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Survival of Juvenile Chinook Salmon and Coho Salmon in the Roza Dam Fish Bypass and in Downstream Reaches of the Yakima River, Washington, 2016
Estimates of juvenile salmon survival are important data for fishery managers in the Yakima River Basin. Radiotelemetry studies during 2012–14 showed that tagged juvenile Chinook salmon (Oncorhynchus tshawytscha) that passed through the fish bypass at Roza Dam had lower survival than fish that passed through other routes at the dam. That study also identified flow-survival relationships in the reaches between the Roza Dam tailrace and Sunnyside Dam. During 2012–14, survival also was estimated through reaches downstream of Sunnyside Dam, but generally, sample sizes were low and the estimates were imprecise. In 2016, we conducted an evaluation using acoustic cameras and acoustic telemetry to build on information collected during the previous study. The goal of the 2016 research was to identify areas where mortality occurs in the fish bypass at Roza Dam, and to estimate reach-specific survival in reaches downstream of the dam. The 2016 study included juvenile Chinook salmon and coho salmon (O. kisutch).
Survival of Juvenile Chinook Salmon and Coho Salmon in the Roza Dam Fish Bypass and in Downstream Reaches of the Yakima River, Washington, 2016
Estimates of juvenile salmon survival are important data for fishery managers in the Yakima River Basin. Radiotelemetry studies during 2012–14 showed that tagged juvenile Chinook salmon (Oncorhynchus tshawytscha) that passed through the fish bypass at Roza Dam had lower survival than fish that passed through other routes at the dam. That study also identified flow-survival relationships in the reaches between the Roza Dam tailrace and Sunnyside Dam. During 2012–14, survival also was estimated through reaches downstream of Sunnyside Dam, but generally, sample sizes were low and the estimates were imprecise. In 2016, we conducted an evaluation using acoustic cameras and acoustic telemetry to build on information collected during the previous study. The goal of the 2016 research was to identify areas where mortality occurs in the fish bypass at Roza Dam, and to estimate reach-specific survival in reaches downstream of the dam. The 2016 study included juvenile Chinook salmon and coho salmon (O. kisutch).
Survival of Juvenile Chinook Salmon and Coho Salmon in the Roza Dam Fish Bypass and in Downstream Reaches of the Yakima River, Washington, 2016
T. J. Kock (Autor:in) / R. W. Perry (Autor:in) / A. C. Hansen (Autor:in)
2016
42 pages
Report
Keine Angabe
Englisch
Fisheries & Aquaculture , Natural Resource Management , Ecology , Fishery management , Salmon , Survival , Radiotelemetry studies , Tagging , Fish bypasses , Data collection , Fish behavior , Acoustic camera footage , Behavior patterns , Juvenile Chinook Salmon (Oncorhynchus tshawytscha) , Coho salmon (O. kisustch) , Roza Dam Fish Bypass , Yakima River (Washington)
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