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Ubiquitous abundance distribution of non-dominant plankton across the world’s ocean

Enrico Ser-Giacomi, Lucie Zinger, Shruti Malviya, Colomban De Vargas, Eric Karsenti, Chris Bowler, Silvia De Monte
doi: https://doi.org/10.1101/269068
Enrico Ser-Giacomi
1Institut de biologie de l’Ecole normale supérieure (IBENS), Département de Biologie, Ecole normale supérieure, CNRS, INSERM, PSL Research University, F-75005 Paris, France
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Lucie Zinger
1Institut de biologie de l’Ecole normale supérieure (IBENS), Département de Biologie, Ecole normale supérieure, CNRS, INSERM, PSL Research University, F-75005 Paris, France
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Shruti Malviya
1Institut de biologie de l’Ecole normale supérieure (IBENS), Département de Biologie, Ecole normale supérieure, CNRS, INSERM, PSL Research University, F-75005 Paris, France
2Simons Center, National Centre for Biological Sciences, Bangalore, 560065 Karnataka, India
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Colomban De Vargas
3CNRS, UMR 7144, Station Biologique de Roscoff, Place Georges Teissier, 29680 Roscoff, France
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Eric Karsenti
1Institut de biologie de l’Ecole normale supérieure (IBENS), Département de Biologie, Ecole normale supérieure, CNRS, INSERM, PSL Research University, F-75005 Paris, France
4Directors’ Research, EMBL, Meyerhofstraße 1, 69117 Heidelberg, Germany.
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Chris Bowler
1Institut de biologie de l’Ecole normale supérieure (IBENS), Département de Biologie, Ecole normale supérieure, CNRS, INSERM, PSL Research University, F-75005 Paris, France
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Silvia De Monte
1Institut de biologie de l’Ecole normale supérieure (IBENS), Département de Biologie, Ecole normale supérieure, CNRS, INSERM, PSL Research University, F-75005 Paris, France
5Department of Evolutionary Theory, Max Planck Institute for Evolutionary Biology, August-Thienemann-Str. 2, 24306 Plön, Germany
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Abstract

Species Abundance Distributions (SADs) bear the imprint of ecological processes that shape biological communities, and are therefore used to discriminate among different scenarios of community assembly. Even though empirical distributions appear to follow a handful of qualitative laws, it is still unclear if and how quantitative variation in SADs reflects peculiar features of the communities and their environmental context. Here, we use the extensive dataset generated by the Tara Oceans expedition for marine microbial eukaryotes (protists) and an adaptive algorithm to explore how SADs vary across plankton communities in the global ocean. We show that the decay in abundance of non-dominant OTUs, comprising over 99% of local richness, is commonly governed by a power-law. The power-law exponent varies by less than 10% across locations and shows no biogeographical signature, but is weakly modulated by cell size. Our findings suggest that large-scale ubiquitous ecological processes govern the assembly of non-dominant plankton throughout the global ocean.

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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 February 21, 2018.
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Ubiquitous abundance distribution of non-dominant plankton across the world’s ocean
Enrico Ser-Giacomi, Lucie Zinger, Shruti Malviya, Colomban De Vargas, Eric Karsenti, Chris Bowler, Silvia De Monte
bioRxiv 269068; doi: https://doi.org/10.1101/269068
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Ubiquitous abundance distribution of non-dominant plankton across the world’s ocean
Enrico Ser-Giacomi, Lucie Zinger, Shruti Malviya, Colomban De Vargas, Eric Karsenti, Chris Bowler, Silvia De Monte
bioRxiv 269068; doi: https://doi.org/10.1101/269068

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