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Restructuring of genomic provinces of surface ocean plankton under climate change

Abstract : The impact of climate change on diversity, functioning and biogeography of marine plankton is a major unresolved scientific issue. Here, niche theory is applied on plankton metagenomes sampled during the Tara Oceans expedition to derive pan-ocean geographical structuring in climato-genomic provinces characterized by signature genomes for 6 size fractions, from viruses to meso-zooplankton. Assuming a high warming scenario (RCP8.5), the identified tropical provinces would expand and temperate provinces would shrink. Poleward shifts are projected for 96% of provinces in five major basins leading to their reorganization over ~50% of the surface ocean south of 60°N, of which 3% correspond to novel assemblages of provinces. Sea surface temperature is identified as the main driver and accounts only for ~51 % of the changes followed by phosphate (11%) and salinity (10.3%). These results demonstrate the potential of integration of genomics with physico-chemical data for higher scale modeling and understanding of ocean ecosystems.
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Contributor : Paul Frémont Connect in order to contact the contributor
Submitted on : Thursday, March 11, 2021 - 1:25:29 PM
Last modification on : Monday, December 13, 2021 - 9:16:11 AM
Long-term archiving on: : Saturday, June 12, 2021 - 6:41:32 PM


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Paul Frémont, Marion Gehlen, Mathieu Vrac, Jade Leconte, Patrick Wincker, et al.. Restructuring of genomic provinces of surface ocean plankton under climate change. 2021. ⟨cea-03166589v1⟩



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