Carbon fluxes in the Canadian Arctic: patterns and drivers of bacterial abundance, production and respiration on the Beaufort Sea margin
International audience During August 2009, measurements of bacterial abundance and nucleic acid content were made along with production and respiration in coastal waters of the Beaufort Sea (Arctic Ocean), an area influenced by the Mackenzie River inflow. The main purpose was to evaluate bacterial o...
Published in: | Biogeosciences |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2012
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Online Access: | https://doi.org/10.5194/bg-9-3679-2012 https://hal.archives-ouvertes.fr/hal-01253997/file/bg-9-3679-2012.pdf https://hal.archives-ouvertes.fr/hal-01253997 |
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Open Polar |
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fttriple |
language |
English |
topic |
envir geo |
spellingShingle |
envir geo Ortega-Retuerta, E. Jeffrey, W. H. Babin, M. Bélanger, S. Benner, R. Marie, Dominique Matsuoka, A. Raimbault, Patrick Joux, F. Carbon fluxes in the Canadian Arctic: patterns and drivers of bacterial abundance, production and respiration on the Beaufort Sea margin |
topic_facet |
envir geo |
description |
International audience During August 2009, measurements of bacterial abundance and nucleic acid content were made along with production and respiration in coastal waters of the Beaufort Sea (Arctic Ocean), an area influenced by the Mackenzie River inflow. The main purpose was to evaluate bacterial organic carbon processing with respect to local sources, mainly primary production and river inputs. Bacterial production and abundance generally decreased from river to offshore waters and from surface to deep waters. In contrast, the percentage of high nucleic acid bacteria was higher in deep waters rather than in surface or river waters. Statistical analyses indicated that bacterial production was primarily controlled by temperature and the availability of labile organic matter, as indicated by total dissolved amino acid concentrations. Direct comparisons of bacterial carbon demand and primary production indicated net heterotrophy was common in shelf waters. Net autotrophy was observed at stations in the Mackenzie River plume, suggesting that the carbon fixed in plume waters helped fuel net heterotrophy in the Beaufort Sea margin. |
author2 |
Laboratoire d'Océanographie Microbienne (LOMIC) Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Observatoire océanologique de Banyuls (OOB) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Center for Environmental Diagnostics and Bioremediation Pensacola (UWF University of West Florida Pensacola (UWF) Université Laval Québec (ULaval) Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Université du Québec à Rimouski (UQAR) University of South Carolina Columbia Diversité et Interactions au sein du Plancton Océanique (DIPO) Adaptation et diversité en milieu marin (AD2M) Station biologique de Roscoff Roscoff (SBR) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Station biologique de Roscoff Roscoff (SBR) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN) French National Research Agency ANR-BLAN08-1\₃10980 LEFE-CYBER programme CNES TOSCA programme European Space Agency University of West Florida US NSF 0713915 |
format |
Article in Journal/Newspaper |
author |
Ortega-Retuerta, E. Jeffrey, W. H. Babin, M. Bélanger, S. Benner, R. Marie, Dominique Matsuoka, A. Raimbault, Patrick Joux, F. |
author_facet |
Ortega-Retuerta, E. Jeffrey, W. H. Babin, M. Bélanger, S. Benner, R. Marie, Dominique Matsuoka, A. Raimbault, Patrick Joux, F. |
author_sort |
Ortega-Retuerta, E. |
title |
Carbon fluxes in the Canadian Arctic: patterns and drivers of bacterial abundance, production and respiration on the Beaufort Sea margin |
title_short |
Carbon fluxes in the Canadian Arctic: patterns and drivers of bacterial abundance, production and respiration on the Beaufort Sea margin |
title_full |
Carbon fluxes in the Canadian Arctic: patterns and drivers of bacterial abundance, production and respiration on the Beaufort Sea margin |
title_fullStr |
Carbon fluxes in the Canadian Arctic: patterns and drivers of bacterial abundance, production and respiration on the Beaufort Sea margin |
title_full_unstemmed |
Carbon fluxes in the Canadian Arctic: patterns and drivers of bacterial abundance, production and respiration on the Beaufort Sea margin |
title_sort |
carbon fluxes in the canadian arctic: patterns and drivers of bacterial abundance, production and respiration on the beaufort sea margin |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://doi.org/10.5194/bg-9-3679-2012 https://hal.archives-ouvertes.fr/hal-01253997/file/bg-9-3679-2012.pdf https://hal.archives-ouvertes.fr/hal-01253997 |
geographic |
Arctic Arctic Ocean Mackenzie River |
geographic_facet |
Arctic Arctic Ocean Mackenzie River |
genre |
Arctic Arctic Ocean Beaufort Sea Mackenzie river |
genre_facet |
Arctic Arctic Ocean Beaufort Sea Mackenzie river |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences Biogeosciences, European Geosciences Union, 2012, 9 (9), pp.3679-3692. ⟨10.5194/bg-9-3679-2012⟩ |
op_relation |
hal-01253997 doi:10.5194/bg-9-3679-2012 10670/1.119ls0 https://hal.archives-ouvertes.fr/hal-01253997/file/bg-9-3679-2012.pdf https://hal.archives-ouvertes.fr/hal-01253997 |
op_rights |
lic_creative-commons other |
op_doi |
https://doi.org/10.5194/bg-9-3679-2012 |
container_title |
Biogeosciences |
container_volume |
9 |
container_issue |
9 |
container_start_page |
3679 |
op_container_end_page |
3692 |
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1766328149100986368 |
spelling |
fttriple:oai:gotriple.eu:10670/1.119ls0 2023-05-15T14:56:07+02:00 Carbon fluxes in the Canadian Arctic: patterns and drivers of bacterial abundance, production and respiration on the Beaufort Sea margin Ortega-Retuerta, E. Jeffrey, W. H. Babin, M. Bélanger, S. Benner, R. Marie, Dominique Matsuoka, A. Raimbault, Patrick Joux, F. Laboratoire d'Océanographie Microbienne (LOMIC) Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Observatoire océanologique de Banyuls (OOB) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Center for Environmental Diagnostics and Bioremediation Pensacola (UWF University of West Florida Pensacola (UWF) Université Laval Québec (ULaval) Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Université du Québec à Rimouski (UQAR) University of South Carolina Columbia Diversité et Interactions au sein du Plancton Océanique (DIPO) Adaptation et diversité en milieu marin (AD2M) Station biologique de Roscoff Roscoff (SBR) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Station biologique de Roscoff Roscoff (SBR) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN) French National Research Agency ANR-BLAN08-1\₃10980 LEFE-CYBER programme CNES TOSCA programme European Space Agency University of West Florida US NSF 0713915 2012-01-01 https://doi.org/10.5194/bg-9-3679-2012 https://hal.archives-ouvertes.fr/hal-01253997/file/bg-9-3679-2012.pdf https://hal.archives-ouvertes.fr/hal-01253997 en eng HAL CCSD European Geosciences Union hal-01253997 doi:10.5194/bg-9-3679-2012 10670/1.119ls0 https://hal.archives-ouvertes.fr/hal-01253997/file/bg-9-3679-2012.pdf https://hal.archives-ouvertes.fr/hal-01253997 lic_creative-commons other Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences Biogeosciences, European Geosciences Union, 2012, 9 (9), pp.3679-3692. ⟨10.5194/bg-9-3679-2012⟩ envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2012 fttriple https://doi.org/10.5194/bg-9-3679-2012 2023-01-22T18:47:58Z International audience During August 2009, measurements of bacterial abundance and nucleic acid content were made along with production and respiration in coastal waters of the Beaufort Sea (Arctic Ocean), an area influenced by the Mackenzie River inflow. The main purpose was to evaluate bacterial organic carbon processing with respect to local sources, mainly primary production and river inputs. Bacterial production and abundance generally decreased from river to offshore waters and from surface to deep waters. In contrast, the percentage of high nucleic acid bacteria was higher in deep waters rather than in surface or river waters. Statistical analyses indicated that bacterial production was primarily controlled by temperature and the availability of labile organic matter, as indicated by total dissolved amino acid concentrations. Direct comparisons of bacterial carbon demand and primary production indicated net heterotrophy was common in shelf waters. Net autotrophy was observed at stations in the Mackenzie River plume, suggesting that the carbon fixed in plume waters helped fuel net heterotrophy in the Beaufort Sea margin. Article in Journal/Newspaper Arctic Arctic Ocean Beaufort Sea Mackenzie river Unknown Arctic Arctic Ocean Mackenzie River Biogeosciences 9 9 3679 3692 |