Natalia Llopis Monferrer, University of Western Brittany, Institut Universitaire Européen de la Mer, Plouzané, France, Brivaëla Moriceau, CNRS, LEMAR, IUEM Institut Universitaire Européen de la Mer, Plouzané, France, Andres Gutierrez-Rodriguez, National Institute of Water and Atmospheric Research, New Zealand, Marine Biogeochemistry, Wellington, New Zealand, Fabrice Not, CNRS, Station Biologique, Roscoff, France, Paul Tréguer, University of Western Brittany, Brest, France and Aude Leynaert, CNRS, LEMAR IUEM, Plouzané, France