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Nature. 2016 Apr 28;532(7600):465-470. doi: 10.1038/nature16942. Epub 2016 Feb 10.

Plankton networks driving carbon export in the oligotrophic ocean.

Author information

1
Sorbonne Universités, UPMC Université Paris 06, CNRS, Laboratoire d'oceanographie de Villefranche (LOV), Observatoire Océanologique, Villefranche-sur-Mer, France.
2
Department of Oceanography, University of Hawaii, Honolulu, Hawaii, USA.
3
Department of Microbiology and Immunology, Rega Institute, KU Leuven, Herestraat 49, 3000 Leuven, Belgium.
4
Center for the Biology of Disease, VIB, Herestraat 49, 3000 Leuven, Belgium.
5
Department of Applied Biological Sciences, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.
6
Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut de Biologie Paris-Seine (IBPS), Evolution Paris Seine, F-75005, Paris, France.
7
Ecole Normale Supérieure, PSL Research University, Institut de Biologie de l'Ecole Normale Supérieure (IBENS), CNRS UMR 8197, INSERM U1024, 46 rue d'Ulm, F-75005 Paris, France.
8
Sorbonne Universités, UPMC Université Paris 06, CNRS, Laboratoire Adaptation et Diversité en Milieu Marin, Station Biologique de Roscoff, Roscoff, France.
9
LINA UMR 6241, Université de Nantes, EMN, CNRS, 44322 Nantes, France.
10
Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, 85721, USA.
11
Structural and Computational Biology, European Molecular Biology Laboratory, Meyerhofstr. 1, 69117 Heidelberg, Germany.
12
Directors' Research European Molecular Biology Laboratory Meyerhofstr. 1 69117 Heidelberg Germany.
13
CEA - Institut de Génomique, GENOSCOPE, 2 rue Gaston Crémieux, 91057 Evry France.
14
Aix Marseille Université CNRS IGS UMR 7256 13288 Marseille France.
15
Department of Geosciences, Laboratoire de Météorologie Dynamique (LMD), Ecole Normale Supérieure, 24 rue Lhomond 75231 Paris Cedex 05 France.
16
Dept of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, USA.
17
School of Marine Sciences, University of Maine, Orono, USA.
18
Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan.
19
PANGAEA, Data Publisher for Earth and Environmental Science, University of Bremen, Bremen, Germany.
20
MARUM, Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany.
21
CNRS, UMR 8030, CP5706, Evry France.
22
Université d'Evry, UMR 8030, CP5706, Evry France.
23
Department of Marine Biology and Oceanography, Institute of Marine Sciences (ICM)-CSIC Pg. Marítim de la Barceloneta 37-49 Barcelona E08003 Spain.
24
Max-Delbrück-Centre for Molecular Medicine, 13092 Berlin, Germany.
25
Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Naples, Italy.
#
Contributed equally

Abstract

The biological carbon pump is the process by which CO2 is transformed to organic carbon via photosynthesis, exported through sinking particles, and finally sequestered in the deep ocean. While the intensity of the pump correlates with plankton community composition, the underlying ecosystem structure driving the process remains largely uncharacterized. Here we use environmental and metagenomic data gathered during the Tara Oceans expedition to improve our understanding of carbon export in the oligotrophic ocean. We show that specific plankton communities, from the surface and deep chlorophyll maximum, correlate with carbon export at 150 m and highlight unexpected taxa such as Radiolaria and alveolate parasites, as well as Synechococcus and their phages, as lineages most strongly associated with carbon export in the subtropical, nutrient-depleted, oligotrophic ocean. Additionally, we show that the relative abundance of a few bacterial and viral genes can predict a significant fraction of the variability in carbon export in these regions.

PMID:
26863193
PMCID:
PMC4851848
DOI:
10.1038/nature16942
[Indexed for MEDLINE]
Free PMC Article

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