Unique thermal sensitivity imposes a cold-water energetic barrier for vertical migrators

Seibel, Brad A.; Birk, Matthew A.

doi:10.1038/s41558-022-01491-6

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Unique thermal sensitivity imposes a cold-water energetic barrier for vertical migrators

2022
By Seibel, Brad A. ; Birk, Matthew A.
Source: Nature Climate Change, 12(11), 1052-1058

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Journal Title:

Nature Climate Change
Personal Author:

Seibel, Brad A. ; Birk, Matthew A.

Seibel, Brad A. ; Birk, Matthew A. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research)
Description:

Alterations of marine species’ ranges with climate change are often attributed to oxygen limitation in warming oceans. Here we report unique metabolic temperature sensitivities for the myriad of vertically migrating oceanic species that daily cross depth-related gradients in temperature and oxygen. In these taxa, selection favours high metabolic activity for predator–prey interactions in warm shallow water and hypoxia tolerance in the cold at depth. These diverging selective pressures result in thermal insensitivity of oxygen supply capacity and enhanced thermal sensitivity of active metabolic rate. Aerobic scope is diminished in the cold, well beyond thermodynamic influences and regardless of ambient oxygen levels, explaining the native distributions of tropical migrators and their recent range expansions following warming events. Cold waters currently constitute an energetic barrier to latitudinal range expansion in vertical migrators. As warming due to climate change approaches, and eventually surpasses, temperatures seen during past warming events, this energetic barrier will be relieved.
Keywords:

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Environmental Science (miscellaneous) Social Sciences (miscellaneous)
Source:

Nature Climate Change, 12(11), 1052-1058
DOI:

https://doi.org/10.1038/s41558-022-01491-6
ISSN:

1758-678X;1758-6798;
Format:

PDF
Publisher:

Springer Science and Business Media LLC
Document Type:

Journal Article
Funding:

Grant no. NA18NOS4780167
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https://creativecommons.org/licenses/by/4.0/
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CC BY
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urn:sha256:e0946bdd65e51acb6aa791fe8d81f802604f09a9bb973823036401230bc2b496
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https://repository.library.noaa.gov/view/noaa/58592/noaa_58592_DS1.pdf
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Unique thermal sensitivity imposes a cold-water energetic barrier for vertical migrators

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