field hearing on the Endangered Species Act 30 years later : the Klamath Project : oversight field hearing before the Subcommittee on Water and Power of the Committee on Resources, House of Representatives, One Hundred Eighth Congress, second session, Saturday, July 17, 2004, in Klamath Falls, Oregon
- Author:
- United States. Congress. House. Committee on Resources. Subcommittee on Water and Power
- Year:
- 2005
"Serial no. 108-104."
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8641. [Image] Klamath Basin Emergency Operation and Maintenance Refund Act of 2001: report (to accompany H.R. 2828)
8 p.; "September 17, 2002"; Mr. Bingaman submitted the following report to accompany H.R. 2828Citation Citation
- Title:
- Klamath Basin Emergency Operation and Maintenance Refund Act of 2001: report (to accompany H.R. 2828)
- Author:
- United States. Congress. Senate. Committee on Energy and Natural Resources
- Year:
- 2002, 2006
8 p.; "September 17, 2002"; Mr. Bingaman submitted the following report to accompany H.R. 2828
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Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/
Citation Citation
- Title:
- The Water Report - Klamath coho salmon plan rejected: 9th circuit CA/OR
- Author:
- Envirotech Publications
- Year:
- 2005, 2008, 2006
Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/
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Understanding the maintenance of sexual systems is of great interest to evolutionary and ecological biologists because plant systems are extremely varied. Plant sexual systems have evolved to include not ...
Citation Citation
- Title:
- Spatial Segregation of the Sexes in a Salt Marsh Grass Distichlis spicata (Poaceae)
- Author:
- Mercer, Charlene Ashley
- Year:
- 2010
Understanding the maintenance of sexual systems is of great interest to evolutionary and ecological biologists because plant systems are extremely varied. Plant sexual systems have evolved to include not only complete plants with both male and female reproduction occurring on one plant (i.e., monoecious and hermaphroditic) but also plants with male and female function on separate plants (dioecious). The dioecious reproductive system can be used to test theories on niche differentiation given that having separate plants potentially allows for the exploitation of a broader niche. This increase in the realized niche is due to the ability for separate sexes to occupy different niches, which may occur in different physical habitats. Some dioecious plants have been shown to occur in areas biased to nearly 100% male or nearly 100% female, called spatial segregation of the sexes (SSS). Occupying a broader niche could increase fitness in some species when the separation is used for one sex to gain access to resources that increase reproductive success and/or if the separation inhibits deleterious competition. These two mechanisms have been previously proposed for the evolution of SSS in dioecious plants. The first mechanism suggests that males and females have evolved to occupy different niches due to differences in reproduction (sexual specialization). The hypothesis for the sexual specialization mechanism is that females should have higher fitness in female-majority sites and males should have higher fitness in male-majority sites. The second mechanism states that males and females occupy different niches due to competition between the sexes (niche partitioning). The hypothesis for niche partitioning states that inter-sexual competition should decrease fitness more than intra-sexual competition. These mechanisms are not mutually exclusive. In our research we use the salt-marsh grass Distichlis spicata as our study species because this plant is dioecious and because molecular markers have been developed to determine the sex of juvenile plants. These molecular markers are important for testing the niche partitioning hypothesis for SSS in juveniles. Furthermore, previous work in California has shown that plants occur in areas nearly 100% female and nearly 100% male called spatial segregation of the sexes (SSS). The previous research also showed that female-majority sites were higher in soil phosphorus than male-majority sites. We conduct all research, presented in the proceeding chapters, on Distichlis spicata in the Sand Lake estuary near Pacific City, Oregon and in the laboratory at Portland State University. In Chapter 1 we used field data to answer two questions: (1) Does Distichlis spicata exhibit SSS in Oregon, and (2) If SSS is occurring, do differences occur in plant form and function (sexual specialization) in reproductive female and male plants in female-majority and male-majority sites? We used a sex ratio survey and collected field data on reproductive males and females. Our results show that there are female-majority and male-majority areas and SSS is occurring in the Sand Lake Estuary. Results from our native plant data suggest that reproductive females perform better in female-majority sites compared to male-majority sites which could suggest that sexual specialization is occurring in females. We currently have a long term field reciprocal transplant experiment in place to further address this hypothesis. In Chapter 2 we use field dada to address the following questions: (1) Does site-specific soil nutrient content occur in August, when females have set seed? (2) Does sex-specific mycorrhizal colonization occur in reproductively mature plants? (3) Does sex-specific mycorrhizal colonization vary seasonally in natural populations? Inside the roots of D. spicata a symbiotic relationship is formed between plant and arbuscular mycorrhizal fungus (AM). The AM- plant relationship has been shown to thrive in phosphorus limited areas because the mycorrhizal fungus increases nutrient access to the plant. We analyzed the results of the field soil nutrient content and mycorrhizal colonization in roots of native Distichlis spicata from male-majority and female-majority sites. The root colonization included staining roots with trypan blue and viewing sections of the roots under the microscope. Our results show that female- majority sites are higher in phosphorus and are found to have higher AM colonization than male- majority sites in the field. In Chapter 3 we then reciprocally transplanted D. spicata plants in the field to address the following questions: (1) Does niche partitioning occur in D. spicata, and (2) If niche partitioning is occurring, which plants are competing more? Our reciprocal transplant experiment included seeds grown in intra-sexual, inter-sexual and no competition in cones, planted directly into the field, and allowed to grow for 15 months. After the 15 months was over we measured survival, dry weight and root/shoot ratio. The design of the experiment was to determine the effects of competition (intra-sexual and inter-sexual) and no competition on (single male and female) on survival, biomass and root/shoot ratios. Our results show that niche partitioning is occurring and plants in inter-sexual competition have significantly less biomass then intra-sexual competitors. In, Chapter 4, we conduct a laboratory experiment to address the following questions: (1) Do plants show plasticity in their response to root exudates of the competing plant in regards to the sexual phenotype of the competitor? (2) Do plants show plasticity in their response to root exudates of the competing plant with respect to the relatedness of the competitor? We use sterile seeds grown in 24-well plates containing liquid media. For each competing plant, we picked plants up out of the wells and into the competing plants wells so that plants only experienced media that the competing plant had grown. At no time do roots ever come into contact with one another. We measured primary root length, number of lateral roots, the number of root hairs, root/shoot ratio and total dry weight. We analyzed the study two different ways, one for sexual type competition (inter-sexual, intra-sexual, none) and for plant relationship (KIN, STRANGER and OWN). The results for the sexual type competition found that inter-sexual competition was greater for root/shoot ratio and dry weight. The results for plant relationship competition found that kin plants had a significantly greater number of lateral roots and a significantly longer primary root. The last chapter, Chapter 5, includes a summary of our conclusions. Our study found SSS occurring in the Sand Lake Estuary in Oregon with female-majority sites higher in phosphorus and root colonization higher in percent colonization of arbuscular mycorrhizal fungi compared to male-majority sites. Based on the sexual specialization hypothesis as a mechanism for SSS, we found that females had greater fitness in female-majority sites compared to male-majority sites, suggesting that sexual specialization is occurring in reproductive females. We then tested the niche partitioning hypothesis for SSS, and we found consistent lab and field results suggesting that niche partitioning due to inter-sexual competition is an explanation for why females and males D. spicata plants spatially segregate themselves at the juvenile life history stage. Furthermore, we found that plants that have the same mother had a significantly greater number of lateral roots and a significantly longer primary root. These results suggest that KIN plants respond differently to one another compared to plants paired with a plant not from the same mother (STRANGER) or when the plant is alone (OWN).
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Adaptive ecosystem management is a new paradigm for managing federal forests which requires regular monitoring of ecosystem function and diversity to measure the effects of management. Managers need new ...
Citation Citation
- Title:
- Forest macro-arthropods as potential indicators of ecosystem conditions in Western Idaho : an analysis of community composition, biological diversity, and community structure
- Author:
- Ruby, Margaret E.
Adaptive ecosystem management is a new paradigm for managing federal forests which requires regular monitoring of ecosystem function and diversity to measure the effects of management. Managers need new strategies and tools to help them assess their progress in maintaining healthy, productive and biologically diverse forests. Biomonitoring of select forest macro-arthropod species can provide useful information on the effects of management on forest biodiversity and ecosystem function. The purpose of this study was threefold: (1) to inventory the macro-arthropod community and important environmental variables in the Bear Creek and Indian Creek study area within the Payette National Forest (PNF) in Western Idaho; (2) to compare measures of community composition, diversity, and structure in forest macro-arthropod communities between patches of different sizes and treatment; and (3) to assist PNF managers in their ecosystem management efforts by providing principles to guide the use of macro-arthropods as indicators of changing forest conditions. Transects with pitfall traps were used to collect macro-arthropods at 22 sites in the Bear Creek and Indian Creek study area during the summer of 1994. Five forest patch types in Abies grandis habitat types were sampled. Intact forest patches of 100 or more hectares, and large patches of 50-100 hectares, ranged in age between 50 and 250 years old with multistoried structure. Small patches up to 10 hectares were remnants or fragments of formerly intact forest isolated by logging. A plantation patch was 15 years old with patchy understory and forb cover. Clearcut patches had little or no overstory, and variable understory, and forb layers. At each transect, soil samples were collected and six environmental descriptor variables were analyzed according to patch treatment and patch size. These site descriptors were: basal area (ft²/acre); percent canopy cover for the overstory, understory; and forb layers; litter depth (cm), and percent soil moisture content. Differences detected using an ANOVA and T-tests are discussed in the Results section. Arthropod community composition, diversity, and structure were described according to relative abundance, and four measures of diversity. They were also described by membership in seventeen orders and/or super-families; ten functional groups; two disperser classes (long or short distance); and three species indicator classes. A total of 5455 macro-arthropod individuals, representing 17 orders and/or super-families and 219 species were collected in the Bear Creek and Indian Creek study area. While macro-arthropod fauna relative abundance did not vary significantly by treatment (ANOVA p<0.3), it did vary significantly by patch size (ANOVA p<0.03). Fauna relative abundance was 35% greater in clearcut patches than in large patches (T-test p<0.09). Fauna relative abundance in small patches was twice that of intact (T-test p<0.03) and large (T-test p<0.02) patches. Taxonomic diversity (number of genera/taxa) of beetle, ant, and bug taxa differed significantly according to treatment type(each ANOVA p<0.05). For the top four taxa (beetles, ants, spiders, and bugs), taxonomic diversity was highest in the plantation and clearcut patches. Ants and bugs had their highest taxonomic diversity in the plantation patch (separate T-tests p<0.05) while the taxonomic diversity of beetles was highest in clear-cut patches (T-test p<0.05). Beetle and ant taxonomic diversity varied significantly by patch size (each ANOVA p<0.05). For beetles and bugs, small patches were twice as diverse as intact patches (separate T-tests p<0.04) and 1.5 times that of large patches. Ant diversity was similarly distributed amongst the patch sizes, with significant differences between small and intact and between small and large patches (separate T-tests p<0.05). Of the four species diversity measures employed, only two, [alpha] and JK1 (both measures of richness), were found to vary significantly by patch treatment and size. Evenness (E) and the Shannon Diversity Index (H') failed to detect differences in the majority of tests. Fauna [alpha] and JK1 differed significantly by treatment type (each ANOVA p<0.05). Richness in clearcut patches was nearly twice in intact and large patches, followed by plantation and large patches. Fauna [alpha] and JKl also differed significantly by patch size (each ANOVA p <0.001), with small patch fauna twice as rich as that in large and intact patches (separate T-tests p <0.01). Of the top four functional groups, predators were the most abundant and had the highest taxonomic diversity (number of genera/functional group), followed by herbivores, fungivores and parasites. Predators and herbivores showed increasing taxonomic diversity with decreasing patch size, from intact to large to small (ANOVA p< 0.05). Similarly, predators and herbivores exhibited increasing taxonomic diversity with increasing levels of management: from intact and large to plantation and clear-cuts (ANOVA p< 0.05). Predators and herbivores were most numerous in the managed and small patches. Fungivore taxonomic diversity was also highest in the small and managed patches, though neither patch size nor treatment differences were significant (ANOVA p<0.85). Parasite taxonomic diversity differed by patch size with highest generic diversity in the small patches (ANOVA p<0.l) and by treatment type with generic diversity highest in plantations and clearcuts followed in order by large and intact patches (ANOVA p<0.l). Twice as many genera were long distance dispersers as were short distance dispersers. Relative abundance of long distance dispersers varied significantly by patch treatment and patch size (each ANOVA p<0.0l). Long distance dispersers were most numerous in clear-cut patches, followed in order by plantation, small, large, and intact patches. Relative abundance of short distance dispersers was not significantly different between treatment types (ANOVA p<0.20) but was significantly different between patch sizes (ANOVA p<0.0l). Short distance dispersers were most numerous in small patches followed by plantation, large, and intact and least numerous in clearcut patches. An indicator species analysis of 121 Bear Creek and Indian Creek genera (Dufrene and Legendre 1997), revealed sub-groups of species with 75 to 100 percent "perfect indication" or affiliation for specific patch types. When intact and large patches were pooled and analyzed against all treated patches (plantation and clearcut patches), a list of 36 genera with 75 to 100 percent "perfect affiliation" for intact or large patches was produced (MRPP p<0.05). Small patches had 42 indicators with 75 to 100 percent "perfect indication" when compared with the pooled intact and large patches (MRPP p<0.l). Conclusions Macro-arthropod community composition, diversity and structure did vary, usually significantly, by patch treatment and size. Useful measures of generic diversity include richness estimators [alpha], [beta], and JK1. Examination of taxonomic diversity was also useful, especially for the more mobile arthropods. Pitfall traps provided copious data on the structure of the community in regards to predators and herbivores. Pitfalls, however, did not provide much information about the status of fungivores and parasites in the various different patches. Another trapping method such as the berlaise funnel, would likely provide more information about those functional groups which are likely operating at a finer scale of resolution than that tested by the pitfall trap. Employing both methods would provide a much better assessment of the community of arthropods living on the forest floor. The indicator species analysis program also provided very useful lists of species which are affiliated with particular patch conditions. Taken together, these measures could be adopted for use by forest managers to allow them to assess and monitor the effects of a management regime on the structure and composition of macro-arthropod communities as part of a comprehensive adaptive management plan.
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8645. [Article] Forestry
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Given the vital role of forest ecosystems in landscape pattern and process, it is important to quantify the effects, feedbacks, and uncertainties associated with forest disturbance dynamics. In western ...
Citation Citation
- Title:
- Mapping disturbance interactions from earth and space : insect effects on tree mortality, fuels, and wildfires across forests of the Pacific Northwest
- Author:
- Meigs, Garrett W.
Given the vital role of forest ecosystems in landscape pattern and process, it is important to quantify the effects, feedbacks, and uncertainties associated with forest disturbance dynamics. In western North America, insects and wildfires are both native disturbances that have influenced forests for millennia, and both are projected to increase with anthropogenic climate change. Although there is acute concern that insect-caused tree mortality increases the likelihood or severity of subsequent wildfire, previous research has been mixed, with results often based on individual fire or insect events. Much of the ambivalence in the literature can be attributed to differences in the particular insect of interest, forest type, and fire event, but it is also related to the spatiotemporal scale of analysis and a general lack of geospatial datasets spanning enough time and space to capture multiple forest disturbances consistently and accurately. This dissertation presents a regional-scale framework to map, quantify, and understand insect-wildfire interactions across numerous insect and fire events across the Pacific Northwest region (PNW). Through three related studies, I worked with many collaborators to develop regionally extensive but fine-grained maps to assess the spatiotemporal patterns of wildfires and the two most pervasive, damaging forest insects in the PNW – mountain pine beetle (MPB; Dendroctonus ponderosae Hopkins [Coleoptera: Scolytidae]; a bark beetle) and western spruce budworm (WSB; Choristoneura freemani Razowksi [Lepidoptera: Tortricidae]; a defoliator). The proximate objectives of developing new maps and summarizing where and when insects have occurred before wildfires enable us to address the ultimate question: How does forest insect activity influence the likelihood of subsequent wildfire? In a pilot study focused on the forest stand scale (Chapter Two), we leveraged a Landsat time series change detection algorithm (LandTrendr), annual forest health aerial detection surveys (ADS), and field measurements to investigate MPB and WSB effects on spectral trajectories, tree mortality, and fuel profiles at 38 plots in the Cascade Range of Oregon. Insect effects were evident in the Landsat time series as combinations of both short- and long-duration changes. WSB trajectories appeared to show a consistent temporal evolution of long-duration spectral decline followed by recovery, whereas MPB trajectories exhibited both short- and long-duration spectral declines and variable recovery rates. When comparing remote sensing data with field measurements of insect impacts, we found that spectral changes were related to cover-based estimates (e.g., tree basal area mortality and down coarse woody detritus). In contrast, ADS changes were related to count-based estimates (e.g., dead tree density). Fine woody detritus and forest floor depth were not well correlated with Landsat- or aerial survey-based change metrics. This study demonstrated the utility of insect mapping methods that capture a wide range of spectral trajectories, setting the stage for regional-scale mapping and analysis. In a regional assessment of MPB and WSB effects on tree mortality (Chapter Three), we developed Landsat-based insect maps and presented comparisons across space, time, and insect agents that have not been possible to date, complementing existing ADS maps by: (1) quantifying change in terms of field-measured tree mortality; (2) providing consistent estimates of change for multiple agents, particularly long-duration changes; (3) capturing variation of insect impacts at a finer spatial scale within ADS polygons, substantially reducing estimated insect extent. Despite high variation across the study region, spatiotemporal patterns were evident in both the ADS- and Landsat-based maps of insect activity. MPB outbreaks occurred in two phases -- first during the 1970s and 1980s in eastern and central Oregon and then more synchronously during the 2000s throughout the dry interior conifer forests of the PNW. Reflecting differences in habitat susceptibility and epidemiology, WSB outbreaks exhibited early activity in northern Washington and an apparent spread from the eastern to central PNW during the 1980s, returning to northern Washington during the 1990s and 2000s. Across the region, WSB exceeded MPB in extent and tree mortality impacts in all ecoregions except for one, suggesting that ongoing studies should account for both bark beetles and defoliators, particularly given recent and projected increases in wildfire extent. By combining these insect maps with an independent wildfire database (Chapter Four), we investigated wildfire likelihood following recent MPB and WSB outbreaks at ecoregional and regional scales. We computed wildfire likelihood with two-way binary matrices between fire and insects, testing for paired differences between percent burned with and without prior insect activity. All three disturbance agents occurred primarily in the drier, interior conifer forests east of the Cascade Range, with recent wildfires extending through the southern West Cascades and Klamath Mountains. In general, insect extent exceeded wildfire extent, and each disturbance typically affected less than 2% annually of a given ecoregion. In recent decades across the PNW, wildfire likelihood is not consistently higher in forests with prior insect outbreaks, but there is evidence of linked interactions that vary across insect agent (MPB and WSB), space (ecoregions), and time (interval since insect onset). For example, fire likelihood is higher following MPB activity in the North Cascades and West Cascades, particularly within the past 10 years, whereas fire likelihood is lower at various time lags following MPB in the Northern Rockies, East Cascades, and Blue Mountains. In contrast, fire likelihood is lower following WSB outbreaks at multiple time lags across all ecoregions. In addition, there are no consistent relationships between insect-fire likelihood and interannual fire extent, suggesting that other factors (such as climate) control the disproportionately large fire years accounting for the majority of regional fire extent. Although insects and wildfires do not appear to overlap enough to facilitate consistently positive linked disturbance interactions, specific fire events and years – such as 2003 and 2006 in the North Cascades – demonstrate high insect-fire co-occurrence and potential compound disturbance effects at the landscape scale. The results from this dissertation highlight the key ecological roles that native disturbances play in PNW forests. WSB, MPB, and wildfire have been relatively rare at the regional scale, but all three have had and will continue to have profound effects on particular forest stands and landscapes. Because scale is such an important aspect of both the disturbance phenomena themselves as well as our ability to detect the ecological changes they render, our results also underscore the importance of geospatial datasets that span multiple scales in space and time. Given concerns about forest health in a rapidly changing climate, long-term monitoring will enable forest managers to quantify and anticipate the independent and interactive effects of insects, wildfires, and other disturbances.
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8647. [Article] Contemporary regional forest dynamics in the Pacific Northwest
Recent climatic warming trends and increases in the frequency and extent of wildfires have prompted much concern regarding the potential for rapid change in the structure and function of forested ecosystems ...Citation Citation
- Title:
- Contemporary regional forest dynamics in the Pacific Northwest
- Author:
- Reilly, Matthew J. (Matthew Justin), 1975-
Recent climatic warming trends and increases in the frequency and extent of wildfires have prompted much concern regarding the potential for rapid change in the structure and function of forested ecosystems around the world. Episodes of mortality in wildfires and insect outbreaks associated with drought have affected large areas and altered landscapes, but little is known about the cumulative effects of these disturbances at the regional scales. I used data from two different forest inventories in the Pacific Northwest to develop a framework for tracking regional forest dynamics and examine variation in tree mortality rates among vegetation zones that differ in biophysical setting as well as recent and historical disturbance regimes. In the second chapter I developed an empirically based framework for tracking regional forest dynamics using regional inventory data collected from 2001 to 2010. I characterized the major dimensions of forest structure and developed a classification incorporating multiple attributes of forest structure including biomass, size, and density of live trees, the distribution and abundance of dead wood, and the cover of understory vegetation. A single dimension related to live tree biomass accounted for almost half of the variation in a principal components analysis of structural attributes, but dimensions related to density and size of live trees, dead wood, and understory vegetation accounted for as much additional variation. Snags and biomass of dead and downed wood were related to multiple dimensions while understory vegetation acted independent of other dimensions. Results indicated that structural development is more complex than a monotonic accumulation of live biomass and that some components act independently or emerge at multiple stages of structural development. The hierarchical classification reduced the data into three “groups” based on live tree biomass, followed by eleven "classes" that varied in density and size of live trees, and finally twenty-five structural types that differed further in the abundance of dead wood and cover of understory vegetation. Most structural types were geographically widespread but varied in age of dominant trees by vegetation zone indicating that similar structural conditions developed in environments with different biophysical setting, climate, and disturbance/successional histories. Low live biomass structural types (<25 Mg/ha) differed in live tree density and the abundance of live and dead legacies, demonstrating that the variation in early developmental stages depends on the rate of tree establishment and the nature and severity of recent disturbance. Forests in early developmental stages made up less than 20% of most vegetation zones and diverse types with live or dead legacies associated with wildfires were rare. Moderate live biomass structural types (25-99 Mg/ha) represented multiple mid, mature, and late developmental stages, some of which lack analogs in existing conceptual models of structural development such as lower density woodlands with big trees. These structural types included two that have high densities of snags indicative of recent episodes of mortality; together these made up as much as 10% of some dry vegetation zones. Several high live biomass structural types (100->300 Mg/ha) were identified and substantiated the diversity and relative dominance of mature and later developmental stages, particularly in wet vegetation zones. The relative abundance and make up of structural types varied widely by vegetation zone. Most forests in wet vegetation zones had moderate to high live biomass and were in mid and mature developmental stages, while diverse early developmental stage stages were extremely rare. Dry forests had a far greater range of variation in the relative abundance of structural types which is partially attributable to the greater range of climatic conditions they included, but also to the occurrence of recent episodes of mortality associated with wildfires and insects. In the third chapter I examined variation in tree mortality rates using a different regional inventory that occurred from the mid-1990s to the mid-2000s. I compared the distribution of rates among stands in different vegetation zones and stages of structural developmental. I developed a simple framework based on changes in live tree density and mean tree size and examined trends in structural change associated with disturbances at different levels of mortality across all stages of structural development. Most plots were within the range of "background" mortality rates reported in other studies (<1.0 %/yr) and extremely high "stand-replacing" levels of mortality (>25%/yr) were rare. Approximately 30% of plot mortality rates occurred at intermediate levels (>1%/yr and <25%/yr) as result of insects and fire, highlighting the importance of conceptualizing mortality as a continuum as opposed to just “background” or “stand-replacement” to fully represent dynamics at a regional scale. The distributions of mortality differed among many vegetation zones. Levels of mortality were primarily <2.5%/yr in western hemlock, silver fir, and mountain hemlock vegetation zones where fires were rare and insects and pathogens occurred predominantly at endemic levels. Rates were highest in subalpine forests and higher elevation grand fir and Douglas-fir forests as a result of fire and insects. Mortality rates in ponderosa pine, the hottest driest forest vegetation zone, were surprisingly low, and there was little to no mortality in plots with no evidence of disturbance. Mortality rates varied among developmental stages in all vegetation zones but few consistent patterns emerged. Levels of mortality were often lowest in early developmental stages but varied in later stages where they were lowest in wet vegetation zones and highest in subalpine and dry vegetation zones. Application of a simple framework indicated that multiple trajectories of structural change were common at levels of mortality <2.5%/yr, but structural change at higher levels was predominantly associated with a “thinning” trajectory defined by decreases in density and increases in mean tree size. Results indicated that the rate and magnitude of mortality related change during the study period varies widely across the region. Rapid change has occurred in subalpine, grand fir/white fir, Douglas-fir, and ponderosa pine vegetation zones where disturbances such as insects and fire were widespread. However, these disturbances have potentially restored some aspects of historical structure by reducing overall density and increasing the dominance of bigger trees. In western hemlock, silver fir, and mountain hemlock vegetation zones where higher levels of mortality related to disturbances were rare, wildfires have increased landscape diversity by creating diverse early successional habitats and most change was more subtle but may be manifest oevr longer periods if current trends continue. This examination of short-period mortality rates and associated structural change across a broad geographic provides context for understanding trends from localized studies and potential ecological consequences of mortality, but there is still a great deal of uncertainty as to how the effects of a changing climate and disturbance regimes will manifest themselves over longer time scales. This dissertation is one of the first field based assessments of recent forest dynamics at a regional scale. The results of both chapters, each based on a different dataset, told a similar story. The abundance of structural types in various vegetation zones estimated during the mid-2000s was consistent with the cumulative effects of tree mortality during the preceding decade. It was evident that wildfire effects and recent mortality were small relative to the regional extent of the study and have contributed to structural diversity and restoration of historic structure in stands where fire exclusion and past logging has increased total stand density and decreased the dominance of big trees. However, the rate of change and cumulative effects of recent forest dynamics varied widely by geographic location and vegetation zone and there was greater variability and uncertainty regarding the effects of mortality at smaller landscape scales where individual events like large wildfires have the potential to rapidly alter the landscape structure and composition. Assessing this variability and the scales at which trade-offs (e.g. losses of old-growth and creation of diverse early developmental stages) occur will be an important next step in understanding the cumulative ecological effects of recent wildfires and tree mortality on Pacific Northwest forests.
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8648. [Image] A framework for ecosystem management in the interior Columbia Basin and portions of the Klamath and Great Basins
Haynes, Richard W.; Graham, Russell T.; Quigley, Thomas M., tech. eds. 1996. A framework for ecosystem management in the Interior Columbia Basin including portions of the Klamath and Great Basins. Gen. ...Citation Citation
- Title:
- A framework for ecosystem management in the interior Columbia Basin and portions of the Klamath and Great Basins
- Year:
- 1996, 2005
Haynes, Richard W.; Graham, Russell T.; Quigley, Thomas M., tech. eds. 1996. A framework for ecosystem management in the Interior Columbia Basin including portions of the Klamath and Great Basins. Gen. Tech. Rep. PNW-GTR-374. Portland, OR; U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 66 p. A framework for ecosystem management is proposed. This framework assumes the purpose of ecosystem management is to maintain the integrity of ecosystems over time and space. It is based on four ecosystem principles: ecosystems are dynamic, can be viewed as hierarchies with temporal and spatial dimensions, have limits, and are relatively unpredictable. This approach recognizes that people are part of ecosystems and that stewardship must be able to resolve tough challenges including how to meet multiple demands with finite resources. The framework describes a general planning model for ecosystem management that has four iterative steps: monitoring, assessment, decision-making, and implementation. Since ecosystems cross jurisdictional lines, the implementation of the framework depends on partnerships among land managers, the scientific community, and stakeholders. It proposes that decision-making be based on information provided by the best available science and the most appropriate technologies for land management. Keywords: Ecosystem assessment, ecosystem principles, ecosystem management, planning models, management goals, risk analysis.
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"March 2005." ; "GAO-05-283."
Citation -
Internal memo between staff of the National Marine Fisheries Service dated September 27, 1996 which summarizes the issues of scientific disagreement related to the listing of three coho salmon as an endangered ...
Citation Citation
- Title:
- Scientific disagreement regarding coho salmon status under the ESA
- Author:
- Varanasi, Usha; Tillman, Michael
- Year:
- 1996, 2005
Internal memo between staff of the National Marine Fisheries Service dated September 27, 1996 which summarizes the issues of scientific disagreement related to the listing of three coho salmon as an endangered species