Record Display for the EPA National Library Catalog


Main Title Strait of Georgia chinook and coho fishery /
Author Argue, A. W.,
Publisher Department of Fisheries and Oceans,
Year Published 1983
OCLC Number 09578841
ISBN 0660112817; 9780660112817
Subjects Chinook salmon fisheries--Georgia, Strait of (BC and Wash) ; Coho salmon fisheries--Georgia, Strait of (BC and Wash) ; Canada ; Fisheries--Canada
Library Call Number Additional Info Location Last
ELBM  SH223.A31 1983 no.211 AWBERC Library/Cincinnati,OH 04/15/2020
Collation xi, 91 pages : illustrations, maps ; 25 cm.
Includes bibliographical references (pages 58-61).
Contents Notes
The chinook (Oncorhynchus tshawytscha) and coho (O. kisutch) salmon fishery in the Strait of Georgia, between Vancouver Island and the mainland of British Columbia, is a valuble sport and commercial resource. In an effort to evaluate proposed regulations on sport and commercial fishermen (season closures, size limits, bag limits, etc.), a computer simulation model was developed. The model calculates the abundance and size of the natural and enhanced stocks of chinook and coho for each age-class and evaluates regulatory options by simulating the life history of these fish in half-monthly intervals. Cohorts enter the model as smolts and are followed through natural mortality, emigration out of the Strait of Georgia, fishing mortality, shaking mortality, maturation, and spawning. The major effect of any regulation that reduces catch to one user increases the catch to other users of the resource. Any attempt to increase spawning escapement without regulation of several users simultaneously is destined to failure, and even quite harsh regulations do not double the critical chinook escapement. Finally, it is found that "enhancement" of chinook and coho will lead to a more rapid decline of natural stocks unless regulations are found to reduce overall exploitation rates on these stocks.