C:N ratios in the mixed layer during the productive season in the Northeast Atlantic Ocean
Redfield stoichiometry has proved a robust paradigm for the understanding of biological production and export in the ocean on a long-term and a large-scale basis. However, deviations of carbon and nitrogen uptake ratios from the Redfield ratio have been reported. A comprehensive data set including a...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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ftoceanrep:oai:oceanrep.geomar.de:5215 2023-05-15T17:41:20+02:00 C:N ratios in the mixed layer during the productive season in the Northeast Atlantic Ocean Körtzinger, Arne Koeve, Wolfgang Kähler, Paul Mintrop, Ludger 2001 text https://oceanrep.geomar.de/id/eprint/5215/ https://oceanrep.geomar.de/id/eprint/5215/1/1-s2.0-S0967063700000510-main.pdf https://doi.org/10.1016/S0967-0637(00)00051-0 en eng Elsevier https://oceanrep.geomar.de/id/eprint/5215/1/1-s2.0-S0967063700000510-main.pdf Körtzinger, A. , Koeve, W. , Kähler, P. and Mintrop, L. (2001) C:N ratios in the mixed layer during the productive season in the Northeast Atlantic Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 48 . pp. 661-688. DOI 10.1016/S0967-0637(00)00051-0 <https://doi.org/10.1016/S0967-0637%2800%2900051-0>. doi:10.1016/S0967-0637(00)00051-0 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2001 ftoceanrep https://doi.org/10.1016/S0967-0637(00)00051-0 2023-04-07T14:50:45Z Redfield stoichiometry has proved a robust paradigm for the understanding of biological production and export in the ocean on a long-term and a large-scale basis. However, deviations of carbon and nitrogen uptake ratios from the Redfield ratio have been reported. A comprehensive data set including all carbon and nitrogen pools relevant to biological production in the surface ocean (DIC, DIN, DOC, DON, POC, PON) was used to calculate seasonal new production based on carbon and nitrogen uptake in summer along 20°W in the northeast Atlantic Ocean. The 20°W transect between 30 and 60°N covers different trophic states and seasonal stages of the productive surface layer, including early bloom, bloom, post-bloom and non-bloom situations. The spatial pattern has elements of a seasonal progression. We also calculated exported production, i.e., that part of seasonal new production not accumulated in particulate and dissolved pools, again separately for carbon and nitrogen. The pairs of estimates of `seasonal new production’ and `exported production’ allowed us to calculate the C : N ratios of these quantities. While suspended particulate matter in the mixed layer largely conforms to Redfield stoichiometry, marked deviations were observed in carbon and nitrogen uptake and export with progressing season or nutrient depletion. The spring system was characterized by nitrogen overconsumption and the oligotrophic summer system by a marked carbon overconsumption. The C : N ratios of seasonal new as well as exported production increase from early bloom values of 5–6 to values of 10–16 in the post-bloom/oligotrophic system. The summertime accumulation of nitrogen-poor dissolved organic matter can explain only part of this shift. Article in Journal/Newspaper Northeast Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Deep Sea Research Part I: Oceanographic Research Papers 48 3 661 688 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Redfield stoichiometry has proved a robust paradigm for the understanding of biological production and export in the ocean on a long-term and a large-scale basis. However, deviations of carbon and nitrogen uptake ratios from the Redfield ratio have been reported. A comprehensive data set including all carbon and nitrogen pools relevant to biological production in the surface ocean (DIC, DIN, DOC, DON, POC, PON) was used to calculate seasonal new production based on carbon and nitrogen uptake in summer along 20°W in the northeast Atlantic Ocean. The 20°W transect between 30 and 60°N covers different trophic states and seasonal stages of the productive surface layer, including early bloom, bloom, post-bloom and non-bloom situations. The spatial pattern has elements of a seasonal progression. We also calculated exported production, i.e., that part of seasonal new production not accumulated in particulate and dissolved pools, again separately for carbon and nitrogen. The pairs of estimates of `seasonal new production’ and `exported production’ allowed us to calculate the C : N ratios of these quantities. While suspended particulate matter in the mixed layer largely conforms to Redfield stoichiometry, marked deviations were observed in carbon and nitrogen uptake and export with progressing season or nutrient depletion. The spring system was characterized by nitrogen overconsumption and the oligotrophic summer system by a marked carbon overconsumption. The C : N ratios of seasonal new as well as exported production increase from early bloom values of 5–6 to values of 10–16 in the post-bloom/oligotrophic system. The summertime accumulation of nitrogen-poor dissolved organic matter can explain only part of this shift. |
format |
Article in Journal/Newspaper |
author |
Körtzinger, Arne Koeve, Wolfgang Kähler, Paul Mintrop, Ludger |
spellingShingle |
Körtzinger, Arne Koeve, Wolfgang Kähler, Paul Mintrop, Ludger C:N ratios in the mixed layer during the productive season in the Northeast Atlantic Ocean |
author_facet |
Körtzinger, Arne Koeve, Wolfgang Kähler, Paul Mintrop, Ludger |
author_sort |
Körtzinger, Arne |
title |
C:N ratios in the mixed layer during the productive season in the Northeast Atlantic Ocean |
title_short |
C:N ratios in the mixed layer during the productive season in the Northeast Atlantic Ocean |
title_full |
C:N ratios in the mixed layer during the productive season in the Northeast Atlantic Ocean |
title_fullStr |
C:N ratios in the mixed layer during the productive season in the Northeast Atlantic Ocean |
title_full_unstemmed |
C:N ratios in the mixed layer during the productive season in the Northeast Atlantic Ocean |
title_sort |
c:n ratios in the mixed layer during the productive season in the northeast atlantic ocean |
publisher |
Elsevier |
publishDate |
2001 |
url |
https://oceanrep.geomar.de/id/eprint/5215/ https://oceanrep.geomar.de/id/eprint/5215/1/1-s2.0-S0967063700000510-main.pdf https://doi.org/10.1016/S0967-0637(00)00051-0 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/5215/1/1-s2.0-S0967063700000510-main.pdf Körtzinger, A. , Koeve, W. , Kähler, P. and Mintrop, L. (2001) C:N ratios in the mixed layer during the productive season in the Northeast Atlantic Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 48 . pp. 661-688. DOI 10.1016/S0967-0637(00)00051-0 <https://doi.org/10.1016/S0967-0637%2800%2900051-0>. doi:10.1016/S0967-0637(00)00051-0 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/S0967-0637(00)00051-0 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
48 |
container_issue |
3 |
container_start_page |
661 |
op_container_end_page |
688 |
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1766142822615875584 |