Continuous moulting by Antarctic krill drives major pulses of carbon export in the north Scotia Sea, Southern Ocean
Antarctic krill play an important role in biogeochemical cycles and can potentially generate high-particulate organic carbon (POC) fluxes to the deep ocean. They also have an unusual trait of moulting continuously throughout their life-cycle. We determine the krill seasonal contribution to POC flux...
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ftpubmed:oai:pubmedcentral.nih.gov:7699634 2023-05-15T13:46:03+02:00 Continuous moulting by Antarctic krill drives major pulses of carbon export in the north Scotia Sea, Southern Ocean Manno, C. Fielding, S. Stowasser, G. Murphy, E. J. Thorpe, S. E. Tarling, G. A. 2020-11-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7699634/ http://www.ncbi.nlm.nih.gov/pubmed/33247126 https://doi.org/10.1038/s41467-020-19956-7 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7699634/ http://www.ncbi.nlm.nih.gov/pubmed/33247126 http://dx.doi.org/10.1038/s41467-020-19956-7 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Nat Commun Article Text 2020 ftpubmed https://doi.org/10.1038/s41467-020-19956-7 2020-12-06T02:01:31Z Antarctic krill play an important role in biogeochemical cycles and can potentially generate high-particulate organic carbon (POC) fluxes to the deep ocean. They also have an unusual trait of moulting continuously throughout their life-cycle. We determine the krill seasonal contribution to POC flux in terms of faecal pellets (FP), exuviae and carcasses from sediment trap samples collected in the Southern Ocean. We found that krill moulting generated an exuviae flux of similar order to that of FP, together accounting for 87% of an annual POC flux (22.8 g m(−2) y(−1)). Using an inverse modelling approach, we determined the krill population size necessary to generate this flux peaked at 261 g m(−2). This study shows the important role of krill exuviae as a vector for POC flux. Since krill moulting cycle depends on temperature, our results highlight the sensitivity of POC flux to rapid regional environmental change. Text Antarc* Antarctic Antarctic Krill Scotia Sea Southern Ocean PubMed Central (PMC) Antarctic Scotia Sea Southern Ocean Nature Communications 11 1 |
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Article Manno, C. Fielding, S. Stowasser, G. Murphy, E. J. Thorpe, S. E. Tarling, G. A. Continuous moulting by Antarctic krill drives major pulses of carbon export in the north Scotia Sea, Southern Ocean |
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Article |
description |
Antarctic krill play an important role in biogeochemical cycles and can potentially generate high-particulate organic carbon (POC) fluxes to the deep ocean. They also have an unusual trait of moulting continuously throughout their life-cycle. We determine the krill seasonal contribution to POC flux in terms of faecal pellets (FP), exuviae and carcasses from sediment trap samples collected in the Southern Ocean. We found that krill moulting generated an exuviae flux of similar order to that of FP, together accounting for 87% of an annual POC flux (22.8 g m(−2) y(−1)). Using an inverse modelling approach, we determined the krill population size necessary to generate this flux peaked at 261 g m(−2). This study shows the important role of krill exuviae as a vector for POC flux. Since krill moulting cycle depends on temperature, our results highlight the sensitivity of POC flux to rapid regional environmental change. |
format |
Text |
author |
Manno, C. Fielding, S. Stowasser, G. Murphy, E. J. Thorpe, S. E. Tarling, G. A. |
author_facet |
Manno, C. Fielding, S. Stowasser, G. Murphy, E. J. Thorpe, S. E. Tarling, G. A. |
author_sort |
Manno, C. |
title |
Continuous moulting by Antarctic krill drives major pulses of carbon export in the north Scotia Sea, Southern Ocean |
title_short |
Continuous moulting by Antarctic krill drives major pulses of carbon export in the north Scotia Sea, Southern Ocean |
title_full |
Continuous moulting by Antarctic krill drives major pulses of carbon export in the north Scotia Sea, Southern Ocean |
title_fullStr |
Continuous moulting by Antarctic krill drives major pulses of carbon export in the north Scotia Sea, Southern Ocean |
title_full_unstemmed |
Continuous moulting by Antarctic krill drives major pulses of carbon export in the north Scotia Sea, Southern Ocean |
title_sort |
continuous moulting by antarctic krill drives major pulses of carbon export in the north scotia sea, southern ocean |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7699634/ http://www.ncbi.nlm.nih.gov/pubmed/33247126 https://doi.org/10.1038/s41467-020-19956-7 |
geographic |
Antarctic Scotia Sea Southern Ocean |
geographic_facet |
Antarctic Scotia Sea Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Scotia Sea Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Scotia Sea Southern Ocean |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7699634/ http://www.ncbi.nlm.nih.gov/pubmed/33247126 http://dx.doi.org/10.1038/s41467-020-19956-7 |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-020-19956-7 |
container_title |
Nature Communications |
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11 |
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1 |
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1766235468009046016 |