Search

Search Results

• 61. [Article] South Fork Alsea watershed analysis

  Citation × Citation Citation Abstract Copy Title: South Fork Alsea watershed analysis Title: South Fork Alsea watershed analysis Close

• 62. [Article] Ecology of female northern pintails during winter in the San Joaquin Valley, California

  I radio-tagged 191 Hatch-Year (HY) and After-Hatch-Year (AHY) female northern pintails (Anas acuta) in the San Joaquin Valley (SJV), California and studied their movements, habitat use and survival during ...

  Citation × Citation Citation Abstract Copy Title: Ecology of female northern pintails during winter in the San Joaquin Valley, California Author: Fleskes, Joseph P. I radio-tagged 191 Hatch-Year (HY) and After-Hatch-Year (AHY) female northern pintails (Anas acuta) in the San Joaquin Valley (SJV), California and studied their movements, habitat use and survival during August March, 1991-94. Overall, 94.3% wintered in central California; the highest percentage left during the 1991 drought. Tulare Basin and Mendota Wildlife Area (WA) pintails moved to the Grassland Ecological Area (EA) vicinity when hunting began. Of those wintering in central California, 83% went to the Sacramento Valley, most during December. AHY pintails tended to leave earliest but the effect of age varied with body condition. Loss of Tulare Basin habitat has contributed to the late-winter decline of pintails throughout the SJV. Local distribution and movements differed most among seasons, day and night periods and shoot and nonshoot days. Overall, 64% of the day and 85% of the night locations in the Grassland EA vicinity were on private wetlands. Habitat availability and use varied greatly among SJV areas and during the winter. Pintails selected shallow and avoided deepwater habitats. Swamp timothy wetlands were the most abundant and most highly selected habitat in Grassland EA and Mendota WA. In Tulare Basin, preirrigated fields were the most abundant and selected habitat during PREHUNT, but managed wetlands were most abundant and selected thereafter. Selection of watergrass wetlands during night was low in the Grassland EA vicinity but high in Mendota WA. In Tulare Basin, pintails selected preirrigated fallow and safflower fields; selection of barley-wheat fields varied greatly. The exodus of most pintails from the SJV during December implies that preferred late-winter habitats were lacking. Winter survival was lower for HY (0.67) than AHY (0.76) pintails. Survival was similar to Louisiana and Suisun Marsh but lower than in the Sacramento Valley. Hunting caused 83%, avian predators 7.6%, collisions 1%, and disease or other non-hunting factors 8.7% of the mortalities. Hunting mortality was related to fall body condition for HY but not AHY pintails. The retrieval rate for shot radio-tagged pintails was 80.3%. This study indicates that inter-related factors influenced female pintail ecology during winter in California but availability of productive habitat was especially important. Title: Ecology of female northern pintails during winter in the San Joaquin Valley, California Author: Fleskes, Joseph P. I radio-tagged 191 Hatch-Year (HY) and After-Hatch-Year (AHY) female northern pintails (Anas acuta) in the San Joaquin Valley (SJV), California and studied their movements, habitat use and survival during August March, 1991-94. Overall, 94.3% wintered in central California; the highest percentage left during the 1991 drought. Tulare Basin and Mendota Wildlife Area (WA) pintails moved to the Grassland Ecological Area (EA) vicinity when hunting began. Of those wintering in central California, 83% went to the Sacramento Valley, most during December. AHY pintails tended to leave earliest but the effect of age varied with body condition. Loss of Tulare Basin habitat has contributed to the late-winter decline of pintails throughout the SJV. Local distribution and movements differed most among seasons, day and night periods and shoot and nonshoot days. Overall, 64% of the day and 85% of the night locations in the Grassland EA vicinity were on private wetlands. Habitat availability and use varied greatly among SJV areas and during the winter. Pintails selected shallow and avoided deepwater habitats. Swamp timothy wetlands were the most abundant and most highly selected habitat in Grassland EA and Mendota WA. In Tulare Basin, preirrigated fields were the most abundant and selected habitat during PREHUNT, but managed wetlands were most abundant and selected thereafter. Selection of watergrass wetlands during night was low in the Grassland EA vicinity but high in Mendota WA. In Tulare Basin, pintails selected preirrigated fallow and safflower fields; selection of barley-wheat fields varied greatly. The exodus of most pintails from the SJV during December implies that preferred late-winter habitats were lacking. Winter survival was lower for HY (0.67) than AHY (0.76) pintails. Survival was similar to Louisiana and Suisun Marsh but lower than in the Sacramento Valley. Hunting caused 83%, avian predators 7.6%, collisions 1%, and disease or other non-hunting factors 8.7% of the mortalities. Hunting mortality was related to fall body condition for HY but not AHY pintails. The retrieval rate for shot radio-tagged pintails was 80.3%. This study indicates that inter-related factors influenced female pintail ecology during winter in California but availability of productive habitat was especially important. Close

• 63. [Article] Vegetation characterization of three contrasting riparian areas : Williamette Valley, Oregon

  Much of the native riparian vegetation of the Willamette Valley, Oregon, has been replaced with agricultural crops or invasive non-native plant species. Detailed information about current Willamette Valley ...

  Citation × Citation Citation Abstract Copy Title: Vegetation characterization of three contrasting riparian areas : Williamette Valley, Oregon Author: McAllister, Lynne S., Dwire, Kathleen A., Griffith, Stephen M. Much of the native riparian vegetation of the Willamette Valley, Oregon, has been replaced with agricultural crops or invasive non-native plant species. Detailed information about current Willamette Valley riparian vegetation is generally lacking. Plant specie composition data are useful in a variety of applications, including condition assessment, environmental monitoring and restoration planning. The objective of this study was to characterize the vegetation of three contrasting riparian sites occurring in the Willamette Valley. W determined plant species composition and abundance at a non-cultivated herbaceous site and a cultivated site, both located along Lake Creek, an intermittent stream, and at a forested site located along the Calapooia River, a perennial stream. All sites were adjacent to intensively-managed perennial ryegrass seed production fields. Crop agriculture strongly encroached on the Lake Creek sites, whereas the Calapooia site had received little encroachment from agricultural coversion. At Lake Creek, we inventoried 32 species at the non-cultivated herbaceous site and 18 species at the cultivated site, most of which were non-native. The cultivated site was dominated by wetland-adapted species in the area closest to the creek where perennial ryegrass was absent. Approximately half of the species at the non-cultivated herbaceous site were facultative upland species, and the site was dominated by introduced pasture grasses. In contrast, the 53 species inventoried at the forested site were mostly native and wetland-adapted. The forested site was dominated by Poplus balsamifera ssp, trichocarap T. & G., Pseudotsuga menziessii (Mirbel) Franco, and Acer macrophyllum Pursh, with extensive shrub and herbaceous strata. Results show a range of vegetative conditions found in riparian areas of the Willamette Valley and reflect the influence of differing hydrologic regimes and agricultural impacts. Title: Vegetation characterization of three contrasting riparian areas : Williamette Valley, Oregon Author: McAllister, Lynne S., Dwire, Kathleen A., Griffith, Stephen M. Much of the native riparian vegetation of the Willamette Valley, Oregon, has been replaced with agricultural crops or invasive non-native plant species. Detailed information about current Willamette Valley riparian vegetation is generally lacking. Plant specie composition data are useful in a variety of applications, including condition assessment, environmental monitoring and restoration planning. The objective of this study was to characterize the vegetation of three contrasting riparian sites occurring in the Willamette Valley. W determined plant species composition and abundance at a non-cultivated herbaceous site and a cultivated site, both located along Lake Creek, an intermittent stream, and at a forested site located along the Calapooia River, a perennial stream. All sites were adjacent to intensively-managed perennial ryegrass seed production fields. Crop agriculture strongly encroached on the Lake Creek sites, whereas the Calapooia site had received little encroachment from agricultural coversion. At Lake Creek, we inventoried 32 species at the non-cultivated herbaceous site and 18 species at the cultivated site, most of which were non-native. The cultivated site was dominated by wetland-adapted species in the area closest to the creek where perennial ryegrass was absent. Approximately half of the species at the non-cultivated herbaceous site were facultative upland species, and the site was dominated by introduced pasture grasses. In contrast, the 53 species inventoried at the forested site were mostly native and wetland-adapted. The forested site was dominated by Poplus balsamifera ssp, trichocarap T. & G., Pseudotsuga menziessii (Mirbel) Franco, and Acer macrophyllum Pursh, with extensive shrub and herbaceous strata. Results show a range of vegetative conditions found in riparian areas of the Willamette Valley and reflect the influence of differing hydrologic regimes and agricultural impacts. Close

• 64. [Article] End Creek - Rice Fish Habitat and Wetland Restoration Project, OWEB #204-434

  Abstract -- The summer of 2006 culminated in the successful implementation of three consecutive phases of the End Creek Restoration Project located in the northwest Grande Ronde Valley within the Grande ...

  Citation × Citation Citation Abstract Copy Title: End Creek - Rice Fish Habitat and Wetland Restoration Project, OWEB #204-434 Abstract -- The summer of 2006 culminated in the successful implementation of three consecutive phases of the End Creek Restoration Project located in the northwest Grande Ronde Valley within the Grande Ronde Subbasin of eastern Oregon. The End Creek Project complex encompasses approximately 776 acres within three contiguous private land parcels, 1.13 miles of End Creek, 1.06 miles of the South Fork Willow Creek, 0.65 miles of McDonald Creek, and several spring-fed tributaries in the Willow Creek Watershed. This 39 page report details the many aspects of this project and includes photos, figures, and references. Title: End Creek - Rice Fish Habitat and Wetland Restoration Project, OWEB #204-434 Abstract -- The summer of 2006 culminated in the successful implementation of three consecutive phases of the End Creek Restoration Project located in the northwest Grande Ronde Valley within the Grande Ronde Subbasin of eastern Oregon. The End Creek Project complex encompasses approximately 776 acres within three contiguous private land parcels, 1.13 miles of End Creek, 1.06 miles of the South Fork Willow Creek, 0.65 miles of McDonald Creek, and several spring-fed tributaries in the Willow Creek Watershed. This 39 page report details the many aspects of this project and includes photos, figures, and references. Close

• 65. [Article] Spatial and temporal movement patterns of wintering Dunlin (Calidris alpina) and Killdeer (Charadrius vociferus) in the Willamette Valley, Oregon

  Avian movement behavior provides insight on patterns of regional and local fidelity, habitat and resource requirements, the scale at which individuals perceive the landscape, and the relative influence ...

  Citation × Citation Citation Abstract Copy Title: Spatial and temporal movement patterns of wintering Dunlin (Calidris alpina) and Killdeer (Charadrius vociferus) in the Willamette Valley, Oregon Author: Sanzenbacher, Peter M. Avian movement behavior provides insight on patterns of regional and local fidelity, habitat and resource requirements, the scale at which individuals perceive the landscape, and the relative influence of the spatial array of resources. Shorebirds (suborder: Charadrii) are a diverse and mobile group of wetland associated species. Large numbers of shorebirds utilize seasonally flooded wetland habitats in the Willamette Valley of northwest Oregon; however, there is little information on fidelity and movements of birds in the region or at other inland sites. Thus, we quantified winter fidelity and movement patterns of radio-tagged Dunlin (Calidris alpina) and Killdeer (Charadrius vociferus) in the Willamette Valley in 1998-1999 and 1999-2000. Prior to field telemetry, we evaluated use of a leg-loop harness design for attachment of radio-transmitters. Comparisons between captive Western Sandpipers (Calidris mauri) fitted with a harness package and a control group indicated no significant differences in behavior. In addition, observations of wild Killdeer and Dunlin indicated prolonged harness retention and no adverse effects on behavior. Therefore, we determined that the modified harness design was a suitable method for attachment of transmitters to shorebirds. Monitoring of radio-tagged Dunlin and Killdeer indicated interspecific differences in regional fidelity and residency patterns. Dunlin exhibited a high degree of regional fidelity and in most cases remained within the Valley for the duration of the winter. In contrast, Killdeer departed the study area throughout the winter and the population segment monitored was composed of winter residents (63%), winter transients (26%) and year-round resident breeders (11%). Dunlin were highly mobile with frequent movements up to 30 km from roost sites. Among seasons, Dunlin differed significantly in distance traveled, mean distance from capture site, and home range size. All were greatest during late winter. In comparison, the scale of Killdeer movements was much smaller, with no seasonal differences in movements. Results also suggested that resident Killdeer were more sedentary than migrants during the winter months. At a local scale, individuals of both species occurred predominantly in agricultural habitats and exhibited low degrees of fidelity to specific fields, with the exception that Dunlin frequently returned to certain roost sites. On a daily basis, movements of both Dunlin and Killdeer were most pronounced during crepuscular periods. Findings provide insight on the fidelity and winter movements of shorebirds, as well provide insight as to the functional connectivity of shorebird habitats in the Willamette Valley. Title: Spatial and temporal movement patterns of wintering Dunlin (Calidris alpina) and Killdeer (Charadrius vociferus) in the Willamette Valley, Oregon Author: Sanzenbacher, Peter M. Avian movement behavior provides insight on patterns of regional and local fidelity, habitat and resource requirements, the scale at which individuals perceive the landscape, and the relative influence of the spatial array of resources. Shorebirds (suborder: Charadrii) are a diverse and mobile group of wetland associated species. Large numbers of shorebirds utilize seasonally flooded wetland habitats in the Willamette Valley of northwest Oregon; however, there is little information on fidelity and movements of birds in the region or at other inland sites. Thus, we quantified winter fidelity and movement patterns of radio-tagged Dunlin (Calidris alpina) and Killdeer (Charadrius vociferus) in the Willamette Valley in 1998-1999 and 1999-2000. Prior to field telemetry, we evaluated use of a leg-loop harness design for attachment of radio-transmitters. Comparisons between captive Western Sandpipers (Calidris mauri) fitted with a harness package and a control group indicated no significant differences in behavior. In addition, observations of wild Killdeer and Dunlin indicated prolonged harness retention and no adverse effects on behavior. Therefore, we determined that the modified harness design was a suitable method for attachment of transmitters to shorebirds. Monitoring of radio-tagged Dunlin and Killdeer indicated interspecific differences in regional fidelity and residency patterns. Dunlin exhibited a high degree of regional fidelity and in most cases remained within the Valley for the duration of the winter. In contrast, Killdeer departed the study area throughout the winter and the population segment monitored was composed of winter residents (63%), winter transients (26%) and year-round resident breeders (11%). Dunlin were highly mobile with frequent movements up to 30 km from roost sites. Among seasons, Dunlin differed significantly in distance traveled, mean distance from capture site, and home range size. All were greatest during late winter. In comparison, the scale of Killdeer movements was much smaller, with no seasonal differences in movements. Results also suggested that resident Killdeer were more sedentary than migrants during the winter months. At a local scale, individuals of both species occurred predominantly in agricultural habitats and exhibited low degrees of fidelity to specific fields, with the exception that Dunlin frequently returned to certain roost sites. On a daily basis, movements of both Dunlin and Killdeer were most pronounced during crepuscular periods. Findings provide insight on the fidelity and winter movements of shorebirds, as well provide insight as to the functional connectivity of shorebird habitats in the Willamette Valley. Close

• 66. [Article] EWEB’s Vision: Payments for Ecosystem Services through a Voluntary Incentives Program; An Innovative, Incentive-Based Approach for Preserving Water Quality in the McKenzie River Watershed

  EWEB envisions the development of an investment mechanism that makes payments for ecosystem services (PES) as a way to maintain and improve water quality within the McKenzie River Watershed, Eugene’s sole ...

  Citation × Citation Citation Abstract Copy Title: EWEB’s Vision: Payments for Ecosystem Services through a Voluntary Incentives Program; An Innovative, Incentive-Based Approach for Preserving Water Quality in the McKenzie River Watershed Author: Lurie, Sue, Toth, Nancy, Morgenstern, Karl, Duncan, Sally, Fishler, Hillary, Bennett, Drew EWEB envisions the development of an investment mechanism that makes payments for ecosystem services (PES) as a way to maintain and improve water quality within the McKenzie River Watershed, Eugene’s sole source of drinking water. The public name for this concept is the Voluntary Incentives Program. Under the envisioned Voluntary Incentives Program (VIP), EWEB will provide annual dividend payments to landowners for the valuable services their properties provide including water filtration and purification. These dividends recognize the value of the natural capital provided by these lands and their downstream benefits to the residents of Eugene. A fund with sustainable financing will be established to support the dividend payments and the infrastructure necessary to operate the Voluntary Incentives Program. Financing will come from a variety of sources but could be initially endowed through existing water funds (under existing rate structure) or another utility funding mechanism. Additional possible financing sources other than EWEB include corporations, a voter approved bond measure, development impact fees, and state and federal mitigation programs. EWEB will establish a stewardship boundary identifying riparian forests and floodplains that are eligible to enroll in the VIP. Participation is open to private landowners, local governments, and non-profit organizations that own land within the designated boundary. Based on EWEB’s preliminary analysis, an estimated 6,500 acres of riparian and floodplain areas along the McKenzie and major tributaries are eligible to enroll. Land within the stewardship boundary will need to meet a threshold in order to receive payments. This threshold will be determined by adapting existing riparian forest and wetland habitat standards and definitions from NRCS, USFS, Defenders of Wildlife and other entities to establish the criteria for participation in the VIP. Appropriate infrastructure is essential to implement and run the incentives program: critical tasks include managing the fund, making payments to VIP participants, assessing the quality of land enrolled, negotiating agreements, monitoring properties and verifying compliance, and educating and communicating with the community. The VIP will rely upon a coalition of existing organizations, which will form a watershed investment district (WID), to provide this critical infrastructure, without which successful implementation of the VIP is highly unlikely. Title: EWEB’s Vision: Payments for Ecosystem Services through a Voluntary Incentives Program; An Innovative, Incentive-Based Approach for Preserving Water Quality in the McKenzie River Watershed Author: Lurie, Sue, Toth, Nancy, Morgenstern, Karl, Duncan, Sally, Fishler, Hillary, Bennett, Drew EWEB envisions the development of an investment mechanism that makes payments for ecosystem services (PES) as a way to maintain and improve water quality within the McKenzie River Watershed, Eugene’s sole source of drinking water. The public name for this concept is the Voluntary Incentives Program. Under the envisioned Voluntary Incentives Program (VIP), EWEB will provide annual dividend payments to landowners for the valuable services their properties provide including water filtration and purification. These dividends recognize the value of the natural capital provided by these lands and their downstream benefits to the residents of Eugene. A fund with sustainable financing will be established to support the dividend payments and the infrastructure necessary to operate the Voluntary Incentives Program. Financing will come from a variety of sources but could be initially endowed through existing water funds (under existing rate structure) or another utility funding mechanism. Additional possible financing sources other than EWEB include corporations, a voter approved bond measure, development impact fees, and state and federal mitigation programs. EWEB will establish a stewardship boundary identifying riparian forests and floodplains that are eligible to enroll in the VIP. Participation is open to private landowners, local governments, and non-profit organizations that own land within the designated boundary. Based on EWEB’s preliminary analysis, an estimated 6,500 acres of riparian and floodplain areas along the McKenzie and major tributaries are eligible to enroll. Land within the stewardship boundary will need to meet a threshold in order to receive payments. This threshold will be determined by adapting existing riparian forest and wetland habitat standards and definitions from NRCS, USFS, Defenders of Wildlife and other entities to establish the criteria for participation in the VIP. Appropriate infrastructure is essential to implement and run the incentives program: critical tasks include managing the fund, making payments to VIP participants, assessing the quality of land enrolled, negotiating agreements, monitoring properties and verifying compliance, and educating and communicating with the community. The VIP will rely upon a coalition of existing organizations, which will form a watershed investment district (WID), to provide this critical infrastructure, without which successful implementation of the VIP is highly unlikely. Close

• 67. [Article] Understanding natural wetlands

  Published January 1991. Reviewed December 2014. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extensi...

  Citation × Citation Citation Abstract Copy Title: Understanding natural wetlands Author: Moore, James A. (James Allan), 1939-, Oregon State University. Extension Service, Smith, Dawn Published January 1991. Reviewed December 2014. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog Title: Understanding natural wetlands Author: Moore, James A. (James Allan), 1939-, Oregon State University. Extension Service, Smith, Dawn Published January 1991. Reviewed December 2014. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog Close

• 68. [Article] Riparian and wetland vegetation of central and eastern Oregon

  The structure and components of riparian areas influence the rate, amount, and timing of water, nutrients, organic debris, and inorganic materials that enter streams and rivers. The energy of floodwaters ...

  Citation × Citation Citation Abstract Copy Title: Riparian and wetland vegetation of central and eastern Oregon Author: Institute for Natural Resources, Kovalchik, Bernard L., Kerr, Marie Jeannette James, 1968-, Oregon Natural Heritage Information Center, Crowe, Elizabeth A. (Elizabeth Ann), 1963- The structure and components of riparian areas influence the rate, amount, and timing of water, nutrients, organic debris, and inorganic materials that enter streams and rivers. The energy of floodwaters and their ultimate volume, timing and erosive power is influenced by the soils, vegetation and geomorphology of fluvial surfaces within valley bottoms. Decades of intensive use of riparian areas and other wetlands in central and eastern Oregon have caused substantial degradation of their ecological structure, composition and function. Rehabilitation, restoration and monitoring of wetland ecosystems is currently a high priority for many land management agencies and landowners. In order to improve conditions in these habitats, an understanding of wetland ecosystems is necessary. Title: Riparian and wetland vegetation of central and eastern Oregon Author: Institute for Natural Resources, Kovalchik, Bernard L., Kerr, Marie Jeannette James, 1968-, Oregon Natural Heritage Information Center, Crowe, Elizabeth A. (Elizabeth Ann), 1963- The structure and components of riparian areas influence the rate, amount, and timing of water, nutrients, organic debris, and inorganic materials that enter streams and rivers. The energy of floodwaters and their ultimate volume, timing and erosive power is influenced by the soils, vegetation and geomorphology of fluvial surfaces within valley bottoms. Decades of intensive use of riparian areas and other wetlands in central and eastern Oregon have caused substantial degradation of their ecological structure, composition and function. Rehabilitation, restoration and monitoring of wetland ecosystems is currently a high priority for many land management agencies and landowners. In order to improve conditions in these habitats, an understanding of wetland ecosystems is necessary. Close

• 69. [Article] Texture analysis riparian coniferous forest ADAR imagery to identify potential ecological indicators for monitoring

  The Airborne Data Acquisition and Registration (ADAR) remote sensing system captured one-meter resolution imagery of 25 different riparian sites in drift Creek Basin of coastal northwestern Oregon, USA. ...

  Citation × Citation Citation Abstract Copy Title: Texture analysis riparian coniferous forest ADAR imagery to identify potential ecological indicators for monitoring Author: Fiorella, M., Barker, Jerry R., Ringold, P.L., Bradshaw, Gay, Bollman, Mike The Airborne Data Acquisition and Registration (ADAR) remote sensing system captured one-meter resolution imagery of 25 different riparian sites in drift Creek Basin of coastal northwestern Oregon, USA. The multispectral, digital data characterized riparian areas with the intent to develop ecological indicators for long-term monitoring. Title: Texture analysis riparian coniferous forest ADAR imagery to identify potential ecological indicators for monitoring Author: Fiorella, M., Barker, Jerry R., Ringold, P.L., Bradshaw, Gay, Bollman, Mike The Airborne Data Acquisition and Registration (ADAR) remote sensing system captured one-meter resolution imagery of 25 different riparian sites in drift Creek Basin of coastal northwestern Oregon, USA. The multispectral, digital data characterized riparian areas with the intent to develop ecological indicators for long-term monitoring. Close

• 70. [Article] Biological opinion: Canby Ferry shoreside improvements project, Mountain Road, Clackamas County

  Citation × Citation Citation Abstract Copy Title: Biological opinion: Canby Ferry shoreside improvements project, Mountain Road, Clackamas County Author: U.S. Federal Highway Administration, National Marine Fisheries Service, Northwest Region Title: Biological opinion: Canby Ferry shoreside improvements project, Mountain Road, Clackamas County Author: U.S. Federal Highway Administration, National Marine Fisheries Service, Northwest Region Close