Articles | Volume 16, issue 5
https://doi.org/10.5194/bg-16-999-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/bg-16-999-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Evidence of high N2 fixation rates in the temperate northeast Atlantic
Debany Fonseca-Batista
CORRESPONDING AUTHOR
Analytical, Environmental and Geo-Chemistry, Earth System Sciences
Research Group, Vrije Universiteit Brussel, 1050 Brussels, Belgium
Department of Biology, Dalhousie University, B3H 4R2 Halifax, Nova Scotia, Canada
Xuefeng Li
Analytical, Environmental and Geo-Chemistry, Earth System Sciences
Research Group, Vrije Universiteit Brussel, 1050 Brussels, Belgium
Service de Biogéochimie et Modélisation du Système Terre,
Université Libre de Bruxelles, 1050 Brussels, Belgium
Virginie Riou
Aix-Marseille Université, Université de Toulon, CNRS, IRD, MIO, 13288, Marseille, CEDEX 09, France
Valérie Michotey
Aix-Marseille Université, Université de Toulon, CNRS, IRD, MIO, 13288, Marseille, CEDEX 09, France
Florian Deman
Analytical, Environmental and Geo-Chemistry, Earth System Sciences
Research Group, Vrije Universiteit Brussel, 1050 Brussels, Belgium
François Fripiat
Max Planck Institute for Chemistry, 55128 Mainz, Germany
Sophie Guasco
Aix-Marseille Université, Université de Toulon, CNRS, IRD, MIO, 13288, Marseille, CEDEX 09, France
Natacha Brion
Analytical, Environmental and Geo-Chemistry, Earth System Sciences
Research Group, Vrije Universiteit Brussel, 1050 Brussels, Belgium
Nolwenn Lemaitre
Analytical, Environmental and Geo-Chemistry, Earth System Sciences
Research Group, Vrije Universiteit Brussel, 1050 Brussels, Belgium
Laboratoire des Sciences de l'Environnement MARin, CNRS UMR 6539, Institut Universitaire Européen de la Mer, 29280 Plouzané, France
Department of Earth Sciences, Institute of Geochemistry and
Petrology, ETH-Zürich, 8092 Zürich, Switzerland
Manon Tonnard
Laboratoire des Sciences de l'Environnement MARin, CNRS UMR 6539, Institut Universitaire Européen de la Mer, 29280 Plouzané, France
Institute for Marine and Antarctic Studies, University of Tasmania,
Hobart, TAS 7001, Australia
Morgane Gallinari
Laboratoire des Sciences de l'Environnement MARin, CNRS UMR 6539, Institut Universitaire Européen de la Mer, 29280 Plouzané, France
Hélène Planquette
Laboratoire des Sciences de l'Environnement MARin, CNRS UMR 6539, Institut Universitaire Européen de la Mer, 29280 Plouzané, France
Frédéric Planchon
Laboratoire des Sciences de l'Environnement MARin, CNRS UMR 6539, Institut Universitaire Européen de la Mer, 29280 Plouzané, France
Géraldine Sarthou
Laboratoire des Sciences de l'Environnement MARin, CNRS UMR 6539, Institut Universitaire Européen de la Mer, 29280 Plouzané, France
Marc Elskens
Analytical, Environmental and Geo-Chemistry, Earth System Sciences
Research Group, Vrije Universiteit Brussel, 1050 Brussels, Belgium
Julie LaRoche
Department of Biology, Dalhousie University, B3H 4R2 Halifax, Nova Scotia, Canada
Lei Chou
Service de Biogéochimie et Modélisation du Système Terre,
Université Libre de Bruxelles, 1050 Brussels, Belgium
Frank Dehairs
Analytical, Environmental and Geo-Chemistry, Earth System Sciences
Research Group, Vrije Universiteit Brussel, 1050 Brussels, Belgium
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Latest update: 19 Nov 2025
Short summary
Dinitrogen fixation and primary production were investigated using stable isotope incubation experiments along two transects off the Western Iberian Margin in May 2014 close to the end of the phytoplankton spring bloom. We observed substantial N2 fixation activities (up to 1533 µmol N m-2 d-1) associated with a predominance of unicellular cyanobacteria and non-cyanobacterial diazotrophs, which seemed to be promoted by the presence of bloom-derived organic matter and excess phosphorus.
Dinitrogen fixation and primary production were investigated using stable isotope incubation...
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