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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Online Access: | http://nora.nerc.ac.uk/id/eprint/529037/ https://nora.nerc.ac.uk/id/eprint/529037/1/s41467-020-19956-7.pdf https://www.nature.com/articles/s41467-020-19956-7 |
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ftnerc:oai:nora.nerc.ac.uk:529037 2023-05-15T13:41:45+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 text http://nora.nerc.ac.uk/id/eprint/529037/ https://nora.nerc.ac.uk/id/eprint/529037/1/s41467-020-19956-7.pdf https://www.nature.com/articles/s41467-020-19956-7 en eng Nature Research https://nora.nerc.ac.uk/id/eprint/529037/1/s41467-020-19956-7.pdf Manno, C. orcid:0000-0002-3337-6173 Fielding, S. orcid:0000-0002-3152-4742 Stowasser, G. orcid:0000-0002-0595-0772 Murphy, E.J. orcid:0000-0002-7369-9196 Thorpe, S.E. orcid:0000-0002-5193-6955 Tarling, G.A. orcid:0000-0002-3753-5899 . 2020 Continuous moulting by Antarctic krill drives major pulses of carbon export in the north Scotia Sea, Southern Ocean. Nature Communications, 11 (1), 6051. 8, pp. https://doi.org/10.1038/s41467-020-19956-7 <https://doi.org/10.1038/s41467-020-19956-7> cc_by_4 CC-BY Publication - Article PeerReviewed 2020 ftnerc https://doi.org/10.1038/s41467-020-19956-7 2023-02-04T19:51:22Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Scotia Sea Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Scotia Sea Nature Communications 11 1 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
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 |
Article in Journal/Newspaper |
author |
Manno, C. Fielding, S. Stowasser, G. Murphy, E.J. Thorpe, S.E. Tarling, G.A. |
spellingShingle |
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 |
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 Research |
publishDate |
2020 |
url |
http://nora.nerc.ac.uk/id/eprint/529037/ https://nora.nerc.ac.uk/id/eprint/529037/1/s41467-020-19956-7.pdf https://www.nature.com/articles/s41467-020-19956-7 |
geographic |
Antarctic Southern Ocean Scotia Sea |
geographic_facet |
Antarctic Southern Ocean Scotia Sea |
genre |
Antarc* Antarctic Antarctic Krill Scotia Sea Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Scotia Sea Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/529037/1/s41467-020-19956-7.pdf Manno, C. orcid:0000-0002-3337-6173 Fielding, S. orcid:0000-0002-3152-4742 Stowasser, G. orcid:0000-0002-0595-0772 Murphy, E.J. orcid:0000-0002-7369-9196 Thorpe, S.E. orcid:0000-0002-5193-6955 Tarling, G.A. orcid:0000-0002-3753-5899 . 2020 Continuous moulting by Antarctic krill drives major pulses of carbon export in the north Scotia Sea, Southern Ocean. Nature Communications, 11 (1), 6051. 8, pp. https://doi.org/10.1038/s41467-020-19956-7 <https://doi.org/10.1038/s41467-020-19956-7> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-020-19956-7 |
container_title |
Nature Communications |
container_volume |
11 |
container_issue |
1 |
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1766157166624899072 |