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Global drivers of eukaryotic plankton biogeography in the sunlit ocean

View ORCID ProfileSommeria-Klein Guilhem, Watteaux Romain, Iudicone Daniele, Bowler Chris, Morlon Hélène
doi: https://doi.org/10.1101/2020.09.08.287524
Sommeria-Klein Guilhem
1Ecole Normale Supérieure, PSL Research University, Institut de Biologie de l’Ecole Normale Supérieure (IBENS), CNRS 59 UMR 8197, INSERM U1024, 46 rue d’Ulm, F-75005 Paris, France
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  • ORCID record for Sommeria-Klein Guilhem
  • For correspondence: guilhem.sk@gmail.com helene.morlon@bio.ens.psl.eu
Watteaux Romain
2Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy
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Iudicone Daniele
2Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy
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Bowler Chris
1Ecole Normale Supérieure, PSL Research University, Institut de Biologie de l’Ecole Normale Supérieure (IBENS), CNRS 59 UMR 8197, INSERM U1024, 46 rue d’Ulm, F-75005 Paris, France
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Morlon Hélène
1Ecole Normale Supérieure, PSL Research University, Institut de Biologie de l’Ecole Normale Supérieure (IBENS), CNRS 59 UMR 8197, INSERM U1024, 46 rue d’Ulm, F-75005 Paris, France
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  • For correspondence: guilhem.sk@gmail.com helene.morlon@bio.ens.psl.eu
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Abstract

Eukaryotic plankton are a core component of marine ecosystems with exceptional taxonomic and ecological diversity. Yet how their ecology interacts with the environment to drive global distribution patterns is poorly understood. Here, we use Tara Oceans metabarcoding data covering all the major ocean basins combined with a probabilistic model of taxon co-occurrence to compare the biogeography of 70 major groups of eukaryotic plankton. We uncover two main axes of biogeographic variation. First, more diverse groups display stronger biogeographic structure. Second, large-bodied consumers are structured by oceanic basins, mostly via the main currents, while small-bodied phototrophs are structured by latitude, with a comparatively stronger influence of environmental conditions. Our study highlights striking differences in biogeographies across plankton groups and investigates their determinants at the global scale.

One-sentence summary Eukaryotic plankton biogeography and its determinants at global scale reflect differences in ecology and body size.

Competing Interest Statement

The authors have declared no competing interest.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted December 24, 2020.
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Global drivers of eukaryotic plankton biogeography in the sunlit ocean
Sommeria-Klein Guilhem, Watteaux Romain, Iudicone Daniele, Bowler Chris, Morlon Hélène
bioRxiv 2020.09.08.287524; doi: https://doi.org/10.1101/2020.09.08.287524
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Global drivers of eukaryotic plankton biogeography in the sunlit ocean
Sommeria-Klein Guilhem, Watteaux Romain, Iudicone Daniele, Bowler Chris, Morlon Hélène
bioRxiv 2020.09.08.287524; doi: https://doi.org/10.1101/2020.09.08.287524

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