New information on resident areas of ocean age 0 Chinook salmon in the Strait of Georgia
Presentation Abstract
Ocean age 0 Chinook salmon are found throughout the Strait of Georgia. Some populations are persistently rearing in discrete regions of the strait. The South Thompson, Harrison/Chilliwack and Cowichan river populations, which represent approximately 70% of adult escapement to all rivers flowing into the Strait of Georgia, differ in their rearing areas. Increased escapements since the late 1990s to the South Thompson are proposed to result from increased prey density in the summer in their discrete rearing area. Recent increases in Cowichan River Chinook salmon escapements may be related to varying distribution patterns of hatchery and wild fish. Thus, it the productivity of these populations appears to be related to the prey production and ocean conditions in discrete regions of the Strait of Georgia.
Session Title
The Salish Sea Marine Survival Project: Juvenile Salmonid Growth and Survival
Conference Track
SSE11: Species and Food Webs
Conference Name
Salish Sea Ecosystem Conference (2018 : Seattle, Wash.)
Document Type
Event
SSEC Identifier
SSE11-254
Start Date
5-4-2018 10:15 AM
End Date
5-4-2018 10:30 AM
Type of Presentation
Oral
Genre/Form
presentations (communicative events)
Contributing Repository
Digital content made available by University Archives, Heritage Resources, Western Libraries, Western Washington University.
Subjects – Topical (LCSH)
Escapement (Fisheries)--Georgia, Strait of (B.C. and Wash.); Chinook salmon--Georgia, Strait of (B.C. and Wash.)
Geographic Coverage
Georgia, Strait of (B.C. and Wash.); Salish Sea (B.C. and Wash.)
Rights
This resource is displayed for educational purposes only and may be subject to U.S. and international copyright laws. For more information about rights or obtaining copies of this resource, please contact University Archives, Heritage Resources, Western Libraries, Western Washington University, Bellingham, WA 98225-9103, USA (360-650-7534; heritage.resources@wwu.edu) and refer to the collection name and identifier. Any materials cited must be attributed to the Salish Sea Ecosystem Conference Records, University Archives, Heritage Resources, Western Libraries, Western Washington University.
Type
Text
Language
English
Format
application/pdf
New information on resident areas of ocean age 0 Chinook salmon in the Strait of Georgia
Ocean age 0 Chinook salmon are found throughout the Strait of Georgia. Some populations are persistently rearing in discrete regions of the strait. The South Thompson, Harrison/Chilliwack and Cowichan river populations, which represent approximately 70% of adult escapement to all rivers flowing into the Strait of Georgia, differ in their rearing areas. Increased escapements since the late 1990s to the South Thompson are proposed to result from increased prey density in the summer in their discrete rearing area. Recent increases in Cowichan River Chinook salmon escapements may be related to varying distribution patterns of hatchery and wild fish. Thus, it the productivity of these populations appears to be related to the prey production and ocean conditions in discrete regions of the Strait of Georgia.
