David A. Beauchamp, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 65
Physiological and nutritional constraints on zooplankton productivity due to eutrophication and climate change predicted using a resource-based modeling approach Physiological and nutritional constraints on zooplankton productivity due to eutrophication and climate change predicted using a resource-based modeling approach
Emerging evidence suggests that zooplankton production is affected by physiological and nutritional constraints due to climate change and eutrophication, which in turn could have broad implications for food-web dynamics and fisheries production. In this study, we developed a resource-based zooplankton production dynamics model that causally links freshwater cladoceran and copepod daily...
Authors
Chen Zhang, Michael T. Brett, Jens M Nielsen, George B Arhonditsis, Ashley P Ballantyne, Jackie L Carter, Jacob Kann, Dorthe C Muller-Navarra, Daniel E. Schindler, Jason D. Stockwell, Monika Winder, David Beauchamp
Merging empirical and mechanistic approaches to modeling aquatic visual foraging using a generalizable visual reaction distance model Merging empirical and mechanistic approaches to modeling aquatic visual foraging using a generalizable visual reaction distance model
Visual encounter distance models are important tools for predicting how light and water clarity mediate visual predator-prey interactions that affect the structure and function of aquatic ecosystems at multiple spatial, temporal, and organizational scales. The two main varieties of visual encounter distance models, mechanistic and empirical, are used for similar purposes but take...
Authors
Sean K. Rohan, David Beauchamp, Timothy E. Essington, Adam G. Hansen
Taxonomic, temporal, and spatial variations in zooplankton fatty acid composition in Puget Sound, WA, USA Taxonomic, temporal, and spatial variations in zooplankton fatty acid composition in Puget Sound, WA, USA
Fatty acid (FA) content and composition of zooplankton in Puget Sound, Washington (USA) was studied to investigate the nutritional quality of diverse zooplankton prey for juvenile salmon (Oncorhynchus spp.) in terms of their essential fatty acid (EFA) content. The study focus was on eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and arachidonic acid (ARA) as these are key FA...
Authors
Minna Hiltunen, Ursula Strandberg, Michael T. Brett, Amanda K. Winans, David Beauchamp, Miika Kotila, Julie E. Keister
Artificial lights with different spectra do not alter detrimental attraction of young Chinook salmon and sockeye salmon along lake shorelines Artificial lights with different spectra do not alter detrimental attraction of young Chinook salmon and sockeye salmon along lake shorelines
Artificial light at night (ALAN) is common in lakes with developed shorelines, especially prevalent in the nearshore areas where juvenile fishes, including salmonids, are present. One concern is that fishes may be attracted to ALAN and become more vulnerable to predators. The use of longer wavelength lights has been suggested to reduce the effects of ALAN; however, the response in...
Authors
Roger A. Tabor, Elizabeth K Perkin, David Beauchamp, Lyle L. Britt, Rebecca Haehn, John A. Greene, Timothy J. Robinson, Scott Stolnack, Daniel W Lantz, Zachary J Moore
Using bottom trawls to monitor subsurface water clarity in marine ecosystems Using bottom trawls to monitor subsurface water clarity in marine ecosystems
Biophysical processes that affect subsurface water clarity play a key role in ecosystem function. However, subsurface water clarity is poorly monitored in marine ecosystems because doing so requires in-situ sampling that is logistically difficult to conduct and sustain. Novel solutions are thus needed to improve monitoring of subsurface water clarity. To that end, we developed a sampling...
Authors
Sean K. Rohan, Stan Kotwicki, Kelly A. Kearney, Jennifer A Schulien, Edward A. Laman, Edward D. Cokelet, David Beauchamp, Lyle L. Britt, Kerim Y. Aydin, Stephani G. Zador
Variable prey consumption leads to distinct regional differences in Chinook salmon growth during the early marine critical period Variable prey consumption leads to distinct regional differences in Chinook salmon growth during the early marine critical period
Growth during the early marine critical period is positively associated with survival and recruitment for Pacific salmon Oncorhynchus spp., so it is important to understand how certain foraging strategies may bolster growth in estuarine and marine environments. To elucidate how spatiotemporal and demographic differences in diet contribute to growth rate variability, we analyzed stomach...
Authors
Melanie J Davis, Joshua W. Chamberlin, Jennifer R. Gardner, Kristin A. Connelly, Madilyn M. Gamble, Brian R. Beckman, David Beauchamp
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 65
Physiological and nutritional constraints on zooplankton productivity due to eutrophication and climate change predicted using a resource-based modeling approach Physiological and nutritional constraints on zooplankton productivity due to eutrophication and climate change predicted using a resource-based modeling approach
Emerging evidence suggests that zooplankton production is affected by physiological and nutritional constraints due to climate change and eutrophication, which in turn could have broad implications for food-web dynamics and fisheries production. In this study, we developed a resource-based zooplankton production dynamics model that causally links freshwater cladoceran and copepod daily...
Authors
Chen Zhang, Michael T. Brett, Jens M Nielsen, George B Arhonditsis, Ashley P Ballantyne, Jackie L Carter, Jacob Kann, Dorthe C Muller-Navarra, Daniel E. Schindler, Jason D. Stockwell, Monika Winder, David Beauchamp
Merging empirical and mechanistic approaches to modeling aquatic visual foraging using a generalizable visual reaction distance model Merging empirical and mechanistic approaches to modeling aquatic visual foraging using a generalizable visual reaction distance model
Visual encounter distance models are important tools for predicting how light and water clarity mediate visual predator-prey interactions that affect the structure and function of aquatic ecosystems at multiple spatial, temporal, and organizational scales. The two main varieties of visual encounter distance models, mechanistic and empirical, are used for similar purposes but take...
Authors
Sean K. Rohan, David Beauchamp, Timothy E. Essington, Adam G. Hansen
Taxonomic, temporal, and spatial variations in zooplankton fatty acid composition in Puget Sound, WA, USA Taxonomic, temporal, and spatial variations in zooplankton fatty acid composition in Puget Sound, WA, USA
Fatty acid (FA) content and composition of zooplankton in Puget Sound, Washington (USA) was studied to investigate the nutritional quality of diverse zooplankton prey for juvenile salmon (Oncorhynchus spp.) in terms of their essential fatty acid (EFA) content. The study focus was on eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and arachidonic acid (ARA) as these are key FA...
Authors
Minna Hiltunen, Ursula Strandberg, Michael T. Brett, Amanda K. Winans, David Beauchamp, Miika Kotila, Julie E. Keister
Artificial lights with different spectra do not alter detrimental attraction of young Chinook salmon and sockeye salmon along lake shorelines Artificial lights with different spectra do not alter detrimental attraction of young Chinook salmon and sockeye salmon along lake shorelines
Artificial light at night (ALAN) is common in lakes with developed shorelines, especially prevalent in the nearshore areas where juvenile fishes, including salmonids, are present. One concern is that fishes may be attracted to ALAN and become more vulnerable to predators. The use of longer wavelength lights has been suggested to reduce the effects of ALAN; however, the response in...
Authors
Roger A. Tabor, Elizabeth K Perkin, David Beauchamp, Lyle L. Britt, Rebecca Haehn, John A. Greene, Timothy J. Robinson, Scott Stolnack, Daniel W Lantz, Zachary J Moore
Using bottom trawls to monitor subsurface water clarity in marine ecosystems Using bottom trawls to monitor subsurface water clarity in marine ecosystems
Biophysical processes that affect subsurface water clarity play a key role in ecosystem function. However, subsurface water clarity is poorly monitored in marine ecosystems because doing so requires in-situ sampling that is logistically difficult to conduct and sustain. Novel solutions are thus needed to improve monitoring of subsurface water clarity. To that end, we developed a sampling...
Authors
Sean K. Rohan, Stan Kotwicki, Kelly A. Kearney, Jennifer A Schulien, Edward A. Laman, Edward D. Cokelet, David Beauchamp, Lyle L. Britt, Kerim Y. Aydin, Stephani G. Zador
Variable prey consumption leads to distinct regional differences in Chinook salmon growth during the early marine critical period Variable prey consumption leads to distinct regional differences in Chinook salmon growth during the early marine critical period
Growth during the early marine critical period is positively associated with survival and recruitment for Pacific salmon Oncorhynchus spp., so it is important to understand how certain foraging strategies may bolster growth in estuarine and marine environments. To elucidate how spatiotemporal and demographic differences in diet contribute to growth rate variability, we analyzed stomach...
Authors
Melanie J Davis, Joshua W. Chamberlin, Jennifer R. Gardner, Kristin A. Connelly, Madilyn M. Gamble, Brian R. Beckman, David Beauchamp
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.