USGS Researchers Load Boat in Columbia River, OR
Detailed Description
Chris Pullano and Ryan Tomka load acoustic telemetry receives on to boat in lower Columbia River estuary. Field work was recently completed for the first year of a study to better understand how young salmon use restored habitats in the Lower Columbia River Estuary. The project seeks to answer key questions identified by the Columbia Estuary Ecosystem Restoration Program’s Expert Regional Technical Group (ERTG).
During the 2025 field season, researchers deployed acoustic telemetry equipment to track yearling Chinook salmon as they moved through both restored estuarine wetlands and the main Columbia River channel. The study aims to estimate how many fish enter these restored areas and how long they stay—critical information for evaluating the success of habitat restoration projects.
Sources/Usage
Public Domain.
Related
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Related
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Telemetry has been an invaluable tool to improve our understanding of adult Pacific Lamprey (Entosphenus tridentatus) movements and to guide management approaches to protect and restore this species of concern. Juvenile and larval lamprey, however, are much smaller than adults, and have not been monitored with telemetry because available transmitters have traditionally been too large...
Authors
Theresa L. Liedtke, Ralph T. Lampman, Z. Daniel Deng, Tyler E. Beals, Michael S. Porter, Amy C. Hansen, Tobias J. Kock, Ryan G. Tomka, Patrick Monk
Use of electromyogram telemetry to assess swimming activity of adult spring Chinook salmon migrating past a Columbia River dam Use of electromyogram telemetry to assess swimming activity of adult spring Chinook salmon migrating past a Columbia River dam
Electromyogram (EMG) radiotelemetry was used to estimate the swim speeds of spring Chinook salmon Oncorhynchus tshawytscha migrating upstream past a Columbia River dam. Electrodes from EMG transmitters were surgically implanted in the red muscle of fish captured at Bonneville Dam, and output from the tags was calibrated to defined swim speeds for each fish in a tunnel respirometer. The...
Authors
R.S. Brown, D.R. Geist, M.G. Mesa
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Abstract not available
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Abstract not available
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T.D. Counihan, J.H. Petersen