Mesozooplankton trait distribution in relation to environmental conditions and the presence of krill and salps along the northern Antarctic Peninsula
Abstract Zooplankton community structure is often characterized by using traits as a function of environmental conditions. However, trait-based knowledge on Southern Ocean mesozooplankton is limited, particularly regarding size and elemental composition. Nine stations around the northern Antarctic P...
Published in: | Journal of Plankton Research |
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Oxford University Press (OUP)
2021
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Online Access: | http://dx.doi.org/10.1093/plankt/fbab068 https://academic.oup.com/plankt/article-pdf/43/6/927/41211813/fbab068.pdf |
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croxfordunivpr:10.1093/plankt/fbab068 2024-06-09T07:39:24+00:00 Mesozooplankton trait distribution in relation to environmental conditions and the presence of krill and salps along the northern Antarctic Peninsula Plum, Christoph Cornils, Astrid Driscoll, Ryan Wenta, Philipp Badewien, Thomas H Niggemann, Jutta Moorthi, Stefanie Koski, Marja Ministry for Science and Culture of Lower Saxony 2021 http://dx.doi.org/10.1093/plankt/fbab068 https://academic.oup.com/plankt/article-pdf/43/6/927/41211813/fbab068.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Journal of Plankton Research volume 43, issue 6, page 927-944 ISSN 0142-7873 1464-3774 journal-article 2021 croxfordunivpr https://doi.org/10.1093/plankt/fbab068 2024-05-10T13:15:15Z Abstract Zooplankton community structure is often characterized by using traits as a function of environmental conditions. However, trait-based knowledge on Southern Ocean mesozooplankton is limited, particularly regarding size and elemental composition. Nine stations around the northern Antarctic Peninsula were sampled during austral autumn to investigate the spatial variability in mesozooplankton taxonomic composition, size structure and stoichiometry in relation to environmental predictors, but also to the abundance of Antarctic krill and salps. The mesozooplankton communities around the South Shetland Islands were dominated by small copepods, mainly Oithonidae and Oncaeidae, while stations along the frontal zones and the Weddell Sea revealed a higher proportion of larger organisms. Spatial differences in taxonomic composition and size structure were significantly altered by salp abundance, with stronger impact on small-sized copepods. Furthermore, taxonomic composition was significantly related to temperature and total carbon but not chlorophyll a, indicating reduced relevance of phytoplankton derived food during autumn. Bulk mesozooplankton stoichiometry, however, showed no significant relation to environmental conditions, mesozooplankton size structure or dominant taxa. Our results indicate that aside from bottom-up related drivers, top-down effects of salps may lead to mesozooplankton communities that are more dominated by larger size classes with potential consequences for trophic interactions and nutrient fluxes. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Peninsula South Shetland Islands Southern Ocean Weddell Sea Copepods Oxford University Press Antarctic Antarctic Peninsula Austral South Shetland Islands Southern Ocean Weddell Weddell Sea Journal of Plankton Research |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Zooplankton community structure is often characterized by using traits as a function of environmental conditions. However, trait-based knowledge on Southern Ocean mesozooplankton is limited, particularly regarding size and elemental composition. Nine stations around the northern Antarctic Peninsula were sampled during austral autumn to investigate the spatial variability in mesozooplankton taxonomic composition, size structure and stoichiometry in relation to environmental predictors, but also to the abundance of Antarctic krill and salps. The mesozooplankton communities around the South Shetland Islands were dominated by small copepods, mainly Oithonidae and Oncaeidae, while stations along the frontal zones and the Weddell Sea revealed a higher proportion of larger organisms. Spatial differences in taxonomic composition and size structure were significantly altered by salp abundance, with stronger impact on small-sized copepods. Furthermore, taxonomic composition was significantly related to temperature and total carbon but not chlorophyll a, indicating reduced relevance of phytoplankton derived food during autumn. Bulk mesozooplankton stoichiometry, however, showed no significant relation to environmental conditions, mesozooplankton size structure or dominant taxa. Our results indicate that aside from bottom-up related drivers, top-down effects of salps may lead to mesozooplankton communities that are more dominated by larger size classes with potential consequences for trophic interactions and nutrient fluxes. |
author2 |
Koski, Marja Ministry for Science and Culture of Lower Saxony |
format |
Article in Journal/Newspaper |
author |
Plum, Christoph Cornils, Astrid Driscoll, Ryan Wenta, Philipp Badewien, Thomas H Niggemann, Jutta Moorthi, Stefanie |
spellingShingle |
Plum, Christoph Cornils, Astrid Driscoll, Ryan Wenta, Philipp Badewien, Thomas H Niggemann, Jutta Moorthi, Stefanie Mesozooplankton trait distribution in relation to environmental conditions and the presence of krill and salps along the northern Antarctic Peninsula |
author_facet |
Plum, Christoph Cornils, Astrid Driscoll, Ryan Wenta, Philipp Badewien, Thomas H Niggemann, Jutta Moorthi, Stefanie |
author_sort |
Plum, Christoph |
title |
Mesozooplankton trait distribution in relation to environmental conditions and the presence of krill and salps along the northern Antarctic Peninsula |
title_short |
Mesozooplankton trait distribution in relation to environmental conditions and the presence of krill and salps along the northern Antarctic Peninsula |
title_full |
Mesozooplankton trait distribution in relation to environmental conditions and the presence of krill and salps along the northern Antarctic Peninsula |
title_fullStr |
Mesozooplankton trait distribution in relation to environmental conditions and the presence of krill and salps along the northern Antarctic Peninsula |
title_full_unstemmed |
Mesozooplankton trait distribution in relation to environmental conditions and the presence of krill and salps along the northern Antarctic Peninsula |
title_sort |
mesozooplankton trait distribution in relation to environmental conditions and the presence of krill and salps along the northern antarctic peninsula |
publisher |
Oxford University Press (OUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1093/plankt/fbab068 https://academic.oup.com/plankt/article-pdf/43/6/927/41211813/fbab068.pdf |
geographic |
Antarctic Antarctic Peninsula Austral South Shetland Islands Southern Ocean Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula Austral South Shetland Islands Southern Ocean Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula South Shetland Islands Southern Ocean Weddell Sea Copepods |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula South Shetland Islands Southern Ocean Weddell Sea Copepods |
op_source |
Journal of Plankton Research volume 43, issue 6, page 927-944 ISSN 0142-7873 1464-3774 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/plankt/fbab068 |
container_title |
Journal of Plankton Research |
_version_ |
1801379262742134784 |