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://hal.science/hal-01253997 https://hal.science/hal-01253997/document https://hal.science/hal-01253997/file/bg-9-3679-2012.pdf https://doi.org/10.5194/bg-9-3679-2012 |
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ftunivaixmarseil:oai:HAL:hal-01253997v1 |
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Open Polar |
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Aix-Marseille Université: HAL |
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English |
topic |
[SDV]Life Sciences [q-bio] [SDE]Environmental Sciences |
spellingShingle |
[SDV]Life Sciences [q-bio] [SDE]Environmental Sciences 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 |
[SDV]Life Sciences [q-bio] [SDE]Environmental Sciences |
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) Observatoire océanologique de Banyuls (OOB) 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) 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) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-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) 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)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) 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://hal.science/hal-01253997 https://hal.science/hal-01253997/document https://hal.science/hal-01253997/file/bg-9-3679-2012.pdf https://doi.org/10.5194/bg-9-3679-2012 |
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 |
ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-01253997 Biogeosciences, 2012, 9 (9), pp.3679-3692. ⟨10.5194/bg-9-3679-2012⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-9-3679-2012 hal-01253997 https://hal.science/hal-01253997 https://hal.science/hal-01253997/document https://hal.science/hal-01253997/file/bg-9-3679-2012.pdf doi:10.5194/bg-9-3679-2012 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
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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1790596608257163264 |
spelling |
ftunivaixmarseil:oai:HAL:hal-01253997v1 2024-02-11T10:00:53+01:00 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) Observatoire océanologique de Banyuls (OOB) 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) 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) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-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) 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)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) 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 https://hal.science/hal-01253997 https://hal.science/hal-01253997/document https://hal.science/hal-01253997/file/bg-9-3679-2012.pdf https://doi.org/10.5194/bg-9-3679-2012 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-9-3679-2012 hal-01253997 https://hal.science/hal-01253997 https://hal.science/hal-01253997/document https://hal.science/hal-01253997/file/bg-9-3679-2012.pdf doi:10.5194/bg-9-3679-2012 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-01253997 Biogeosciences, 2012, 9 (9), pp.3679-3692. ⟨10.5194/bg-9-3679-2012⟩ [SDV]Life Sciences [q-bio] [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2012 ftunivaixmarseil https://doi.org/10.5194/bg-9-3679-2012 2024-01-23T23:44:45Z 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 Aix-Marseille Université: HAL Arctic Arctic Ocean Mackenzie River Biogeosciences 9 9 3679 3692 |