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Science. 2015 May 22;348(6237):1261447. doi: 10.1126/science.1261447.

Ocean plankton. Environmental characteristics of Agulhas rings affect interocean plankton transport.

Author information

1
Aix Marseille Université, CNRS, IGS UMR 7256, 13288 Marseille, France. villar@igs.cnrs-mrs.fr not@sb-roscoff.fr hingamp@igs.cnrs-mrs.fr iudicone@szn.it karsenti@embl.de cbowler@biologie.ens.fr.
2
CNRS, UMR 7144, Station Biologique de Roscoff, Place Georges Teissier, 29680 Roscoff, France. Sorbonne Universités, Université Pierre et Marie Curie UPMC, Université Paris 06, UMR 7144, Station Biologique de Roscoff, Place Georges Teissier, 29680 Roscoff, France.
3
Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
4
Laboratoire de Physique des Océans (LPO) UMR 6523 CNRS-Ifremer-IRD-UBO, Plouzané, France. Department of Geosciences, Laboratoire de Météorologie Dynamique (LMD) UMR 8539, Ecole Normale Supérieure, 24 Rue Lhomond, 75231 Paris Cedex 05, France.
5
CNRS, UMR 7144, Station Biologique de Roscoff, Place Georges Teissier, 29680 Roscoff, France. Sorbonne Universités, Université Pierre et Marie Curie UPMC, Université Paris 06, UMR 7144, Station Biologique de Roscoff, Place Georges Teissier, 29680 Roscoff, France. Ecole Normale Supérieure, Institut de Biologie de l'ENS (IBENS), and Inserm U1024, and CNRS UMR 8197, F-75005 Paris, France.
6
Laboratoire de Physique des Océans (LPO) UMR 6523 CNRS-Ifremer-IRD-UBO, Plouzané, France.
7
Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA.
8
Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy.
9
School of Marine Sciences, University of Maine, Orono, ME, USA.
10
Sorbonne Universités, UPMC Université Paris 06, Observatoire Océanologique, F-06230 Villefranche-sur-Mer, France. INSU-CNRS, UMR 7093, LOV, Observatoire Océanologique, F-06230 Villefranche-sur-Mer, France.
11
Université de Toulon, Laboratoire PROTEE-EBMA E.A. 3819, BP 20132, 83957 La Garde Cedex, France.
12
CNRS, UMR 7159, Laboratoire d'Océanographie et du Climat LOCEAN, 4 Place Jussieu, 75005 Paris, France.
13
Aix Marseille Université, CNRS, IGS UMR 7256, 13288 Marseille, France.
14
Ecole Normale Supérieure, Institut de Biologie de l'ENS (IBENS), and Inserm U1024, and CNRS UMR 8197, F-75005 Paris, France.
15
Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Institut de Génomique, Genoscope, 2 Rue Gaston Crémieux, 91057 Evry, France. CNRS, UMR 8030, CP5706, Evry, France. Université d'Evry, UMR 8030, CP5706, Evry, France.
16
Structural and Computational Biology, European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany. Directors' Research, European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany.
17
Department of Marine Biology and Oceanography, Institute of Marine Sciences (ICM), CSIC, Passeig Marítim de la Barceloneta, 37-49, Barcelona E08003, Spain.
18
Structural and Computational Biology, European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany. Max-Delbrück-Centre for Molecular Medicine, 13092 Berlin, Germany.
19
PANGAEA, Data Publisher for Earth and Environmental Science, University of Bremen, Bremen, Germany. MARUM, Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany.
20
Structural and Computational Biology, European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany.
21
Ecole Normale Supérieure, Institut de Biologie de l'ENS (IBENS), and Inserm U1024, and CNRS UMR 8197, F-75005 Paris, France. Directors' Research, European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany. villar@igs.cnrs-mrs.fr not@sb-roscoff.fr hingamp@igs.cnrs-mrs.fr iudicone@szn.it karsenti@embl.de cbowler@biologie.ens.fr.
22
Ecole Normale Supérieure, Institut de Biologie de l'ENS (IBENS), and Inserm U1024, and CNRS UMR 8197, F-75005 Paris, France. villar@igs.cnrs-mrs.fr not@sb-roscoff.fr hingamp@igs.cnrs-mrs.fr iudicone@szn.it karsenti@embl.de cbowler@biologie.ens.fr.
23
CNRS, UMR 7144, Station Biologique de Roscoff, Place Georges Teissier, 29680 Roscoff, France. Sorbonne Universités, Université Pierre et Marie Curie UPMC, Université Paris 06, UMR 7144, Station Biologique de Roscoff, Place Georges Teissier, 29680 Roscoff, France. villar@igs.cnrs-mrs.fr not@sb-roscoff.fr hingamp@igs.cnrs-mrs.fr iudicone@szn.it karsenti@embl.de cbowler@biologie.ens.fr.
24
Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy. villar@igs.cnrs-mrs.fr not@sb-roscoff.fr hingamp@igs.cnrs-mrs.fr iudicone@szn.it karsenti@embl.de cbowler@biologie.ens.fr.

Abstract

Agulhas rings provide the principal route for ocean waters to circulate from the Indo-Pacific to the Atlantic basin. Their influence on global ocean circulation is well known, but their role in plankton transport is largely unexplored. We show that, although the coarse taxonomic structure of plankton communities is continuous across the Agulhas choke point, South Atlantic plankton diversity is altered compared with Indian Ocean source populations. Modeling and in situ sampling of a young Agulhas ring indicate that strong vertical mixing drives complex nitrogen cycling, shaping community metabolism and biogeochemical signatures as the ring and associated plankton transit westward. The peculiar local environment inside Agulhas rings may provide a selective mechanism contributing to the limited dispersal of Indian Ocean plankton populations into the Atlantic.

PMID:
25999514
DOI:
10.1126/science.1261447
[Indexed for MEDLINE]
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