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MEPS
Marine Ecology Progress Series

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MEPS 660:233-240 (2021)  -  DOI: https://doi.org/10.3354/meps13595

OPINION PIECE
Climate warming affects the depth distribution of marine ectotherms

Sven Thatje*

Ocean and Earth Science, University of Southampton, European Way, Southampton SO143ZH, UK
*Corresponding author:

ABSTRACT: Climate change causes warming of the oceans, and there is consensus that many marine ectotherms, including marine invertebrates and fishes, respond to the increase in temperature by showing latitudinal range shifts in their distribution. However, the effect of ocean warming on the bathymetric distribution of marine ectotherms remains largely theoretical, and few works evidence bathymetric range shifts. Since warming is not exclusive of surface waters, the depth distribution of species should also be affected by warming. Here, I exemplify bathymetric distribution ranges of marine ectotherms from the North Atlantic and advocate that there will be species-specific shifts in the fundamental ecological niches occupied in response to climate warming. Combined temperature and pressure acclimation to match oxygen capacity demands at physiological thresholds is key to this process. Species-specific tolerance of hydrostatic pressure and temperature determines depth distribution ranges of marine ectotherms.


KEY WORDS: Climate change · Biogeography · Bathymetric distribution · Latitude · Temperature · Hydrostatic pressure


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Cite this article as: Thatje S (2021) Climate warming affects the depth distribution of marine ectotherms. Mar Ecol Prog Ser 660:233-240. https://doi.org/10.3354/meps13595

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