Stock assessment of the return of early-run chinook salmon to the Kenai River, 1996

Stock assessment of the return of early-run c ...
Stephen Hammarstrom, Stephen H ...
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Last edited by WorkBot
January 18, 2010 | History

Stock assessment of the return of early-run chinook salmon to the Kenai River, 1996

The total inriver return of early-run (May and June) chinook salmon Oncorhynchus tshawytscha as estimated through hydroacoustic techniques was 23,505 (SE = 376) fish. Angler effort and harvest as estimated by a creel survey during the early chinook salmon run in the downstream section (Cook Inlet to the Soldotna Bridge) were 130,180 (SE = 3,914) angler hours and 4,166 (SE = 290) chinook salmon, respectively. When expanded to account for the unsurveyed portion of the fishery, total estimated effort and harvest were 185,921 angler-hours and 5,966 (SE = 442) fish, respectively; approximately equal to the 1974-1995 mean. Estimated release mortality was 241 (SE = 136) fish. Spawning escapement, estimated by subtracting total fishing mortality from total inriver return, was 17,298 (SE = 596) fish. This escapement was nearly double that stipulated by the Kenai River Early King Salmon Management Plan. The predominant age class of both the inriver return and the recreational harvest of early-run chinook salmon was age-1.4 fish. Migratory timing models were used to project spawning escapement during the 1996 fishery. No restrictions to the recreational fishery were required to achieve the escapement. A model based on sibling ratios was used to forecast the 1997 return at 31,622 (SE = 9,324) chinook salmon.

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Cover of: Stock assessment of the return of early-run chinook salmon to the Kenai River, 1996
Stock assessment of the return of early-run chinook salmon to the Kenai River, 1996
1997, Alaska Dept. of Fish and Game, Division of Sport Fish, Research and Technical Services
in English

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Book Details


Edition Notes

"May 1997".

Includes bibliographical references (p. 30-33).

Also issued online.

Published in
Anchorage
Series
Fishery data series -- no. 97-10.

Classifications

Dewey Decimal Class
597.55/097983
Library of Congress
SH11 .A7542 no. 97-10

The Physical Object

Pagination
iv, 55 p. :
Number of pages
55

ID Numbers

Open Library
OL17695766M

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January 18, 2010 Edited by WorkBot add subjects and covers
December 11, 2009 Created by WorkBot add works page