Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula
Krill and salps are important for carbon flux in the Southern Ocean, but the extent of their contribution and the consequences of shifts in dominance from krill to salps remain unclear. We present a direct comparison of the contribution of krill and salp faecal pellets (FP) to vertical carbon flux a...
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Springer Nature
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Online Access: | https://epic.awi.de/id/eprint/55068/ https://epic.awi.de/id/eprint/55068/1/s41467-021-27436-9.pdf https://doi.org/10.1038/s41467-021-27436-9 https://hdl.handle.net/10013/epic.d32e42b0-846e-46ea-a399-9f42ab36fa33 |
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ftawi:oai:epic.awi.de:55068 2023-07-16T03:54:38+02:00 Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula Pauli, Nora-Charlotte Flintrop, Clara M. Konrad, Christian Pakhomov, Evgeny A. Swoboda, Steffen Koch, Florian Wang, Xin-Liang Zhang, Ji-Chang Brierley, Andrew S. Bernasconi, Matteo Meyer, Bettina Iversen, Morten 2021-12-09 application/pdf https://epic.awi.de/id/eprint/55068/ https://epic.awi.de/id/eprint/55068/1/s41467-021-27436-9.pdf https://doi.org/10.1038/s41467-021-27436-9 https://hdl.handle.net/10013/epic.d32e42b0-846e-46ea-a399-9f42ab36fa33 unknown Springer Nature https://epic.awi.de/id/eprint/55068/1/s41467-021-27436-9.pdf Pauli, N. C. orcid:0000-0001-8916-8229 , Flintrop, C. M. orcid:0000-0002-5711-0521 , Konrad, C. , Pakhomov, E. A. , Swoboda, S. , Koch, F. orcid:0000-0001-7107-4160 , Wang, X. L. , Zhang, J. C. , Brierley, A. S. , Bernasconi, M. , Meyer, B. orcid:0000-0001-6804-9896 and Iversen, M. orcid:0000-0002-5287-1110 (2021) Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula , Nature Communications, 12 , p. 7168 . doi:10.1038/s41467-021-27436-9 <https://doi.org/10.1038/s41467-021-27436-9> , hdl:10013/epic.d32e42b0-846e-46ea-a399-9f42ab36fa33 EPIC3Nature Communications, Springer Nature, 12, pp. 7168 Article peerRev 2021 ftawi https://doi.org/10.1038/s41467-021-27436-9 2023-06-25T23:19:57Z Krill and salps are important for carbon flux in the Southern Ocean, but the extent of their contribution and the consequences of shifts in dominance from krill to salps remain unclear. We present a direct comparison of the contribution of krill and salp faecal pellets (FP) to vertical carbon flux at the Antarctic Peninsula using a combination of sediment traps, FP production, carbon content, microbial degradation, and krill and salp abundances. Salps produce 4-fold more FP carbon than krill, but the FP from both species contribute equally to the carbon flux at 300 m, accounting for 75% of total carbon. Krill FP are exported to 72% to 300 m, while 80% of salp FP are retained in the mixed layer due to fragmentation. Thus, declining krill abundances could lead to decreased carbon flux, indicating that the Antarctic Peninsula could become a less efficient carbon sink for anthropogenic CO2 in future. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Antarctic Peninsula Southern Ocean The Antarctic Nature Communications 12 1 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Krill and salps are important for carbon flux in the Southern Ocean, but the extent of their contribution and the consequences of shifts in dominance from krill to salps remain unclear. We present a direct comparison of the contribution of krill and salp faecal pellets (FP) to vertical carbon flux at the Antarctic Peninsula using a combination of sediment traps, FP production, carbon content, microbial degradation, and krill and salp abundances. Salps produce 4-fold more FP carbon than krill, but the FP from both species contribute equally to the carbon flux at 300 m, accounting for 75% of total carbon. Krill FP are exported to 72% to 300 m, while 80% of salp FP are retained in the mixed layer due to fragmentation. Thus, declining krill abundances could lead to decreased carbon flux, indicating that the Antarctic Peninsula could become a less efficient carbon sink for anthropogenic CO2 in future. |
format |
Article in Journal/Newspaper |
author |
Pauli, Nora-Charlotte Flintrop, Clara M. Konrad, Christian Pakhomov, Evgeny A. Swoboda, Steffen Koch, Florian Wang, Xin-Liang Zhang, Ji-Chang Brierley, Andrew S. Bernasconi, Matteo Meyer, Bettina Iversen, Morten |
spellingShingle |
Pauli, Nora-Charlotte Flintrop, Clara M. Konrad, Christian Pakhomov, Evgeny A. Swoboda, Steffen Koch, Florian Wang, Xin-Liang Zhang, Ji-Chang Brierley, Andrew S. Bernasconi, Matteo Meyer, Bettina Iversen, Morten Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula |
author_facet |
Pauli, Nora-Charlotte Flintrop, Clara M. Konrad, Christian Pakhomov, Evgeny A. Swoboda, Steffen Koch, Florian Wang, Xin-Liang Zhang, Ji-Chang Brierley, Andrew S. Bernasconi, Matteo Meyer, Bettina Iversen, Morten |
author_sort |
Pauli, Nora-Charlotte |
title |
Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula |
title_short |
Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula |
title_full |
Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula |
title_fullStr |
Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula |
title_full_unstemmed |
Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula |
title_sort |
krill and salp faecal pellets contribute equally to the carbon flux at the antarctic peninsula |
publisher |
Springer Nature |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/55068/ https://epic.awi.de/id/eprint/55068/1/s41467-021-27436-9.pdf https://doi.org/10.1038/s41467-021-27436-9 https://hdl.handle.net/10013/epic.d32e42b0-846e-46ea-a399-9f42ab36fa33 |
geographic |
Antarctic Antarctic Peninsula Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
op_source |
EPIC3Nature Communications, Springer Nature, 12, pp. 7168 |
op_relation |
https://epic.awi.de/id/eprint/55068/1/s41467-021-27436-9.pdf Pauli, N. C. orcid:0000-0001-8916-8229 , Flintrop, C. M. orcid:0000-0002-5711-0521 , Konrad, C. , Pakhomov, E. A. , Swoboda, S. , Koch, F. orcid:0000-0001-7107-4160 , Wang, X. L. , Zhang, J. C. , Brierley, A. S. , Bernasconi, M. , Meyer, B. orcid:0000-0001-6804-9896 and Iversen, M. orcid:0000-0002-5287-1110 (2021) Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula , Nature Communications, 12 , p. 7168 . doi:10.1038/s41467-021-27436-9 <https://doi.org/10.1038/s41467-021-27436-9> , hdl:10013/epic.d32e42b0-846e-46ea-a399-9f42ab36fa33 |
op_doi |
https://doi.org/10.1038/s41467-021-27436-9 |
container_title |
Nature Communications |
container_volume |
12 |
container_issue |
1 |
_version_ |
1771540896567787520 |