Non‐stationary and interactive effects of climate and competition on pink salmon productivity

Ohlberger, Jan; Ward, Eric J.; Brenner, Richard E.; Hunsicker, Mary E.; Haught, Stormy B.; Finnoff, David; Litzow, Michael A.; Schwoerer, Tobias; Ruggerone, Gregory T.; Hauri, Claudine

doi:10.1111/gcb.16049

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Non‐stationary and interactive effects of climate and competition on pink salmon productivity

2021
By Ohlberger, Jan ; Ward, Eric J. ; Brenner, Richard E. ; ...
Source: Global Change Biology, 28(6), 2026-2040

[PDF-1.71 MB]

Details Supporting Files You May Also Like

Details:

Journal Title:

Global Change Biology
Personal Author:

Ohlberger, Jan ; Ward, Eric J. ; Brenner, Richard E. ; Hunsicker, Mary E. ; Haught, Stormy B. ; ... More +

Ohlberger, Jan ; Ward, Eric J. ; Brenner, Richard E. ; Hunsicker, Mary E. ; Haught, Stormy B. ; Finnoff, David ; Litzow, Michael A. ; Schwoerer, Tobias ; Ruggerone, Gregory T. ; Hauri, Claudine Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center) ; AFSC (Alaska Fisheries Science Center) ; NOS (National Ocean Service)

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center) ; AFSC (Alaska Fisheries Science Center) ; NOS (National Ocean Service) Less -
Description:

Pacific salmon (Oncorhynchus spp.) are exposed to increased environmental change and multiple human stressors. To anticipate future impacts of global change and to improve sustainable resource management, it is critical to understand how wild salmon populations respond to stressors associated with human-caused changes such as climate warming and ocean acidification, as well as competition in the ocean, which is intensified by the large-scale production and release of hatchery reared salmon. Pink salmon (O. gorbuscha) are a keystone species in the North Pacific Ocean and support highly valuable commercial fisheries. We investigated the joint effects of changes in ocean conditions and salmon abundances on the productivity of wild pink salmon. Our analysis focused on Prince William Sound in Alaska, because the region accounts for ~50% of the global production of hatchery pink salmon with local hatcheries releasing 600–700 million pink salmon fry annually. Using 60 years of data on wild pink salmon abundances, hatchery releases, and ecological conditions in the ocean, we find evidence that hatchery pink salmon releases negatively affect wild pink salmon productivity, likely through competition between wild and hatchery juveniles in nearshore marine habitats. We find no evidence for effects of ocean acidification on pink salmon productivity. However, a change in the leading mode of North Pacific climate in 1988–1989 weakened the temperature–productivity relationship and altered the strength of intraspecific density dependence. Therefore, our results suggest non-stationary (i.e., time varying) and interactive effects of ocean climate and competition on pink salmon productivity. Our findings further highlight the need for salmon management to consider potential adverse effects of large-scale hatchery production within the context of ocean change.
Keywords:

[+]

Climatic Changes Fish Hatcheries Pacific Salmon Climate Competition Density Dependence Ecology Environmental Chemistry General Environmental Science Global And Planetary Change Hatcheries Ocean Acidification Population Productivity Salmon
Source:

Global Change Biology, 28(6), 2026-2040
DOI:

https://doi.org/10.1111/gcb.16049
Document Type:

Journal Article
Funding:

Grant no. NA18NOS4780180 ; Grant no. ; NA18NOS4780180

Grant no. NA18NOS4780180 ; Grant no. ; NA18NOS4780180 Less -
Rights Information:

CC BY-NC
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:c34189bebdf4308068101d65188f1aa2ee6fefedff1935491d9ea432c69377e0
Download URL:

https://repository.library.noaa.gov/view/noaa/48001/noaa_48001_DS1.pdf
File Type:

Supplemental media

pdf

More +