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Marshal is a Biological Science Laboratory Technician at the Western Fisheries Research Center.
Research Interests:
Marshal is a member of the genetics lab in the Ecology section at Western Fisheries. He has been in involved in many projects, with research using environmental DNA (eDNA) technology at the forefront. This includes involvement in the entire process of using eDNA as a research tool, from molecular assay design, field sampling, laboratory processing/analysis and publications. Use of eDNA based methods includes:
Marshal has also been involved in many other projects, and a few of his favorites have been: studies of fish species genetics (including the development of species markers for the endangered Lost River and shortnose suckers in the Klamath Basin); using quantitative food web interaction and bioenergetics models to study the impacts of invasive fish species to growth and production of native salmonids; annual dive surveys of the nearshore marine habitat following the Elwha Dam removal; developing novel detection methods for invasive European green crab.
USGS scientist setting up underwater video cameras in an eelgrass meadow on the Skagit River Delta. Eelgrass grows in shallow marine and estuarine waters where it forms structurally complex habitats that support many other aquatic species by providing attachment substrate, food, refuge from predation, and nursery areas.
USGS scientist setting up underwater video cameras in an eelgrass meadow on the Skagit River Delta. Eelgrass grows in shallow marine and estuarine waters where it forms structurally complex habitats that support many other aquatic species by providing attachment substrate, food, refuge from predation, and nursery areas.
USGS scientist setting up underwater video cameras in an eelgrass meadow on the Skagit River Delta. Eelgrass grows in shallow marine and estuarine waters where it forms structurally complex habitats that support many other aquatic species by providing attachment substrate, food, refuge from predation, and nursery areas.
USGS scientist setting up underwater video cameras in an eelgrass meadow on the Skagit River Delta. Eelgrass grows in shallow marine and estuarine waters where it forms structurally complex habitats that support many other aquatic species by providing attachment substrate, food, refuge from predation, and nursery areas.
Researchers on their way to sampling site on Diablo Lake. Diablo Lake is a reservoir in the North Cascade mountains of northern Washington. Created by Diablo Dam, the lake is located between Ross Lake and Gorge Lake on the Skagit River.
Researchers on their way to sampling site on Diablo Lake. Diablo Lake is a reservoir in the North Cascade mountains of northern Washington. Created by Diablo Dam, the lake is located between Ross Lake and Gorge Lake on the Skagit River.
Herring (top) and juvenile Chinook salmon (bottom) flushed from the stomach of a resident Chinook salmon in Puget Sound.
Herring (top) and juvenile Chinook salmon (bottom) flushed from the stomach of a resident Chinook salmon in Puget Sound.
USGS scientist setting up underwater video cameras in an eelgrass meadow on the Skagit River Delta. Eelgrass grows in shallow marine and estuarine waters where it forms structurally complex habitats that support many other aquatic species by providing attachment substrate, food, refuge from predation, and nursery areas.
USGS scientist setting up underwater video cameras in an eelgrass meadow on the Skagit River Delta. Eelgrass grows in shallow marine and estuarine waters where it forms structurally complex habitats that support many other aquatic species by providing attachment substrate, food, refuge from predation, and nursery areas.
USGS scientist setting up underwater video cameras in an eelgrass meadow on the Skagit River Delta. Eelgrass grows in shallow marine and estuarine waters where it forms structurally complex habitats that support many other aquatic species by providing attachment substrate, food, refuge from predation, and nursery areas.
USGS scientist setting up underwater video cameras in an eelgrass meadow on the Skagit River Delta. Eelgrass grows in shallow marine and estuarine waters where it forms structurally complex habitats that support many other aquatic species by providing attachment substrate, food, refuge from predation, and nursery areas.
Researchers on their way to sampling site on Diablo Lake. Diablo Lake is a reservoir in the North Cascade mountains of northern Washington. Created by Diablo Dam, the lake is located between Ross Lake and Gorge Lake on the Skagit River.
Researchers on their way to sampling site on Diablo Lake. Diablo Lake is a reservoir in the North Cascade mountains of northern Washington. Created by Diablo Dam, the lake is located between Ross Lake and Gorge Lake on the Skagit River.
Herring (top) and juvenile Chinook salmon (bottom) flushed from the stomach of a resident Chinook salmon in Puget Sound.
Herring (top) and juvenile Chinook salmon (bottom) flushed from the stomach of a resident Chinook salmon in Puget Sound.