Interactions between life history and the environment on changing growth rates of Chinook salmon

Buckner, Jack H.; Satterthwaite, William H.; Nelson, Benjamin W.; Ward, Eric J.

doi:10.1139/cjfas-2022-0116

i

Interactions between life history and the environment on changing growth rates of Chinook salmon

2022
By Buckner, Jack H. ; Satterthwaite, William H. ; Nelson, Benjamin W. ; ...

Details

Journal Title:

Canadian Journal of Fisheries and Aquatic Sciences
Personal Author:

Buckner, Jack H. ; Satterthwaite, William H. ; Nelson, Benjamin W. ; Ward, Eric J.
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center) ; SWFSC (Southwest Fisheries Science Center)
Description:

Fish in all the world's oceans exhibit variable body size and growth over time, with some populations exhibiting long-term declines in size. These patterns can be caused by a range of biotic, abiotic, and anthropogenic factors and impact the productivity of harvested populations. Within a given species, individuals often exhibit a range of life history strategies that may cause some groups to be buffered against change. One of the most studied declines in size-at-age has been in populations of salmon; Chinook salmon in the Northeast Pacific Ocean are the largest-bodied salmon species and have experienced long-term declines in size. Using long-term monitoring data, we develop novel size and growth models to link observed changes in Chinook size to life history traits and environmental variability. Our results identify three distinct trends in size across the 48 stocks in our study. Differences among populations are correlated with ocean distribution, migration timing, and freshwater residence. We provide evidence that trends are driven by interannual variation in certain oceanographic processes and competition with pink salmon.
Keywords:

Aquatic Science Ecology, Evolution, Behavior And Systematics Ecology, Evolution, Behavior And Systematics Ecology, Evolution, Behavior And Systematics
Source:

Canadian Journal of Fisheries and Aquatic Sciences (2022)
DOI:

https://doi.org/10.1139/cjfas-2022-0116
ISSN:

0706-652X ; 1205-7533
Format:

PDF
Publisher:

Canadian Science Publishing
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Library
Main Document Checksum:

urn:sha256:20746e2eba95a426d8658037c72c51dbe2afac1d8c7918e23950024d43a869df
Download URL:

https://repository.library.noaa.gov/view/noaa/52724/noaa_52724_DS1.pdf
File Type:

[PDF - 1.46 MB ]

ON THIS PAGE

Details

The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.