Nitrogen and phosphorus recycling mediated by copepods and response of bacterioplankton community from three contrasting areas in the western tropical South Pacific (20° S)
Programa de Doctorado en Oceanografía, Departamento de
Oceanografía, Facultad de Ciencias Naturales y Oceanográficas,
Universidad de Concepción, Concepción, Chile
Sorbonne
Université, UPMC Univ Paris 06, Laboratoire d'Océanographie
Microbienne (LOMIC), Observatoire Océanologique de Banyuls/Mer, 66650,
Banyuls/Mer, France
François Carlotti
Aix-Marseille Univ, Universite de Toulon,
CNRS, IRD, OSU PYTHEAS, Mediterranean Institute of Oceanography MIO, UM 110,
13288, Marseille, Cedex 09, France
Ruben Escribano
Departamento de Oceanografía,
Universidad de Concepción, Concepción, Chile
Instituto
Milenio de Oceanografía, Universidad de Concepción, Concepción,
Chile
Aix-Marseille Univ, Universite de Toulon,
CNRS, IRD, OSU PYTHEAS, Mediterranean Institute of Oceanography MIO, UM 110,
13288, Marseille, Cedex 09, France
Marc Pagano
Aix-Marseille Univ, Universite de Toulon,
CNRS, IRD, OSU PYTHEAS, Mediterranean Institute of Oceanography MIO, UM 110,
13288, Marseille, Cedex 09, France
Verónica Molina
Departamento de Biología and Programa de Biodiversidad,
Facultad de Ciencias Naturales y Exactas, Universidad de Playa Ancha, Playa
Ancha, Valparaíso, Chile
Camila Fernandez
Sorbonne
Université, UPMC Univ Paris 06, Laboratoire d'Océanographie
Microbienne (LOMIC), Observatoire Océanologique de Banyuls/Mer, 66650,
Banyuls/Mer, France
FONDAP INCAR center (15110027), and
PFB-31 COPAS Sur Austral Program, Departamento de Oceanografía,
Universidad de Concepción, Concepción, Chile
Centro FONDAP
de Investigación en Dinámica de Ecosistemas Marinos de Altas
Latitudes (IDEAL), Valdivia, Chile
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The role of N and P released by copepods on biogeochemical cycles and the microbial community during the OUTPACE cruise was studied. In the presence of copepods, NH4+ and DON increase, and an enhanced remineralization was observed. A shift in active bacterial composition was observed, linked with changes in nutrient concentrations. Copepods can be a source of (in)organic compounds for bacterial communities that contribute to nutrient recycling and regenerated production in the photic zone.
The role of N and P released by copepods on biogeochemical cycles and the microbial community...
