Sampling drifting invertebrates from a stream in the North Cascades of Washington State. We perform drift sampling to determine the invertebrate prey quality and quantity available for drift feeding fish. Data gathered from this sampling are used in bioenergetics modeling, a method of estimating fish growth potential.
Benjamin L Jensen
I am a Biological Science Technician for the Western Fisheries Research Center, Seattle, WA
As a member of the Fish Ecology Section, I focus on work supporting the food web study of the Upper Skagit Hydroelectric Project as part of the FERC relicensing process. After taking part in much of the field sampling and laboratory analysis efforts, I am now concentrating on bioenergetics modeling of the reservoir tributaries.
Professional Experience
2019 - Present - Biological Science Technician, U.S. Geological Survey
2018 - Biological Science Technician, U.S. Forest Service
Education and Certifications
B.S. Environmental Science, University of Washington
Science and Products
Upper Skagit Reservoir Food Web Data, 2005-2021
Bioenergetic Growth Performance of Rainbow Trout in Upper Skagit Reservoir Tributaries, 2018-2021
Compilation of cost estimates for dam removal projects in the United States
Sampling drifting invertebrates from a stream in the North Cascades of Washington State. We perform drift sampling to determine the invertebrate prey quality and quantity available for drift feeding fish. Data gathered from this sampling are used in bioenergetics modeling, a method of estimating fish growth potential.
Researchers stage sampling equipment at the Ross Lake boat ramp and wait for boat to arrive to transport them to camping area. Food web sampling on large lakes requires a substantial amount of sampling gear. Ross Lake is a large reservoir in the North Cascade mountains of northern Washington state.
Researchers stage sampling equipment at the Ross Lake boat ramp and wait for boat to arrive to transport them to camping area. Food web sampling on large lakes requires a substantial amount of sampling gear. Ross Lake is a large reservoir in the North Cascade mountains of northern Washington state.
Ross Lake is a large reservoir in the North Cascade mountains of northern Washington state. This photo was taken while conducting food web research to support the Skagit River Hydroelectric Dam FERC relicensing process. To learn more about this project and other related research you can visit the WFRC Ecology Section website.
Ross Lake is a large reservoir in the North Cascade mountains of northern Washington state. This photo was taken while conducting food web research to support the Skagit River Hydroelectric Dam FERC relicensing process. To learn more about this project and other related research you can visit the WFRC Ecology Section website.
Evening shot of Ross Lake with boat wake. Heading back to camp after a day of research. Ross Lake is a large reservoir in the North Cascade mountains of northern Washington state. This photo was taken while conducting food web research to support the Skagit River Hydroelectric Dam FERC relicensing process.
Evening shot of Ross Lake with boat wake. Heading back to camp after a day of research. Ross Lake is a large reservoir in the North Cascade mountains of northern Washington state. This photo was taken while conducting food web research to support the Skagit River Hydroelectric Dam FERC relicensing process.
Change in growth and prey utilization for a native salmonid following invasion by an omnivorous minnow in an oligotrophic reservoir
Prey supply and predation as potential limitations to feasibility of anadromous salmonid introductions in a reservoir
Shift in piscivory by salmonids following invasion of a minnow in an oligotrophic reservoir
Growth performance of Rainbow Trout in reservoir tributaries and implications for steelhead growth potential above Skagit River dams
Patterns, drivers, and a predictive model of dam removal cost in the United States
Given the burgeoning dam removal movement and the large number of dams approaching obsolescence in the United States, cost estimating data and tools are needed for dam removal prioritization, planning, and execution. We used the list of removed dams compiled by American Rivers to search for publicly available reported costs for dam removal projects. Total cost information could include component c
Science and Products
Upper Skagit Reservoir Food Web Data, 2005-2021
Bioenergetic Growth Performance of Rainbow Trout in Upper Skagit Reservoir Tributaries, 2018-2021
Compilation of cost estimates for dam removal projects in the United States
Sampling drifting invertebrates from a stream in the North Cascades of Washington State. We perform drift sampling to determine the invertebrate prey quality and quantity available for drift feeding fish. Data gathered from this sampling are used in bioenergetics modeling, a method of estimating fish growth potential.
Sampling drifting invertebrates from a stream in the North Cascades of Washington State. We perform drift sampling to determine the invertebrate prey quality and quantity available for drift feeding fish. Data gathered from this sampling are used in bioenergetics modeling, a method of estimating fish growth potential.
Researchers stage sampling equipment at the Ross Lake boat ramp and wait for boat to arrive to transport them to camping area. Food web sampling on large lakes requires a substantial amount of sampling gear. Ross Lake is a large reservoir in the North Cascade mountains of northern Washington state.
Researchers stage sampling equipment at the Ross Lake boat ramp and wait for boat to arrive to transport them to camping area. Food web sampling on large lakes requires a substantial amount of sampling gear. Ross Lake is a large reservoir in the North Cascade mountains of northern Washington state.
Ross Lake is a large reservoir in the North Cascade mountains of northern Washington state. This photo was taken while conducting food web research to support the Skagit River Hydroelectric Dam FERC relicensing process. To learn more about this project and other related research you can visit the WFRC Ecology Section website.
Ross Lake is a large reservoir in the North Cascade mountains of northern Washington state. This photo was taken while conducting food web research to support the Skagit River Hydroelectric Dam FERC relicensing process. To learn more about this project and other related research you can visit the WFRC Ecology Section website.
Evening shot of Ross Lake with boat wake. Heading back to camp after a day of research. Ross Lake is a large reservoir in the North Cascade mountains of northern Washington state. This photo was taken while conducting food web research to support the Skagit River Hydroelectric Dam FERC relicensing process.
Evening shot of Ross Lake with boat wake. Heading back to camp after a day of research. Ross Lake is a large reservoir in the North Cascade mountains of northern Washington state. This photo was taken while conducting food web research to support the Skagit River Hydroelectric Dam FERC relicensing process.
Change in growth and prey utilization for a native salmonid following invasion by an omnivorous minnow in an oligotrophic reservoir
Prey supply and predation as potential limitations to feasibility of anadromous salmonid introductions in a reservoir
Shift in piscivory by salmonids following invasion of a minnow in an oligotrophic reservoir
Growth performance of Rainbow Trout in reservoir tributaries and implications for steelhead growth potential above Skagit River dams
Patterns, drivers, and a predictive model of dam removal cost in the United States
Given the burgeoning dam removal movement and the large number of dams approaching obsolescence in the United States, cost estimating data and tools are needed for dam removal prioritization, planning, and execution. We used the list of removed dams compiled by American Rivers to search for publicly available reported costs for dam removal projects. Total cost information could include component c