Carbon fluxes in the Canadian Arctic: patterns and drivers of bacterial abundance, production and respiration on the Beaufort Sea margin
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 processin...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00024167 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, D. Matsuoka, A. Raimbault, P. Joux, F. 2012-09 electronic https://doi.org/10.5194/bg-9-3679-2012 https://noa.gwlb.de/receive/cop_mods_00024167 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024122/bg-9-3679-2012.pdf https://bg.copernicus.org/articles/9/3679/2012/bg-9-3679-2012.pdf eng eng Copernicus Publications Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-9-3679-2012 https://noa.gwlb.de/receive/cop_mods_00024167 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024122/bg-9-3679-2012.pdf https://bg.copernicus.org/articles/9/3679/2012/bg-9-3679-2012.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2012 ftnonlinearchiv https://doi.org/10.5194/bg-9-3679-2012 2022-02-08T22:50:18Z 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 Niedersächsisches Online-Archiv NOA Arctic Arctic Ocean Mackenzie River Biogeosciences 9 9 3679 3692 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Ortega-Retuerta, E. Jeffrey, W. H. Babin, M. Bélanger, S. Benner, R. Marie, D. Matsuoka, A. Raimbault, P. Joux, F. Carbon fluxes in the Canadian Arctic: patterns and drivers of bacterial abundance, production and respiration on the Beaufort Sea margin |
topic_facet |
article Verlagsveröffentlichung |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Ortega-Retuerta, E. Jeffrey, W. H. Babin, M. Bélanger, S. Benner, R. Marie, D. Matsuoka, A. Raimbault, P. Joux, F. |
author_facet |
Ortega-Retuerta, E. Jeffrey, W. H. Babin, M. Bélanger, S. Benner, R. Marie, D. Matsuoka, A. Raimbault, P. 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 |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/bg-9-3679-2012 https://noa.gwlb.de/receive/cop_mods_00024167 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024122/bg-9-3679-2012.pdf https://bg.copernicus.org/articles/9/3679/2012/bg-9-3679-2012.pdf |
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_relation |
Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-9-3679-2012 https://noa.gwlb.de/receive/cop_mods_00024167 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024122/bg-9-3679-2012.pdf https://bg.copernicus.org/articles/9/3679/2012/bg-9-3679-2012.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-9-3679-2012 |
container_title |
Biogeosciences |
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9 |
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9 |
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3679 |
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3692 |
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