Grazing by nano- and microzooplankton on heterotrophic picoplankton dominates the biological carbon cycling around the Western Antarctic Peninsula
Over the past 40 years, the significance of microzooplankton grazing in oceanic carbon cycling has been highlighted with the help of dilution experiments. The ecologically relevant Western Antarctic Peninsula (WAP) ecosystem in the Southern Ocean (SO), however, has not been well studied. Here we pre...
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Springer Nature
2024
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Online Access: | https://epic.awi.de/id/eprint/58550/ https://epic.awi.de/id/eprint/58550/1/s00300-024-03231-2.pdf https://doi.org/10.1007/s00300-024-03231-2 https://hdl.handle.net/10013/epic.5711c551-cd24-47cb-a2e4-2a1ca92ee070 |
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ftawi:oai:epic.awi.de:58550 2024-04-28T08:02:57+00:00 Grazing by nano- and microzooplankton on heterotrophic picoplankton dominates the biological carbon cycling around the Western Antarctic Peninsula Böckmann, Sebastian Trimborn, Scarlett Schubert, Hendrik Koch, Florian 2024-03 application/pdf https://epic.awi.de/id/eprint/58550/ https://epic.awi.de/id/eprint/58550/1/s00300-024-03231-2.pdf https://doi.org/10.1007/s00300-024-03231-2 https://hdl.handle.net/10013/epic.5711c551-cd24-47cb-a2e4-2a1ca92ee070 unknown Springer Nature https://epic.awi.de/id/eprint/58550/1/s00300-024-03231-2.pdf Böckmann, S. , Trimborn, S. orcid:0000-0003-1434-9927 , Schubert, H. and Koch, F. (2024) Grazing by nano- and microzooplankton on heterotrophic picoplankton dominates the biological carbon cycling around the Western Antarctic Peninsula , Polar Biology, 47 (3), pp. 279-294 . doi:10.1007/s00300-024-03231-2 <https://doi.org/10.1007/s00300-024-03231-2> , hdl:10013/epic.5711c551-cd24-47cb-a2e4-2a1ca92ee070 EPIC3Polar Biology, Springer Nature, 47(3), pp. 279-294, ISSN: 0722-4060 Article isiRev 2024 ftawi https://doi.org/10.1007/s00300-024-03231-2 2024-04-09T23:46:01Z Over the past 40 years, the significance of microzooplankton grazing in oceanic carbon cycling has been highlighted with the help of dilution experiments. The ecologically relevant Western Antarctic Peninsula (WAP) ecosystem in the Southern Ocean (SO), however, has not been well studied. Here we present data from dilution experiments, performed at three stations around the northern tip of the WAP to determine grazing rates of small zooplankton (hetero- and mixotrophic members of the 0.2–200 µm size fraction, SZP) on auto- and heterotrophic members of the < 200 µm plankton community as well as their gross growth. While variable impacts of SZP grazing on carbon cycling were measured, particulate organic carbon, not the traditionally used parameter chlorophyll a, provided the best interpretable results. Our results suggested that heterotrophic picoplankton played a significant role in the carbon turnover at all stations. Finally, a comparison of two stations with diverging characteristics highlights that SZP grazing eliminated 56–119% of gross particulate organic carbon production from the particulate fraction. Thus, SZP grazing eliminated 20–50 times more carbon from the particulate fraction compared to what was exported to depth, therefore significantly affecting the efficiency of the biological carbon pump at these SO sites. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Polar Biology Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Polar Biology 47 3 279 294 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Over the past 40 years, the significance of microzooplankton grazing in oceanic carbon cycling has been highlighted with the help of dilution experiments. The ecologically relevant Western Antarctic Peninsula (WAP) ecosystem in the Southern Ocean (SO), however, has not been well studied. Here we present data from dilution experiments, performed at three stations around the northern tip of the WAP to determine grazing rates of small zooplankton (hetero- and mixotrophic members of the 0.2–200 µm size fraction, SZP) on auto- and heterotrophic members of the < 200 µm plankton community as well as their gross growth. While variable impacts of SZP grazing on carbon cycling were measured, particulate organic carbon, not the traditionally used parameter chlorophyll a, provided the best interpretable results. Our results suggested that heterotrophic picoplankton played a significant role in the carbon turnover at all stations. Finally, a comparison of two stations with diverging characteristics highlights that SZP grazing eliminated 56–119% of gross particulate organic carbon production from the particulate fraction. Thus, SZP grazing eliminated 20–50 times more carbon from the particulate fraction compared to what was exported to depth, therefore significantly affecting the efficiency of the biological carbon pump at these SO sites. |
format |
Article in Journal/Newspaper |
author |
Böckmann, Sebastian Trimborn, Scarlett Schubert, Hendrik Koch, Florian |
spellingShingle |
Böckmann, Sebastian Trimborn, Scarlett Schubert, Hendrik Koch, Florian Grazing by nano- and microzooplankton on heterotrophic picoplankton dominates the biological carbon cycling around the Western Antarctic Peninsula |
author_facet |
Böckmann, Sebastian Trimborn, Scarlett Schubert, Hendrik Koch, Florian |
author_sort |
Böckmann, Sebastian |
title |
Grazing by nano- and microzooplankton on heterotrophic picoplankton dominates the biological carbon cycling around the Western Antarctic Peninsula |
title_short |
Grazing by nano- and microzooplankton on heterotrophic picoplankton dominates the biological carbon cycling around the Western Antarctic Peninsula |
title_full |
Grazing by nano- and microzooplankton on heterotrophic picoplankton dominates the biological carbon cycling around the Western Antarctic Peninsula |
title_fullStr |
Grazing by nano- and microzooplankton on heterotrophic picoplankton dominates the biological carbon cycling around the Western Antarctic Peninsula |
title_full_unstemmed |
Grazing by nano- and microzooplankton on heterotrophic picoplankton dominates the biological carbon cycling around the Western Antarctic Peninsula |
title_sort |
grazing by nano- and microzooplankton on heterotrophic picoplankton dominates the biological carbon cycling around the western antarctic peninsula |
publisher |
Springer Nature |
publishDate |
2024 |
url |
https://epic.awi.de/id/eprint/58550/ https://epic.awi.de/id/eprint/58550/1/s00300-024-03231-2.pdf https://doi.org/10.1007/s00300-024-03231-2 https://hdl.handle.net/10013/epic.5711c551-cd24-47cb-a2e4-2a1ca92ee070 |
genre |
Antarc* Antarctic Antarctic Peninsula Polar Biology Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Polar Biology Southern Ocean |
op_source |
EPIC3Polar Biology, Springer Nature, 47(3), pp. 279-294, ISSN: 0722-4060 |
op_relation |
https://epic.awi.de/id/eprint/58550/1/s00300-024-03231-2.pdf Böckmann, S. , Trimborn, S. orcid:0000-0003-1434-9927 , Schubert, H. and Koch, F. (2024) Grazing by nano- and microzooplankton on heterotrophic picoplankton dominates the biological carbon cycling around the Western Antarctic Peninsula , Polar Biology, 47 (3), pp. 279-294 . doi:10.1007/s00300-024-03231-2 <https://doi.org/10.1007/s00300-024-03231-2> , hdl:10013/epic.5711c551-cd24-47cb-a2e4-2a1ca92ee070 |
op_doi |
https://doi.org/10.1007/s00300-024-03231-2 |
container_title |
Polar Biology |
container_volume |
47 |
container_issue |
3 |
container_start_page |
279 |
op_container_end_page |
294 |
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1797574196798160896 |