Threatened salmon rely on a rare life history strategy in a warming landscape

Cordoleani, F.; Phillis, C. C.; Sturrock, A. M.; FitzGerald, A. M.; Malkassian, A.; Whitman, G. E.; Weber, P. K.; Johnson, R. C.

doi:10.1038/s41558-021-01186-4

i

Threatened salmon rely on a rare life history strategy in a warming landscape

Supporting Files

2021
By Cordoleani, F. ; Phillis, C. C. ; Sturrock, A. M.
Source Nature Climate Change, 11(11), 982-988

Details

Journal Title:

Nature Climate Change
Personal Author:

Cordoleani, F. ; Phillis, C. C. ; Sturrock, A. M. ; FitzGerald, A. M. ; Malkassian, A. ; Whitman, G. E. ; Weber, P. K. ; Johnson, R. C.
NOAA Program & Office:

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

Rare phenotypes and behaviours within a population are often overlooked, yet they may serve a heightened role for species imperilled by rapid warming. In threatened spring-run Chinook salmon spawning at the southern edge of the species range, we show late-migrating juveniles are critical to cohort success in years characterized by droughts and ocean heatwaves. Late migrants rely on cool river temperatures over summer, increasingly rare due to the combined effects of warming and impassable dams. Despite the dominance of late migrants, other strategies played an important role in many years. Our results suggest that further loss of phenotypic diversity will have critical impacts on population persistence in a warming climate. Predicted thermally suitable river conditions for late migrants will shrink rapidly in the future and will be largely relegated above impassable dams. Reconnecting diverse habitat mosaics to support phenotypic diversity will be integral to the long-term persistence of this species.
Keywords:
- Social Sciences (miscellaneous)
- Environmental Science (miscellaneous)
Source:

Nature Climate Change, 11(11), 982-988
DOI:

https://doi.org/10.1038/s41558-021-01186-4
ISSN:

1758-678X ; 1758-6798
Format:

PDF
Publisher:

Springer Science and Business Media LLC
Document Type:

Journal Article
Funding:

Grant no. NA150AR4320071
Rights Information:

Accepted Manuscript
Compliance:

Submitted
Download URL:

https://repository.library.noaa.gov/view/noaa/50077/noaa_50077_DS1.pdf
File Type:

[PDF - 4.82 MB]
Collection(s):

National Marine Fisheries Service (NMFS)
Main Document Checksum:

urn:sha256:c82ce5c4c6617174fe71ee001ec61603d00bc7c4484891c179a635349ac9b42d

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