Bob Gresswell, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 60
Pattern detection in stream networks: Quantifying spatial variability in fish distribution
Biological and physical properties of rivers and streams are inherently difficult to sample and visualize at the resolution and extent necessary to detect fine-scale distributional patterns over large areas. Satellite imagery and broad-scale fish survey methods are effective for quantifying spatial variability in biological and physical variables over a range of scales in marine environments but a
Authors
Christian E. Torgersen, Robert E. Gresswell, Douglas S. Bateman
Fire and aquatic ecosystems of the western USA: Current knowledge and key questions
Understanding of the effects of wildland fire and fire management on aquatic and riparian ecosystems is an evolving field, with many questions still to be resolved. Limitations of current knowledge, and the certainty that fire management will continue, underscore the need to summarize available information. Integrating fire and fuels management with aquatic ecosystem conservation begins with recog
Authors
P.A. Bisson, B. Rieman, C. Luce, Paul F. Hessburg, D. Lee, J. Kershner, G.H. Reeves, Robert E. Gresswell
Effects of fire on fish populations: Landscape perspectives on persistance of native fishes and nonnative fish invasions
Our limited understanding of the short and long-term effects of fire on fish contributes to considerable uncertainty in assessments of the risks and benefits of fire management alternatives. A primary concern among the many potential effects of fire is the effects of fire and fire management on persistence of native fish populations. Limited evidence suggests vulnerability of fish to fire is conti
Authors
J. B. Dunham, M. Young, Robert E. Gresswell, B. Rieman
Status of native fishes in the western United States and issues for fire and fuels management
Conservation of native fishes and changing patterns in wildfire and fuels are defining challenges for managers of forested landscapes in the western United States. Many species and populations of native fishes have declined in recorded history and some now occur as isolated remnants of what once were larger more complex systems. Land management activities have been viewed as one cause of this prob
Authors
B. Rieman, D. Lee, D. Burns, Robert E. Gresswell, M. Young, R. Stowell, J. Rinne, P. Howell
Introduction to the effects of wildland fire on aquatic ecosystems in the Western USA
The management of wildfire has long been controversial. The role of fire and fire-related management in terrestrial and aquatic ecosystems has become an important focus in recent years, but the general debate is not new. In his recent book, Stephen Pyne (2001 )describes the political and scientific debate surrounding the creation of the U.S. Forest Service and the emergence of fire suppression as
Authors
B. Rieman, Robert E. Gresswell, M. Young, C. Luce
The Cooperative Forest Ecosystem Research Program
Changes in priorities for forest management on federal and state lands in the Pacific Northwest have raised many questions about the best ways to manage young-forest stands, riparian areas, and forest landscapes. The Cooperative Forest Ecosystem Research (CFER) Program draws together scientists and managers from the U.S. Geological Survey, Bureau of Land Management, Oregon Department of Forestry,
Authors
Growth and diet of fish in Waldo Lake, Oregon
Waldo Lake, located in the Oregon Cascades, is considered to be one of the most dilute lakes in the world. Even with low nutrient concentrations and sparse populations of zooplankton, introduced fish in the lake are large in size and in good condition when compared to fish from other lakes. This apparent anomaly is due to the availability of benthic macroinvertebrates. Taxa found in the stomach co
Authors
Nicola L. Swanson, W.J. Liss, Jeffrey S. Ziller, M. Wade, R. E. Gresswell
Fire and aquatic ecosystems in forested biomes of North America
Synthesis of the literature suggests that physical, chemical, and biological elements of a watershed interact with long-term climate to influence fire regime, and that these factors, in concordance with the postfire vegetation mosaic, combine with local-scale weather to govern the trajectory and magnitude of change following a fire event. Perturbation associated with hydrological processes is prob
Authors
Robert E. Gresswell
Evolution and life-history organization of Yellowstone cutthroat trout
No abstract available.
Authors
Robert E. Gresswell, Richard N. Williams, K. Shiokawa
The role of special angling regulations in management of coastal cutthroat trout
No abstract available.
Authors
Robert E. Gresswell, R.D. Harding
A research problem analysis in support of the Cooperative Forest Ecosystem Research (CFER) Program
No abstract available.
Authors
Jeff P. Smith, Robert E. Gresswell, John P. Hayes
Long-term limnological data from the larger lakes of Yellowstone National Park, Wyoming, USA
Long-term limnological data from the four largest lakes in Yellowstone National Park (Yellowstone, Lewis, Shoshone, Heart) are used to characterize their limnology and patterns of temporal and spatial variability. Heart Lake has distinctively high concentrations of dissolved materials, apparently reflecting high thermal inputs. Shoshone and Lewis lakes have the highest total SiO2 concentrations (a
Authors
E.C. Theriot, S.C. Fritz, Robert E. Gresswell
Science and Products
Filter Total Items: 60
Pattern detection in stream networks: Quantifying spatial variability in fish distribution
Biological and physical properties of rivers and streams are inherently difficult to sample and visualize at the resolution and extent necessary to detect fine-scale distributional patterns over large areas. Satellite imagery and broad-scale fish survey methods are effective for quantifying spatial variability in biological and physical variables over a range of scales in marine environments but a
Authors
Christian E. Torgersen, Robert E. Gresswell, Douglas S. Bateman
Fire and aquatic ecosystems of the western USA: Current knowledge and key questions
Understanding of the effects of wildland fire and fire management on aquatic and riparian ecosystems is an evolving field, with many questions still to be resolved. Limitations of current knowledge, and the certainty that fire management will continue, underscore the need to summarize available information. Integrating fire and fuels management with aquatic ecosystem conservation begins with recog
Authors
P.A. Bisson, B. Rieman, C. Luce, Paul F. Hessburg, D. Lee, J. Kershner, G.H. Reeves, Robert E. Gresswell
Effects of fire on fish populations: Landscape perspectives on persistance of native fishes and nonnative fish invasions
Our limited understanding of the short and long-term effects of fire on fish contributes to considerable uncertainty in assessments of the risks and benefits of fire management alternatives. A primary concern among the many potential effects of fire is the effects of fire and fire management on persistence of native fish populations. Limited evidence suggests vulnerability of fish to fire is conti
Authors
J. B. Dunham, M. Young, Robert E. Gresswell, B. Rieman
Status of native fishes in the western United States and issues for fire and fuels management
Conservation of native fishes and changing patterns in wildfire and fuels are defining challenges for managers of forested landscapes in the western United States. Many species and populations of native fishes have declined in recorded history and some now occur as isolated remnants of what once were larger more complex systems. Land management activities have been viewed as one cause of this prob
Authors
B. Rieman, D. Lee, D. Burns, Robert E. Gresswell, M. Young, R. Stowell, J. Rinne, P. Howell
Introduction to the effects of wildland fire on aquatic ecosystems in the Western USA
The management of wildfire has long been controversial. The role of fire and fire-related management in terrestrial and aquatic ecosystems has become an important focus in recent years, but the general debate is not new. In his recent book, Stephen Pyne (2001 )describes the political and scientific debate surrounding the creation of the U.S. Forest Service and the emergence of fire suppression as
Authors
B. Rieman, Robert E. Gresswell, M. Young, C. Luce
The Cooperative Forest Ecosystem Research Program
Changes in priorities for forest management on federal and state lands in the Pacific Northwest have raised many questions about the best ways to manage young-forest stands, riparian areas, and forest landscapes. The Cooperative Forest Ecosystem Research (CFER) Program draws together scientists and managers from the U.S. Geological Survey, Bureau of Land Management, Oregon Department of Forestry,
Authors
Growth and diet of fish in Waldo Lake, Oregon
Waldo Lake, located in the Oregon Cascades, is considered to be one of the most dilute lakes in the world. Even with low nutrient concentrations and sparse populations of zooplankton, introduced fish in the lake are large in size and in good condition when compared to fish from other lakes. This apparent anomaly is due to the availability of benthic macroinvertebrates. Taxa found in the stomach co
Authors
Nicola L. Swanson, W.J. Liss, Jeffrey S. Ziller, M. Wade, R. E. Gresswell
Fire and aquatic ecosystems in forested biomes of North America
Synthesis of the literature suggests that physical, chemical, and biological elements of a watershed interact with long-term climate to influence fire regime, and that these factors, in concordance with the postfire vegetation mosaic, combine with local-scale weather to govern the trajectory and magnitude of change following a fire event. Perturbation associated with hydrological processes is prob
Authors
Robert E. Gresswell
Evolution and life-history organization of Yellowstone cutthroat trout
No abstract available.
Authors
Robert E. Gresswell, Richard N. Williams, K. Shiokawa
The role of special angling regulations in management of coastal cutthroat trout
No abstract available.
Authors
Robert E. Gresswell, R.D. Harding
A research problem analysis in support of the Cooperative Forest Ecosystem Research (CFER) Program
No abstract available.
Authors
Jeff P. Smith, Robert E. Gresswell, John P. Hayes
Long-term limnological data from the larger lakes of Yellowstone National Park, Wyoming, USA
Long-term limnological data from the four largest lakes in Yellowstone National Park (Yellowstone, Lewis, Shoshone, Heart) are used to characterize their limnology and patterns of temporal and spatial variability. Heart Lake has distinctively high concentrations of dissolved materials, apparently reflecting high thermal inputs. Shoshone and Lewis lakes have the highest total SiO2 concentrations (a
Authors
E.C. Theriot, S.C. Fritz, Robert E. Gresswell