Search

Search Results

• 111. [Article] McKenzie River focus watershed coordination : year end report 2000

  This report summarizes accomplishments of the McKenzie River Focus Watershed Council (MWC) in the areas of coordination and administration during Fiscal Year 2000. Coordination and administration consist ...

  Citation × Citation Citation Abstract Copy Title: McKenzie River focus watershed coordination : year end report 2000 Author: Thrailkil, Jim This report summarizes accomplishments of the McKenzie River Focus Watershed Council (MWC) in the areas of coordination and administration during Fiscal Year 2000. Coordination and administration consist of prioritization and planning for projects; project management and implementation; procurement of funding for long-term support of the Council; and watershed education/outreach program for residents and local schools. Key accomplishments in the area of project planning include coordinating: monthly Council and executive committee meetings; staffing the Upper Willamette Spring Chinook Working Group; staffing the water quality technical committee; and guiding education and stewardship projects. Key accomplishments in the area of project management include the completion of the McKenzie-Willamette Confluence Assessment; securing funds for project planning in the confluence area; near completion of the BPA funded McKenzie sub-basin assessment; development of a framework for a McKenzie Watershed Conservation Strategy; an evaluation of Council’s monitoring programs - ambient water quality, storm-event water quality, Tier III water quality, and macroinvertebrate monitoring. The Council, in cooperation with the McKenzie River Cooperative, completed habitat enhancements in the Gate Creek and Deer Creek sub-watersheds. This partnership recently submitted Bring Back the Natives grant for initiation of projects in other McKenzie tributaries. The Council will also be working with a local business to develop a river-side riparian enhancement and native landscaping project on the lodge grounds. This will serve as a demonstration project for blending fish and wildlife habitat concerns with maintaining grounds for business opportunities. Accomplishments in the area of procurement of funding included developing the FY2000 Scope of Work and budget for approval by the Council and BPA; providing quarterly budget and work program progress reports to the Council; and securing additional funding from Council partner organizations and foundations. Highlights in the area of watershed education/outreach include the MWC’s lead role in convening the Watershed Education Network for teachers as part of its educational mission; production of newsletters and brochures; and coordination of media coverage of watershed-related issues. MWC completed all tasks outlined in the FY2000 Scope of Work with the following staff: Watershed Coordinator (1.0 FTE), Project Coordinator (.25 FTE), and Education Coordinator (0.5 FTE). Coordination of these activities by MWC improves resource stewardship and protects fish and wildlife habitat through increased collaboration among Federal, state, and local government agencies, and landowners within the watershed. Increasing awareness and expanding knowledge affects behavior positively and promotes attitudes that encourage watershed stewardship. During Fiscal Year 2001, MWC intends to focus on an Implementation Strategy based on the McKenzie sub-basin assessment results; implementation of projects recommended from the McKenzie-Willamette confluence assessment; and increasing its presence at the local level through contact with watershed residents and groups. Title: McKenzie River focus watershed coordination : year end report 2000 Author: Thrailkil, Jim This report summarizes accomplishments of the McKenzie River Focus Watershed Council (MWC) in the areas of coordination and administration during Fiscal Year 2000. Coordination and administration consist of prioritization and planning for projects; project management and implementation; procurement of funding for long-term support of the Council; and watershed education/outreach program for residents and local schools. Key accomplishments in the area of project planning include coordinating: monthly Council and executive committee meetings; staffing the Upper Willamette Spring Chinook Working Group; staffing the water quality technical committee; and guiding education and stewardship projects. Key accomplishments in the area of project management include the completion of the McKenzie-Willamette Confluence Assessment; securing funds for project planning in the confluence area; near completion of the BPA funded McKenzie sub-basin assessment; development of a framework for a McKenzie Watershed Conservation Strategy; an evaluation of Council’s monitoring programs - ambient water quality, storm-event water quality, Tier III water quality, and macroinvertebrate monitoring. The Council, in cooperation with the McKenzie River Cooperative, completed habitat enhancements in the Gate Creek and Deer Creek sub-watersheds. This partnership recently submitted Bring Back the Natives grant for initiation of projects in other McKenzie tributaries. The Council will also be working with a local business to develop a river-side riparian enhancement and native landscaping project on the lodge grounds. This will serve as a demonstration project for blending fish and wildlife habitat concerns with maintaining grounds for business opportunities. Accomplishments in the area of procurement of funding included developing the FY2000 Scope of Work and budget for approval by the Council and BPA; providing quarterly budget and work program progress reports to the Council; and securing additional funding from Council partner organizations and foundations. Highlights in the area of watershed education/outreach include the MWC’s lead role in convening the Watershed Education Network for teachers as part of its educational mission; production of newsletters and brochures; and coordination of media coverage of watershed-related issues. MWC completed all tasks outlined in the FY2000 Scope of Work with the following staff: Watershed Coordinator (1.0 FTE), Project Coordinator (.25 FTE), and Education Coordinator (0.5 FTE). Coordination of these activities by MWC improves resource stewardship and protects fish and wildlife habitat through increased collaboration among Federal, state, and local government agencies, and landowners within the watershed. Increasing awareness and expanding knowledge affects behavior positively and promotes attitudes that encourage watershed stewardship. During Fiscal Year 2001, MWC intends to focus on an Implementation Strategy based on the McKenzie sub-basin assessment results; implementation of projects recommended from the McKenzie-Willamette confluence assessment; and increasing its presence at the local level through contact with watershed residents and groups. Close

• 112. [Article] Nest Success and Cause-Specific Nest Failure of Grassland Passerines Breeding in Prairie Grazed by Livestock

  This is the publisher’s final pdf. The article is copyrighted by The Wildlife Society and published by John Wiley & Sons, Inc. It can be found at: http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291937-2817. ...

  Citation × Citation Citation Abstract Copy Title: Nest Success and Cause-Specific Nest Failure of Grassland Passerines Breeding in Prairie Grazed by Livestock Author: Etterson, Matthew A., Kennedy, Patricia L., Johnson, Tracey N. This is the publisher’s final pdf. The article is copyrighted by The Wildlife Society and published by John Wiley & Sons, Inc. It can be found at: http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291937-2817. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. Title: Nest Success and Cause-Specific Nest Failure of Grassland Passerines Breeding in Prairie Grazed by Livestock Author: Etterson, Matthew A., Kennedy, Patricia L., Johnson, Tracey N. This is the publisher’s final pdf. The article is copyrighted by The Wildlife Society and published by John Wiley & Sons, Inc. It can be found at: http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291937-2817. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. Close

• 113. [Article] Spatial and temporal dynamics of anthropogenically influenced forests of the Brazilian Amazon

  The Amazon Tropical Rain Forest is the largest tropical rain forest system, comprising approximately 65% of such forests on earth. Since the 1960's, human populations in the Brazilian Amazon have increased ...

  Citation × Citation Citation Abstract Copy Title: Spatial and temporal dynamics of anthropogenically influenced forests of the Brazilian Amazon Author: Bergen, Scott The Amazon Tropical Rain Forest is the largest tropical rain forest system, comprising approximately 65% of such forests on earth. Since the 1960's, human populations in the Brazilian Amazon have increased from two to over 20 million. Concomitant urbanization, forest conversion, and economic dependence on resource extraction have exerted severe demands on these fragile ecosystems. Its status as a global carbon source and sink and its unique biodiversity compels study of the Amazon and the dramatic changes sustained to optimize conservation strategies and ameliorate loss. While the overall effects of deforestation are well documented, little is known about the spatio-temporal interactions between forest dynamics and anthropogenic disturbance. As part of a collaborative NASA-Smithsonian Institute project, the present research focuses on the analysis and modeling of spatio-temporal forest dynamics in the Amazon across scales. The first analysis indicates that secondary forest tree species richness is significantly influenced by proximity to large forest tracts containing frugivorous fauna. These results underscore the necessity of conserving large tracts and the consideration of spatial design for adequate preservation of biodiversity. Methods developed in the second analysis demonstrate that while deforestation devastates biodiversity, secondary forests may contribute to the attenuation of greenhouse gas concentrations. However, this carbon tracking process is revealed to be more complex than previously assumed. Land tenure dynamics and heterogeneity preclude the use of simple static models. These results imply that modeling the world's largest rain forests effects on global greenhouse gas concentrations is highly uncertain and must be evaluated cautiously. The final analysis evaluates the diverse effects of specific large-scale development projects on forest integrity currently being planned. Riverside deforestation and road upgrades have the highest potential for effecting irreversible environmental damage. Protected forests and indigenous lands comprise 30% of the Brazilian Legal Amazon and have the potential to prevent the degradation of 464,151 km² of mature forest. However, political and economic pressures on indigenous peoples threaten to destabilize land tenure and land-use practices. Urgent efforts need to be directed to develop long-term and large-scale planning of Amazon land-use that takes such complexity into consideration. Title: Spatial and temporal dynamics of anthropogenically influenced forests of the Brazilian Amazon Author: Bergen, Scott The Amazon Tropical Rain Forest is the largest tropical rain forest system, comprising approximately 65% of such forests on earth. Since the 1960's, human populations in the Brazilian Amazon have increased from two to over 20 million. Concomitant urbanization, forest conversion, and economic dependence on resource extraction have exerted severe demands on these fragile ecosystems. Its status as a global carbon source and sink and its unique biodiversity compels study of the Amazon and the dramatic changes sustained to optimize conservation strategies and ameliorate loss. While the overall effects of deforestation are well documented, little is known about the spatio-temporal interactions between forest dynamics and anthropogenic disturbance. As part of a collaborative NASA-Smithsonian Institute project, the present research focuses on the analysis and modeling of spatio-temporal forest dynamics in the Amazon across scales. The first analysis indicates that secondary forest tree species richness is significantly influenced by proximity to large forest tracts containing frugivorous fauna. These results underscore the necessity of conserving large tracts and the consideration of spatial design for adequate preservation of biodiversity. Methods developed in the second analysis demonstrate that while deforestation devastates biodiversity, secondary forests may contribute to the attenuation of greenhouse gas concentrations. However, this carbon tracking process is revealed to be more complex than previously assumed. Land tenure dynamics and heterogeneity preclude the use of simple static models. These results imply that modeling the world's largest rain forests effects on global greenhouse gas concentrations is highly uncertain and must be evaluated cautiously. The final analysis evaluates the diverse effects of specific large-scale development projects on forest integrity currently being planned. Riverside deforestation and road upgrades have the highest potential for effecting irreversible environmental damage. Protected forests and indigenous lands comprise 30% of the Brazilian Legal Amazon and have the potential to prevent the degradation of 464,151 km² of mature forest. However, political and economic pressures on indigenous peoples threaten to destabilize land tenure and land-use practices. Urgent efforts need to be directed to develop long-term and large-scale planning of Amazon land-use that takes such complexity into consideration. Close

• 114. [Article] Demographic response of northern spotted owls to barred owl removal

  To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The article is copyrighted by the Wildlife Society ...

  Citation × Citation Citation Abstract Copy Title: Demographic response of northern spotted owls to barred owl removal Author: Diller, Lowell V., Schwarz, Carl J., Early, Desiree A., Lamphear, David W., McDonald, Trent L., Hamm, Keith A., Yackulic, Charles B., Dugger, Katie M., Carlson, Peter C. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The article is copyrighted by the Wildlife Society and published by John Wiley & Sons, Inc. It can be found at: http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291937-2817 Title: Demographic response of northern spotted owls to barred owl removal Author: Diller, Lowell V., Schwarz, Carl J., Early, Desiree A., Lamphear, David W., McDonald, Trent L., Hamm, Keith A., Yackulic, Charles B., Dugger, Katie M., Carlson, Peter C. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The article is copyrighted by the Wildlife Society and published by John Wiley & Sons, Inc. It can be found at: http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291937-2817 Close

• 115. [Article] Genetic variation and mating system of ponderosa pine in the Willamette Valley of Oregon

  The population genetic structure of ponderosa pine (Pinus ponderosa Dougi.) in the Willamette Valley of Oregon was investigated. Cones were collected from native stands of ponderosa pine from the Willamette ...

  Citation × Citation Citation Abstract Copy Title: Genetic variation and mating system of ponderosa pine in the Willamette Valley of Oregon Author: Gooding, Geoffrey David The population genetic structure of ponderosa pine (Pinus ponderosa Dougi.) in the Willamette Valley of Oregon was investigated. Cones were collected from native stands of ponderosa pine from the Willamette Valley, eastern Oregon, southwest Oregon and the Puget Sound Basin of Washington. Seeds were subjected to isozyme analysis of 12 enzyme systems controlled by 20 different loci. Population genetic parameters for progeny, parent trees and pollen were estimated from isozyme data using BIOSYS-2, a population genetic statistical software package. For progeny data, total gene diversity (HT) was 0.249; average genic diversity within stands (Hs) was 0.231; average genic diversity among stands (DST) was 0.017; the proportion of total genic diversity due to differences among stands (GST) was 0.067. Based on gene diversity statistics and genetic distances, stands of Willamette Valley ponderosa pine do not differ substantially from one another or from other populations of ponderosa pine in Washington and Oregon. These results suggest that protection of the Willamette Valley population can be accomplished by conserving a large number of individuals in a few large stands or many small stands. Multilocus and single-locus estimates of outcrossing rate were determined for six stands within the Willamette Valley. Outcrossing rates were estimated for seven polymorphic loci using MLTR, a mating system analysis software package. Estimates of multilocus outcrossing for these stands (mean 0.642; range 0.365 to 0.879) were substantially lower than estimates previously reported for other populations of ponderosa pine, other pine species, and other species in the family Pinaceae. No significant difference was detected among stands in outcrossing rate. The high level of inbreeding observed in this population could be attributable to population fragmentation due to human activities, or to reduced levels of pollen production in this population compared to other populations of ponderosa pine. Genetic conservation strategies for this population should include the protection of the large native stands that remain and the use of local, adapted sources for afforestation. Management of pollen in a seed orchard should improve the genetic quality of seed over wild stand seed by reducing inbreeding levels. Title: Genetic variation and mating system of ponderosa pine in the Willamette Valley of Oregon Author: Gooding, Geoffrey David The population genetic structure of ponderosa pine (Pinus ponderosa Dougi.) in the Willamette Valley of Oregon was investigated. Cones were collected from native stands of ponderosa pine from the Willamette Valley, eastern Oregon, southwest Oregon and the Puget Sound Basin of Washington. Seeds were subjected to isozyme analysis of 12 enzyme systems controlled by 20 different loci. Population genetic parameters for progeny, parent trees and pollen were estimated from isozyme data using BIOSYS-2, a population genetic statistical software package. For progeny data, total gene diversity (HT) was 0.249; average genic diversity within stands (Hs) was 0.231; average genic diversity among stands (DST) was 0.017; the proportion of total genic diversity due to differences among stands (GST) was 0.067. Based on gene diversity statistics and genetic distances, stands of Willamette Valley ponderosa pine do not differ substantially from one another or from other populations of ponderosa pine in Washington and Oregon. These results suggest that protection of the Willamette Valley population can be accomplished by conserving a large number of individuals in a few large stands or many small stands. Multilocus and single-locus estimates of outcrossing rate were determined for six stands within the Willamette Valley. Outcrossing rates were estimated for seven polymorphic loci using MLTR, a mating system analysis software package. Estimates of multilocus outcrossing for these stands (mean 0.642; range 0.365 to 0.879) were substantially lower than estimates previously reported for other populations of ponderosa pine, other pine species, and other species in the family Pinaceae. No significant difference was detected among stands in outcrossing rate. The high level of inbreeding observed in this population could be attributable to population fragmentation due to human activities, or to reduced levels of pollen production in this population compared to other populations of ponderosa pine. Genetic conservation strategies for this population should include the protection of the large native stands that remain and the use of local, adapted sources for afforestation. Management of pollen in a seed orchard should improve the genetic quality of seed over wild stand seed by reducing inbreeding levels. Close

• 116. [Article] Will wetlands restoration plans today still be effective tomorrow? Evaluation of performance of potential wetlands for peak flow reduction in future climate scenarios in the Eagle Creek Watershed, IN

  Global climate change is expected to exaggerate the severity of floods and droughts and increase the frequency of extreme streamflow events in the Midwestern United States. Managing these projected impacts ...

  Citation × Citation Citation Abstract Copy Title: Will wetlands restoration plans today still be effective tomorrow? Evaluation of performance of potential wetlands for peak flow reduction in future climate scenarios in the Eagle Creek Watershed, IN Author: Walters, Kelli M. Global climate change is expected to exaggerate the severity of floods and droughts and increase the frequency of extreme streamflow events in the Midwestern United States. Managing these projected impacts poses a major challenge for water resources, conservation, and land use management. Wetlands have been considered as a conservation strategy and work to increase the capacity of watersheds by storing runoff upstream. The implementation of wetlands, especially in tile-drained agricultural watersheds, can reduce peak flows and help mitigate the anticipated impacts of climate change. The goal of this study was to evaluate the long-term performance of wetlands to reduce peak flows in future climate scenarios in the Eagle Creek Watershed in Indiana, as well as to establish a methodology to incorporate climate change into hydrological models to conduct better long-term land management studies and decisions. The Soil and Water Assessment Tool (SWAT) model was forced with bias corrected climate projections from the North American Regional Climate Change Assessment Program (NARCCAP) to evaluate the impacts of climate change on watershed hydrology and the ability of wetlands to reduce peak flows. Long-term monthly streamflow results predicted a slight increase in streamflow in the winter and a slight decrease in the summer from the past (1971-2000) to future (2041-2070) time periods. About half of the climate realizations produced an increase in the Q05 (5% exceedance flow) value and half a decrease, but all predictions agreed that high flow events will increase in frequency in the winter and decrease in the spring and summer. No-flow events, although found to be over-predicted by the hydrological model, showed an increase from the past to the future for all climate realizations. Results from the wetland analysis showed that if all potential wetlands identified in a previous study are installed in the watershed, maximum peak flow reductions of around 20-50 m³/s for the past and future, as well as decreased frequency of extreme events, can be seen. Wetlands proved to be a robust solution for peak flow reduction, producing consistent reductions across all climate projections for both the past and future time periods. Title: Will wetlands restoration plans today still be effective tomorrow? Evaluation of performance of potential wetlands for peak flow reduction in future climate scenarios in the Eagle Creek Watershed, IN Author: Walters, Kelli M. Global climate change is expected to exaggerate the severity of floods and droughts and increase the frequency of extreme streamflow events in the Midwestern United States. Managing these projected impacts poses a major challenge for water resources, conservation, and land use management. Wetlands have been considered as a conservation strategy and work to increase the capacity of watersheds by storing runoff upstream. The implementation of wetlands, especially in tile-drained agricultural watersheds, can reduce peak flows and help mitigate the anticipated impacts of climate change. The goal of this study was to evaluate the long-term performance of wetlands to reduce peak flows in future climate scenarios in the Eagle Creek Watershed in Indiana, as well as to establish a methodology to incorporate climate change into hydrological models to conduct better long-term land management studies and decisions. The Soil and Water Assessment Tool (SWAT) model was forced with bias corrected climate projections from the North American Regional Climate Change Assessment Program (NARCCAP) to evaluate the impacts of climate change on watershed hydrology and the ability of wetlands to reduce peak flows. Long-term monthly streamflow results predicted a slight increase in streamflow in the winter and a slight decrease in the summer from the past (1971-2000) to future (2041-2070) time periods. About half of the climate realizations produced an increase in the Q05 (5% exceedance flow) value and half a decrease, but all predictions agreed that high flow events will increase in frequency in the winter and decrease in the spring and summer. No-flow events, although found to be over-predicted by the hydrological model, showed an increase from the past to the future for all climate realizations. Results from the wetland analysis showed that if all potential wetlands identified in a previous study are installed in the watershed, maximum peak flow reductions of around 20-50 m³/s for the past and future, as well as decreased frequency of extreme events, can be seen. Wetlands proved to be a robust solution for peak flow reduction, producing consistent reductions across all climate projections for both the past and future time periods. Close

• 117. [Image] Klamath Falls Resource Area record of decision and resource management plan and rangeland program summary (Map Packet)

  	"BLM/OR/WA/PL-95/022+1792"--P. [2] of cover ; Includes illustrations and maps ; "The resource management plan addresses resource management on approximately 212,000 acres of federal land and 21,000 acres ...
  	Citation × Citation Citation Abstract Copy Title: Klamath Falls Resource Area record of decision and resource management plan and rangeland program summary (Map Packet) Author: United States. Bureau of Land Management. Klamath Falls Resource Area Year: 1995, 2004, 2003 "BLM/OR/WA/PL-95/022+1792"--P. [2] of cover ; Includes illustrations and maps ; "The resource management plan addresses resource management on approximately 212,000 acres of federal land and 21,000 acres of reserved mineral estate administered by the BLM. The lands and mineral estate are all located within Klamath County, Oregon. The approved resource management plan responds to the need for a healthy forest ecosystem with habitat that will contribute toward and support populations of native species, particularly those associated with late successional and old growth forests. It also responds to the need for a sustainable supply of timber, other forest products, recreation, and livestock grazing that will help maintain the stability of local and regional economies, and contribute valuable resources to the national economy on a predictable and long-term basis. As guided by the April 1994 interagency record of decision, BLM-administered lands are primarily allocated to Riparian Reserves, Late-Successional/District Designated Reserves, and Matrix (General Forest Management Areas). An Aquatic Conservation Strategy will be applied to all lands and waters under BLM administration. Major land and resource allocations of the approved resource management plan are displayed in Table R-1 found at the end of this record of decision"--P. [10]. Title: Klamath Falls Resource Area record of decision and resource management plan and rangeland program summary (Map Packet) Author: United States. Bureau of Land Management. Klamath Falls Resource Area Year: 1995, 2004, 2003 "BLM/OR/WA/PL-95/022+1792"--P. [2] of cover ; Includes illustrations and maps ; "The resource management plan addresses resource management on approximately 212,000 acres of federal land and 21,000 acres of reserved mineral estate administered by the BLM. The lands and mineral estate are all located within Klamath County, Oregon. The approved resource management plan responds to the need for a healthy forest ecosystem with habitat that will contribute toward and support populations of native species, particularly those associated with late successional and old growth forests. It also responds to the need for a sustainable supply of timber, other forest products, recreation, and livestock grazing that will help maintain the stability of local and regional economies, and contribute valuable resources to the national economy on a predictable and long-term basis. As guided by the April 1994 interagency record of decision, BLM-administered lands are primarily allocated to Riparian Reserves, Late-Successional/District Designated Reserves, and Matrix (General Forest Management Areas). An Aquatic Conservation Strategy will be applied to all lands and waters under BLM administration. Major land and resource allocations of the approved resource management plan are displayed in Table R-1 found at the end of this record of decision"--P. [10]. Close

• 118. [Image] Klamath Falls Resource Area record of decision and resource management plan and rangeland program summary

  	"BLM/OR/WA/PL-95/022+1792"--P. [2] of cover ; Includes illustrations and maps ; "The resource management plan addresses resource management on approximately 212,000 acres of federal land and 21,000 acres ...
  	Citation × Citation Citation Abstract Copy Title: Klamath Falls Resource Area record of decision and resource management plan and rangeland program summary Author: United States. Bureau of Land Management. Klamath Falls Resource Area Year: 1995, 2004, 2003 "BLM/OR/WA/PL-95/022+1792"--P. [2] of cover ; Includes illustrations and maps ; "The resource management plan addresses resource management on approximately 212,000 acres of federal land and 21,000 acres of reserved mineral estate administered by the BLM. The lands and mineral estate are all located within Klamath County, Oregon. The approved resource management plan responds to the need for a healthy forest ecosystem with habitat that will contribute toward and support populations of native species, particularly those associated with late successional and old growth forests. It also responds to the need for a sustainable supply of timber, other forest products, recreation, and livestock grazing that will help maintain the stability of local and regional economies, and contribute valuable resources to the national economy on a predictable and long-term basis. As guided by the April 1994 interagency record of decision, BLM-administered lands are primarily allocated to Riparian Reserves, Late-Successional/District Designated Reserves, and Matrix (General Forest Management Areas). An Aquatic Conservation Strategy will be applied to all lands and waters under BLM administration. Major land and resource allocations of the approved resource management plan are displayed in Table R-1 found at the end of this record of decision"--P. [10]. Title: Klamath Falls Resource Area record of decision and resource management plan and rangeland program summary Author: United States. Bureau of Land Management. Klamath Falls Resource Area Year: 1995, 2004, 2003 "BLM/OR/WA/PL-95/022+1792"--P. [2] of cover ; Includes illustrations and maps ; "The resource management plan addresses resource management on approximately 212,000 acres of federal land and 21,000 acres of reserved mineral estate administered by the BLM. The lands and mineral estate are all located within Klamath County, Oregon. The approved resource management plan responds to the need for a healthy forest ecosystem with habitat that will contribute toward and support populations of native species, particularly those associated with late successional and old growth forests. It also responds to the need for a sustainable supply of timber, other forest products, recreation, and livestock grazing that will help maintain the stability of local and regional economies, and contribute valuable resources to the national economy on a predictable and long-term basis. As guided by the April 1994 interagency record of decision, BLM-administered lands are primarily allocated to Riparian Reserves, Late-Successional/District Designated Reserves, and Matrix (General Forest Management Areas). An Aquatic Conservation Strategy will be applied to all lands and waters under BLM administration. Major land and resource allocations of the approved resource management plan are displayed in Table R-1 found at the end of this record of decision"--P. [10]. Close

• 119. [Article] Regional gradient analysis and spatial pattern of woody plant communities in Oregon

  Knowledge of regional-scale patterns of plant community structure and controlling factors is largely qualitative and based on numerous local studies. Data from a subsample of 10,000 field plots were used ...

  Citation × Citation Citation Abstract Copy Title: Regional gradient analysis and spatial pattern of woody plant communities in Oregon Author: Ohmann, Janet L. Knowledge of regional-scale patterns of plant community structure and controlling factors is largely qualitative and based on numerous local studies. Data from a subsample of 10,000 field plots were used to quantify and map compositional gradients of woody plant communities across Oregon forests. Canonical correspondence analyses explained 9-14% of the total species variation at three geographic scales. Climate contributed most to total variance explained (44-58%), followed by geology (6-16%), disturbance (7-13%), and topography (4- 8%). The dominant compositional gradient was associated with climate, from the lower elevation, moderate, maritime climate of the coast to the higher elevation, drier, continental climate of the interior. The second canonical axis followed a gradient from the warm, dry growing seasons of the interior valleys and eastern Cascades, to cooler, wetter mountainous areas. Only those parent materials that present extreme growing conditions, primarily ultramafic soils, were significant at the regional level. Ecological relationships differed substantially among subregions within the state. Except for topography, which contributed more to explained variation at finer geographic scales, ecological differences among subregions overshadowed effects of geographic extent. Topographic effects were stronger and beta diversity greater in eastern Oregon, where moisture is more limiting for plant growth, and weakest near the coast where climate is more favorable. The secondary importance of topography, disturbance, and substrate can be attributed to their influence on relative abundances of species within a local area, rather than on species presence or absence within broader regions. Community structure varied at a finer spatial scale in eastern than in western Oregon, and species turnover along gradients was greater for shrubs than trees. Amount of unexplained variation in the species data was high but not atypical of gradient analyses. Yet spatial structure in the species data that was uncorrelated with explanatory factors suggests potential to improve the canonical correspondence analysis models, particularly in eastern Oregon. Study findings have implications for considering biological diversity in regional conservation strategies, in planning for global climate change, and in the design of regional inventory and monitoring programs. Title: Regional gradient analysis and spatial pattern of woody plant communities in Oregon Author: Ohmann, Janet L. Knowledge of regional-scale patterns of plant community structure and controlling factors is largely qualitative and based on numerous local studies. Data from a subsample of 10,000 field plots were used to quantify and map compositional gradients of woody plant communities across Oregon forests. Canonical correspondence analyses explained 9-14% of the total species variation at three geographic scales. Climate contributed most to total variance explained (44-58%), followed by geology (6-16%), disturbance (7-13%), and topography (4- 8%). The dominant compositional gradient was associated with climate, from the lower elevation, moderate, maritime climate of the coast to the higher elevation, drier, continental climate of the interior. The second canonical axis followed a gradient from the warm, dry growing seasons of the interior valleys and eastern Cascades, to cooler, wetter mountainous areas. Only those parent materials that present extreme growing conditions, primarily ultramafic soils, were significant at the regional level. Ecological relationships differed substantially among subregions within the state. Except for topography, which contributed more to explained variation at finer geographic scales, ecological differences among subregions overshadowed effects of geographic extent. Topographic effects were stronger and beta diversity greater in eastern Oregon, where moisture is more limiting for plant growth, and weakest near the coast where climate is more favorable. The secondary importance of topography, disturbance, and substrate can be attributed to their influence on relative abundances of species within a local area, rather than on species presence or absence within broader regions. Community structure varied at a finer spatial scale in eastern than in western Oregon, and species turnover along gradients was greater for shrubs than trees. Amount of unexplained variation in the species data was high but not atypical of gradient analyses. Yet spatial structure in the species data that was uncorrelated with explanatory factors suggests potential to improve the canonical correspondence analysis models, particularly in eastern Oregon. Study findings have implications for considering biological diversity in regional conservation strategies, in planning for global climate change, and in the design of regional inventory and monitoring programs. Close

• 120. [Article] Biological control of spider mites by the predatory mite Neoseiulus fallacis (Acari: Phytoseiidae) in ornamental nursery systems

  We identified and evaluated a phytoseiid predator as a biological control agent of multiple spider mites pests that occur in ornamental nurseries. When comparing species, Neoseiulus fallacis (Garman) had ...

  Citation × Citation Citation Abstract Copy Title: Biological control of spider mites by the predatory mite Neoseiulus fallacis (Acari: Phytoseiidae) in ornamental nursery systems Author: Pratt, Paul D. We identified and evaluated a phytoseiid predator as a biological control agent of multiple spider mites pests that occur in ornamental nurseries. When comparing species, Neoseiulus fallacis (Garman) had a wider prey range than Galendromus occidentalis (Nesbitt), a higher probability of overwintering than Neoseiulus califomicus McGregor and was equally or more effective at suppressing spider mites than either of the other 2 phytoseiids in 4 field tests. To further evaluate N. fallacis we 1) measured prey range when held with 29 ornamental pests or alternative foods under laboratory conditions, 2) tested biological control of spider mites on representative plant species at both small and large spatial scales, 3) developed release and conservation strategies of the predator, and 4) examined the efficacy of the predator in controlling recently introduced pests. Neoseiulus fallacis had greatest survival and reproduction when feeding on spider mites but eriophyid mites, other mites and pollen enhanced survivorship and, in some cases, reproduction. When inoculated into ornamental plants, spider mite suppression was "acceptable" in 81% of small scale tests and-in all large scale tests. Limitations in control occurred in tall, vertical growing plants with little foliar canopy. Inoculation of N. fallacis at low prey densities into apple rootstocks was successful at suppressing Tetranychus urticae Koch and similar to control achieved at moderate prey densities. In small scale banker plant studies, high densities of adult and immature mites of N. fallacis were produced and moved downwind to receiver plants. In field tests with receiver plants placed at greater distances, only N. fallacis adult females readily dispersed to 30 m or more. When comparing overwintering survival of adult females among plant types, N. fallacis survived most on conifers, intermediate on evergreen shrubs and least on herbaceous perennials, deciduous shrubs and shade trees. Covering plants with protective plastic reduced overwintering survival of the predator. Neoseiulus fallacis successfully suppressed the newly introduced pests Panonychus citri (McGregor) and Schizotetranychus celarius (Banks) on Skimmia japonica Thunberg and Sasaella hidaensis (Makino and Uchida), respectively. Initial studies suggest that N. fallacis can be an effective biological control agent of multiple spider mites in low-growing and selected higher-growing ornamental plants. Title: Biological control of spider mites by the predatory mite Neoseiulus fallacis (Acari: Phytoseiidae) in ornamental nursery systems Author: Pratt, Paul D. We identified and evaluated a phytoseiid predator as a biological control agent of multiple spider mites pests that occur in ornamental nurseries. When comparing species, Neoseiulus fallacis (Garman) had a wider prey range than Galendromus occidentalis (Nesbitt), a higher probability of overwintering than Neoseiulus califomicus McGregor and was equally or more effective at suppressing spider mites than either of the other 2 phytoseiids in 4 field tests. To further evaluate N. fallacis we 1) measured prey range when held with 29 ornamental pests or alternative foods under laboratory conditions, 2) tested biological control of spider mites on representative plant species at both small and large spatial scales, 3) developed release and conservation strategies of the predator, and 4) examined the efficacy of the predator in controlling recently introduced pests. Neoseiulus fallacis had greatest survival and reproduction when feeding on spider mites but eriophyid mites, other mites and pollen enhanced survivorship and, in some cases, reproduction. When inoculated into ornamental plants, spider mite suppression was "acceptable" in 81% of small scale tests and-in all large scale tests. Limitations in control occurred in tall, vertical growing plants with little foliar canopy. Inoculation of N. fallacis at low prey densities into apple rootstocks was successful at suppressing Tetranychus urticae Koch and similar to control achieved at moderate prey densities. In small scale banker plant studies, high densities of adult and immature mites of N. fallacis were produced and moved downwind to receiver plants. In field tests with receiver plants placed at greater distances, only N. fallacis adult females readily dispersed to 30 m or more. When comparing overwintering survival of adult females among plant types, N. fallacis survived most on conifers, intermediate on evergreen shrubs and least on herbaceous perennials, deciduous shrubs and shade trees. Covering plants with protective plastic reduced overwintering survival of the predator. Neoseiulus fallacis successfully suppressed the newly introduced pests Panonychus citri (McGregor) and Schizotetranychus celarius (Banks) on Skimmia japonica Thunberg and Sasaella hidaensis (Makino and Uchida), respectively. Initial studies suggest that N. fallacis can be an effective biological control agent of multiple spider mites in low-growing and selected higher-growing ornamental plants. Close