David A. Beauchamp, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 65
Age and trophic position dominate bioaccumulation of mercury and organochlorines in the food web of Lake Washington
Understanding the mechanisms of bioaccumulation in food webs is critical to predicting which food webs are at risk for higher rates of bioaccumulation that endanger the health of upper-trophic predators, including humans. Mercury and organochlorines were measured concurrently with stable isotopes of nitrogen and carbon in key fishes and invertebrates of Lake Washington to explore...
Authors
J.K. McIntyre, D.A. Beauchamp
Early marine life history of juvenile Pacific salmon in two regions of Puget Sound
Puget Sound could differentially represent either a simple migration corridor or an important rearing environment during the potentially critical early marine residence period for different species of Pacific salmon. Recent declines in various stocks of Puget Sound salmon could reflect degraded rearing conditions or changes in temporal-spatial utilization patterns by juvenile salmon in...
Authors
E.J. Duffy, D.A. Beauchamp, R.M. Buckley
Evidence for size-selective mortality after the first summer of ocean growth by pink salmon
Pink salmon Onchorhynchus gorbuscha with identifiable thermal otolith marks from Prince William Sound hatchery release groups during 2001 were used to test the hypothesis that faster-growing fish during their first summer in the ocean had higher survival rates than slower-growing fish. Marked juvenile pink salmon were sampled monthly in Prince William Sound and the Gulf of Alaska, and...
Authors
J.H. Moss, D.A. Beauchamp, A.D. Cross, K.W. Myers, Edward V. Farley, J.M. Murphy, J.H. Helle
A comparison of visual prey detection among species of piscivorous salmonids: Effects of light and low turbidities
Differences in reaction distance to prey fish by piscivorous salmonids can alter predator–prey interactions under different visual conditions. We compared reaction distances of three piscivorous salmonids commonly found in western lakes: cutthroat trout, Oncorhynchus clarki utah, rainbow trout, O. mykiss, and the nonnative lake char, Salvelinus namaycush. Reaction distances to salmonid...
Authors
Michael M. Mazur, David A. Beauchamp
Species profiles: life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest): chinook salmon
No abstract available.
Authors
David A. Beauchamp, Michael K. Shepard, Gilbert B. Pauley
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
Age and trophic position dominate bioaccumulation of mercury and organochlorines in the food web of Lake Washington
Understanding the mechanisms of bioaccumulation in food webs is critical to predicting which food webs are at risk for higher rates of bioaccumulation that endanger the health of upper-trophic predators, including humans. Mercury and organochlorines were measured concurrently with stable isotopes of nitrogen and carbon in key fishes and invertebrates of Lake Washington to explore...
Authors
J.K. McIntyre, D.A. Beauchamp
Early marine life history of juvenile Pacific salmon in two regions of Puget Sound
Puget Sound could differentially represent either a simple migration corridor or an important rearing environment during the potentially critical early marine residence period for different species of Pacific salmon. Recent declines in various stocks of Puget Sound salmon could reflect degraded rearing conditions or changes in temporal-spatial utilization patterns by juvenile salmon in...
Authors
E.J. Duffy, D.A. Beauchamp, R.M. Buckley
Evidence for size-selective mortality after the first summer of ocean growth by pink salmon
Pink salmon Onchorhynchus gorbuscha with identifiable thermal otolith marks from Prince William Sound hatchery release groups during 2001 were used to test the hypothesis that faster-growing fish during their first summer in the ocean had higher survival rates than slower-growing fish. Marked juvenile pink salmon were sampled monthly in Prince William Sound and the Gulf of Alaska, and...
Authors
J.H. Moss, D.A. Beauchamp, A.D. Cross, K.W. Myers, Edward V. Farley, J.M. Murphy, J.H. Helle
A comparison of visual prey detection among species of piscivorous salmonids: Effects of light and low turbidities
Differences in reaction distance to prey fish by piscivorous salmonids can alter predator–prey interactions under different visual conditions. We compared reaction distances of three piscivorous salmonids commonly found in western lakes: cutthroat trout, Oncorhynchus clarki utah, rainbow trout, O. mykiss, and the nonnative lake char, Salvelinus namaycush. Reaction distances to salmonid...
Authors
Michael M. Mazur, David A. Beauchamp
Species profiles: life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest): chinook salmon
No abstract available.
Authors
David A. Beauchamp, Michael K. Shepard, Gilbert B. Pauley
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.