Evaluation of Pinniped Predation on Adult Salmonids and Other Fish in the Bonneville Dam Tailrace, 2008-2010

Stansell, Robert J; Gibbons, Karrie M.; Nagy, William T.

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Evaluation of Pinniped Predation on Adult Salmonids and Other Fish in the Bonneville Dam Tailrace, 2008-2010

2010
By Stansell, Robert J ; Gibbons, Karrie M. ; Nagy, William T.

[PDF-1.79 MB]

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Personal Author:

Stansell, Robert J ; Gibbons, Karrie M. ; Nagy, William T.

Stansell, Robert J ; Gibbons, Karrie M. ; Nagy, William T. Less -
Corporate Authors:

U.S. Army Corps of Engineers ; United States. National Marine Fisheries Service

U.S. Army Corps of Engineers ; United States. National Marine Fisheries Service Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service)
Description:

The U.S. Army Corps of Engineers Fisheries Field Unit (FFU) has conducted surface observations to evaluate the seasonal presence, abundance, and predation activities of pinnipeds, including California sea lions (Zalophus californianus), Steller’s sea lions (Eumetopias jubatus), and harbor seals (Phoca vitulina) in the Bonneville Dam tailrace each year since 2002. This monitoring program was initiated in response to concerns over the potential impact of California sea lion (CSL) predation on adult salmonids passing Bonneville Dam in the spring, including spring Chinook salmon (Oncorhynchus tshawytscha) and steelhead (O. mykiss). This report summarizes observations from 2008 through 2010.
Keywords:

[+]

Biological Monitoring California Sea Lion Chinook Salmon Evaluation Harbor Seal Observation (Scientific Method) Pinnipedia Predation (Biology) Salmonidae Steelhead (Fish) Steller's Sea Lion Sturgeon Chub
Document Type:

Miscellaneous
Place as Subject:

Columbia River ; Bonneville Dam (Or. and Wash.)

Columbia River ; Bonneville Dam (Or. and Wash.) Less -
Rights Information:

Public Domain
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:db310ebb5b8cb94b460dff53b2acc7f5f0a908e4d769215ac5eea158c553f7be
Download URL:

https://repository.library.noaa.gov/view/noaa/23904/noaa_23904_DS1.pdf
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Evaluation of Pinniped Predation on Adult Salmonids and Other Fish in the Bonneville Dam Tailrace, 2008-2010

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