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Research, monitoring, and evaluation of emerging issues and measures to recover the Snake River Fall Chinook Salmon ESU, 1/1/2016 - 12/31/2016

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Connor, W.P., and F.L. Mullins, K.F. Tiffan, J.M. Plumb, R.W. Perry, J.M. Erhardt, R.J. Hemingway, B.K. Bickford, and T.N. Rhodes. 2017. Research, monitoring, and evaluation of emerging issues and measures to recover the Snake River Fall Chinook Salmon ESU, January, 2016-December, 2016. Bonneville Power Administration. Project Number 199102900. Contract Numbers 72899, and 72898. 67 p.

Summary

The portion of the Snake River fall Chinook Salmon Oncorhynchus tshawytscha ESU that spawns upstream of Lower Granite Dam transitioned from low to high abundance during 1992–2016 in association with U.S. Endangered Species Act recovery efforts and other federally mandated actions. This annual report focuses on (1) numeric and habitat use responses by natural- and hatchery-origin spawners, (2) phenotypic and numeric responses by natural-origin juveniles, and (3) predator responses in the Snake River upper and lower reaches as abundance of adult and juvenile fall Chinook Salmon increased. Spawners have located and used most of the available spawning habitat and that habitat is gradually approaching redd capacity. Timing of spawning and [...]

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Type Scheme Key
local-index unknown 70189541
local-pk unknown 70189541

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languageEnglish
citationTypeReport

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