Seasonal variability of the inorganic carbon system in the Amundsen Gulf region of the southeastern Beaufort Sea
During a year-round occupation of Amundsen Gulf in the Canadian Arctic Archipelago dissolved inorganic and organic carbon (DIC, DOC), total alkalinity (TA), partial pressure of CO(2) (pCO(2)) and related parameters were measured over a full annual cycle. A two-box model was used to identify and asse...
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Online Access: | https://doi.org/10.4319/lo.2011.56.1.0303 http://hdl.handle.net/10222/27447 |
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ftdalhouse:oai:DalSpace.library.dal.ca:10222/27447 2023-05-15T13:22:52+02:00 Seasonal variability of the inorganic carbon system in the Amundsen Gulf region of the southeastern Beaufort Sea Shadwick, E. H. Thomas, H. Chierici, M. Else, B. Fransson, A. Michel, C. Miller, L. A. Mucci, A. Niemi, A. Papakyriakou, T. N. Tremblay, J. -E 2013-06-19T18:05:48Z https://doi.org/10.4319/lo.2011.56.1.0303 http://hdl.handle.net/10222/27447 unknown Limnology and Oceanography Shadwick, E. H., H. Thomas, M. Chierici, B. Else, et al. 2011. "Seasonal variability of the inorganic carbon system in the Amundsen Gulf region of the southeastern Beaufort Sea." Limnology and Oceanography 56(1): 303-322. 0024-3590 http://dx.doi.org/10.4319/lo.2011.56.1.0303 http://hdl.handle.net/10222/27447 56 1 303 article 2013 ftdalhouse https://doi.org/10.4319/lo.2011.56.1.0303 2021-12-29T18:08:42Z During a year-round occupation of Amundsen Gulf in the Canadian Arctic Archipelago dissolved inorganic and organic carbon (DIC, DOC), total alkalinity (TA), partial pressure of CO(2) (pCO(2)) and related parameters were measured over a full annual cycle. A two-box model was used to identify and assess physical, biological, and chemical processes responsible for the seasonal variability of DIC, DOC, TA, and pCO(2). Surface waters were undersaturated with respect to atmospheric CO(2) throughout the year and constituted a net sink of 1.2 mol C m(-2) yr(-1), with ice coverage and ice formation limiting the CO(2) uptake during winter. CO(2) uptake was largely driven by under ice and open-water biological activity, with high subsequent export of organic matter to the deeper water column. Annual net community production (NCP) was 2.1 mol C m(-2) yr(-1). Approximately one-half of the overall NCP during the productive season (4.1 mol C m(-2) from Apr through Aug) was generated by under-ice algae and amounted to 1.9 mol C m(-2) over this period. The surface layer was autotrophic, while the overall heterotrophy of the system was fueled by either sedimentary or lateral inputs of organic matter. Article in Journal/Newspaper Amundsen Gulf Arctic Archipelago Arctic Beaufort Sea Canadian Arctic Archipelago ice algae Dalhousie University: DalSpace Institutional Repository Arctic Canadian Arctic Archipelago Limnology and Oceanography 56 1 303 322 |
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Open Polar |
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Dalhousie University: DalSpace Institutional Repository |
op_collection_id |
ftdalhouse |
language |
unknown |
description |
During a year-round occupation of Amundsen Gulf in the Canadian Arctic Archipelago dissolved inorganic and organic carbon (DIC, DOC), total alkalinity (TA), partial pressure of CO(2) (pCO(2)) and related parameters were measured over a full annual cycle. A two-box model was used to identify and assess physical, biological, and chemical processes responsible for the seasonal variability of DIC, DOC, TA, and pCO(2). Surface waters were undersaturated with respect to atmospheric CO(2) throughout the year and constituted a net sink of 1.2 mol C m(-2) yr(-1), with ice coverage and ice formation limiting the CO(2) uptake during winter. CO(2) uptake was largely driven by under ice and open-water biological activity, with high subsequent export of organic matter to the deeper water column. Annual net community production (NCP) was 2.1 mol C m(-2) yr(-1). Approximately one-half of the overall NCP during the productive season (4.1 mol C m(-2) from Apr through Aug) was generated by under-ice algae and amounted to 1.9 mol C m(-2) over this period. The surface layer was autotrophic, while the overall heterotrophy of the system was fueled by either sedimentary or lateral inputs of organic matter. |
format |
Article in Journal/Newspaper |
author |
Shadwick, E. H. Thomas, H. Chierici, M. Else, B. Fransson, A. Michel, C. Miller, L. A. Mucci, A. Niemi, A. Papakyriakou, T. N. Tremblay, J. -E |
spellingShingle |
Shadwick, E. H. Thomas, H. Chierici, M. Else, B. Fransson, A. Michel, C. Miller, L. A. Mucci, A. Niemi, A. Papakyriakou, T. N. Tremblay, J. -E Seasonal variability of the inorganic carbon system in the Amundsen Gulf region of the southeastern Beaufort Sea |
author_facet |
Shadwick, E. H. Thomas, H. Chierici, M. Else, B. Fransson, A. Michel, C. Miller, L. A. Mucci, A. Niemi, A. Papakyriakou, T. N. Tremblay, J. -E |
author_sort |
Shadwick, E. H. |
title |
Seasonal variability of the inorganic carbon system in the Amundsen Gulf region of the southeastern Beaufort Sea |
title_short |
Seasonal variability of the inorganic carbon system in the Amundsen Gulf region of the southeastern Beaufort Sea |
title_full |
Seasonal variability of the inorganic carbon system in the Amundsen Gulf region of the southeastern Beaufort Sea |
title_fullStr |
Seasonal variability of the inorganic carbon system in the Amundsen Gulf region of the southeastern Beaufort Sea |
title_full_unstemmed |
Seasonal variability of the inorganic carbon system in the Amundsen Gulf region of the southeastern Beaufort Sea |
title_sort |
seasonal variability of the inorganic carbon system in the amundsen gulf region of the southeastern beaufort sea |
publishDate |
2013 |
url |
https://doi.org/10.4319/lo.2011.56.1.0303 http://hdl.handle.net/10222/27447 |
geographic |
Arctic Canadian Arctic Archipelago |
geographic_facet |
Arctic Canadian Arctic Archipelago |
genre |
Amundsen Gulf Arctic Archipelago Arctic Beaufort Sea Canadian Arctic Archipelago ice algae |
genre_facet |
Amundsen Gulf Arctic Archipelago Arctic Beaufort Sea Canadian Arctic Archipelago ice algae |
op_relation |
Limnology and Oceanography Shadwick, E. H., H. Thomas, M. Chierici, B. Else, et al. 2011. "Seasonal variability of the inorganic carbon system in the Amundsen Gulf region of the southeastern Beaufort Sea." Limnology and Oceanography 56(1): 303-322. 0024-3590 http://dx.doi.org/10.4319/lo.2011.56.1.0303 http://hdl.handle.net/10222/27447 56 1 303 |
op_doi |
https://doi.org/10.4319/lo.2011.56.1.0303 |
container_title |
Limnology and Oceanography |
container_volume |
56 |
container_issue |
1 |
container_start_page |
303 |
op_container_end_page |
322 |
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1766367523839672320 |