Streaming Media
Presentation Abstract
Declines in the size-at-age of Chinook salmon have been observed across the Pacific Northwest. Reasons for these declines are not well understood, though a number of potential causal factors have been highlighted. Here we present an analysis of size-at-age trends for BC Chinook escapements, testing the possible effects of some of these factors including hatchery influence, fishing, ocean conditions and predation among others. This project is part of a broader review of hatchery effectiveness being conducted by the Pacific Salmon Foundation.
Session Title
Salmon Management & Marine Survival
Conference Track
SSE4: Fish Science and Policy
Conference Name
Salish Sea Ecosystem Conference (2022 : Online)
Document Type
Event
SSEC Identifier
SSE-traditionals-58
Start Date
27-4-2022 9:45 AM
End Date
27-4-2022 11:15 AM
Type of Presentation
Oral
Genre/Form
conference proceedings; presentations (communicative events)
Contributing Repository
Digital content made available by University Archives, Heritage Resources, Western Libraries, Western Washington University.
Subjects – Topical (LCSH)
Chinook salmon--British Columbia; Fish hatcheries--British Columbia
Geographic Coverage
Salish Sea (B.C. and Wash.); British Columbia
Rights
Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author's written permission.
Type
Text
Language
English
Format
application/pdf
Included in
Fresh Water Studies Commons, Marine Biology Commons, Natural Resources and Conservation Commons, Terrestrial and Aquatic Ecology Commons
Region-wide declines in size at age for BC Chinook salmon: Trends and causes in space and time.
Declines in the size-at-age of Chinook salmon have been observed across the Pacific Northwest. Reasons for these declines are not well understood, though a number of potential causal factors have been highlighted. Here we present an analysis of size-at-age trends for BC Chinook escapements, testing the possible effects of some of these factors including hatchery influence, fishing, ocean conditions and predation among others. This project is part of a broader review of hatchery effectiveness being conducted by the Pacific Salmon Foundation.
