Bob Gresswell, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 78
Introduction to the effects of wildland fire on aquatic ecosystems in the Western USA 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...
Authors
B. Rieman, Robert E. Gresswell, M. Young, C. Luce
The Cooperative Forest Ecosystem Research Program 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...
Authors
Water Resources Division U.S. Geological Survey
Spawning migration of lacustrine-adfluvial bull trout in a natural area Spawning migration of lacustrine-adfluvial bull trout in a natural area
We investigated the spawning migration of lacustrine-adfluvial bull trout Salvelinus confluentus in the North Fork Skokomish River in Olympic National Park (Washington State) during 1996. Day-snorkeling and electrofishing were conducted to determine timing and duration of the migration and the distribution and abundance of bull trout. The primary spawning migration began in early October...
Authors
Samuel J. Brenkman, Gary L. Larson, Robert E. Gresswell
Growth and diet of fish in Waldo Lake, Oregon 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...
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 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...
Authors
Robert E. Gresswell
Fire and aquatic ecosystems in forested biomes of North America Fire and aquatic ecosystems in forested biomes of North America
No abstract available.
Authors
R. E. Gresswell
A resource in crisis: Changing the measure of salmon management A resource in crisis: Changing the measure of salmon management
No abstract available.
Authors
C.A. Frissell, W.J. Liss, R. E. Gresswell, R.K. Nawa
Evolution and life-history organization of Yellowstone cutthroat trout 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 The role of special angling regulations in management of coastal cutthroat trout
No abstract available.
Authors
Robert E. Gresswell, R.D. Harding
Influence of basin-scale physical variables on life history characteristics of cutthroat trout in Yellowstone Lake Influence of basin-scale physical variables on life history characteristics of cutthroat trout in Yellowstone Lake
Individual spawning populations of Yellowstone cutthroat trout Oncorhynchus clarki bouvieri differ in life history characteristics associated with broad spatial and temporal environmental patterns, but relationships between specific life history characteristics of Yellowstone cutthroat trout and physical aspects of the environment are poorly understood. We examined basin-scale physical
Authors
Robert E. Gresswell, W.J. Liss, Gary L. Larson, Patrick J. Bartlein
Using mark-recapture methods to estimate fish abundance in small mountain lakes Using mark-recapture methods to estimate fish abundance in small mountain lakes
The majority of lacustrine fish populations in the western USA are located far from the nearest road. Although mark-recapture techniques are widely accepted for estimating population abundance, these techniques have been broadly ignored for fisheries surveys in remote mountain lakes because of restricted access and associated logistical constraints. In this study, mark recapture...
Authors
Robert E. Gresswell, W.J. Liss, G.A. Lomnicky, E. Deimling, Robert L. Hoffman, T. Tyler
Science and Products
Filter Total Items: 78
Introduction to the effects of wildland fire on aquatic ecosystems in the Western USA 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...
Authors
B. Rieman, Robert E. Gresswell, M. Young, C. Luce
The Cooperative Forest Ecosystem Research Program 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...
Authors
Water Resources Division U.S. Geological Survey
Spawning migration of lacustrine-adfluvial bull trout in a natural area Spawning migration of lacustrine-adfluvial bull trout in a natural area
We investigated the spawning migration of lacustrine-adfluvial bull trout Salvelinus confluentus in the North Fork Skokomish River in Olympic National Park (Washington State) during 1996. Day-snorkeling and electrofishing were conducted to determine timing and duration of the migration and the distribution and abundance of bull trout. The primary spawning migration began in early October...
Authors
Samuel J. Brenkman, Gary L. Larson, Robert E. Gresswell
Growth and diet of fish in Waldo Lake, Oregon 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...
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 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...
Authors
Robert E. Gresswell
Fire and aquatic ecosystems in forested biomes of North America Fire and aquatic ecosystems in forested biomes of North America
No abstract available.
Authors
R. E. Gresswell
A resource in crisis: Changing the measure of salmon management A resource in crisis: Changing the measure of salmon management
No abstract available.
Authors
C.A. Frissell, W.J. Liss, R. E. Gresswell, R.K. Nawa
Evolution and life-history organization of Yellowstone cutthroat trout 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 The role of special angling regulations in management of coastal cutthroat trout
No abstract available.
Authors
Robert E. Gresswell, R.D. Harding
Influence of basin-scale physical variables on life history characteristics of cutthroat trout in Yellowstone Lake Influence of basin-scale physical variables on life history characteristics of cutthroat trout in Yellowstone Lake
Individual spawning populations of Yellowstone cutthroat trout Oncorhynchus clarki bouvieri differ in life history characteristics associated with broad spatial and temporal environmental patterns, but relationships between specific life history characteristics of Yellowstone cutthroat trout and physical aspects of the environment are poorly understood. We examined basin-scale physical
Authors
Robert E. Gresswell, W.J. Liss, Gary L. Larson, Patrick J. Bartlein
Using mark-recapture methods to estimate fish abundance in small mountain lakes Using mark-recapture methods to estimate fish abundance in small mountain lakes
The majority of lacustrine fish populations in the western USA are located far from the nearest road. Although mark-recapture techniques are widely accepted for estimating population abundance, these techniques have been broadly ignored for fisheries surveys in remote mountain lakes because of restricted access and associated logistical constraints. In this study, mark recapture...
Authors
Robert E. Gresswell, W.J. Liss, G.A. Lomnicky, E. Deimling, Robert L. Hoffman, T. Tyler