Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula
This study was part of the project “Population shift and ecosystem response – krill vs. salps” funded by the Lower Saxony Ministry of Science and Culture (MWK) lead by B.M. M.H.I., C.M.F., C.K. and S.S. were supported by the HGF Young Investigator Group SeaPump “Seasonal and regional food web intera...
Published in: | Nature Communications |
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Main Authors: | , , , , , , , , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2021
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Online Access: | http://hdl.handle.net/10023/24524 https://doi.org/10.1038/s41467-021-27436-9 |
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openpolar |
institution |
Open Polar |
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University of St Andrews: Digital Research Repository |
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ftstandrewserep |
language |
English |
topic |
GE Environmental Sciences GC Oceanography NDAS GE GC |
spellingShingle |
GE Environmental Sciences GC Oceanography NDAS GE GC 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 H. Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula |
topic_facet |
GE Environmental Sciences GC Oceanography NDAS GE GC |
description |
This study was part of the project “Population shift and ecosystem response – krill vs. salps” funded by the Lower Saxony Ministry of Science and Culture (MWK) lead by B.M. M.H.I., C.M.F., C.K. and S.S. were supported by the HGF Young Investigator Group SeaPump “Seasonal and regional food web interactions with the biological pump”, VH-NG-1000. CMF was additionally supported by the AWI Strategy Fund project EcoPump. MHI was additionally supported by the DFG Research Center of Excellence “The Ocean Floor – Earth’s Uncharted Interface”: EX-2077-390741603. 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. Publisher PDF Peer reviewed |
author2 |
University of St Andrews. Pelagic Ecology Research Group University of St Andrews. School of Biology University of St Andrews. Scottish Oceans Institute University of St Andrews. Centre for Research into Ecological & Environmental Modelling University of St Andrews. Marine Alliance for Science & Technology Scotland |
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 H. |
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 H. |
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 |
publishDate |
2021 |
url |
http://hdl.handle.net/10023/24524 https://doi.org/10.1038/s41467-021-27436-9 |
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_relation |
Nature Communications Pauli , N-C , Flintrop , C M , Konrad , C , Pakhomov , E A , Swoboda , S , Koch , F , Wang , X-L , Zhang , J-C , Brierley , A S , Bernasconi , M , Meyer , B & Iversen , M H 2021 , ' Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula ' , Nature Communications , vol. 12 , 7168 . https://doi.org/10.1038/s41467-021-27436-9 2041-1723 PURE: 277041074 PURE UUID: 670dd1b2-8aed-4fce-9f64-a242745a70f0 Jisc: 7b6e0c60e19047f884dfbbd2bf2c57a9 publisher-id: s41467-021-27436-9 manuscript: 27436 ORCID: /0000-0002-6438-6892/work/104618884 Scopus: 85120936756 WOS: 000728562700029 http://hdl.handle.net/10023/24524 https://doi.org/10.1038/s41467-021-27436-9 |
op_rights |
Copyright © The Author(s) 2021. 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. |
op_doi |
https://doi.org/10.1038/s41467-021-27436-9 |
container_title |
Nature Communications |
container_volume |
12 |
container_issue |
1 |
_version_ |
1770273048868421632 |
spelling |
ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/24524 2023-07-02T03:29:52+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 H. University of St Andrews. Pelagic Ecology Research Group University of St Andrews. School of Biology University of St Andrews. Scottish Oceans Institute University of St Andrews. Centre for Research into Ecological & Environmental Modelling University of St Andrews. Marine Alliance for Science & Technology Scotland 2021-12-16T11:30:07Z 12 application/pdf http://hdl.handle.net/10023/24524 https://doi.org/10.1038/s41467-021-27436-9 eng eng Nature Communications Pauli , N-C , Flintrop , C M , Konrad , C , Pakhomov , E A , Swoboda , S , Koch , F , Wang , X-L , Zhang , J-C , Brierley , A S , Bernasconi , M , Meyer , B & Iversen , M H 2021 , ' Krill and salp faecal pellets contribute equally to the carbon flux at the Antarctic Peninsula ' , Nature Communications , vol. 12 , 7168 . https://doi.org/10.1038/s41467-021-27436-9 2041-1723 PURE: 277041074 PURE UUID: 670dd1b2-8aed-4fce-9f64-a242745a70f0 Jisc: 7b6e0c60e19047f884dfbbd2bf2c57a9 publisher-id: s41467-021-27436-9 manuscript: 27436 ORCID: /0000-0002-6438-6892/work/104618884 Scopus: 85120936756 WOS: 000728562700029 http://hdl.handle.net/10023/24524 https://doi.org/10.1038/s41467-021-27436-9 Copyright © The Author(s) 2021. 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. GE Environmental Sciences GC Oceanography NDAS GE GC Journal article 2021 ftstandrewserep https://doi.org/10.1038/s41467-021-27436-9 2023-06-13T18:31:04Z This study was part of the project “Population shift and ecosystem response – krill vs. salps” funded by the Lower Saxony Ministry of Science and Culture (MWK) lead by B.M. M.H.I., C.M.F., C.K. and S.S. were supported by the HGF Young Investigator Group SeaPump “Seasonal and regional food web interactions with the biological pump”, VH-NG-1000. CMF was additionally supported by the AWI Strategy Fund project EcoPump. MHI was additionally supported by the DFG Research Center of Excellence “The Ocean Floor – Earth’s Uncharted Interface”: EX-2077-390741603. 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. Publisher PDF Peer reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Southern Ocean University of St Andrews: Digital Research Repository Antarctic Antarctic Peninsula Southern Ocean The Antarctic Nature Communications 12 1 |