Increased sea ice cover alters food web structure in East Antarctica
In recent years, sea ice cover along coasts of East Antarctica has tended to increase. To understand ecological implications of these environmental changes, we studied benthic food web structure on the coasts of Adelie Land during an event of unusually high sea ice cover (i.e. two successive austral...
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Language: | English |
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ftvliz:oai:oma.vliz.be:323162 2023-05-15T13:04:17+02:00 Increased sea ice cover alters food web structure in East Antarctica Michel, L.N. Danis, B. Dubois, P. Eleaume, M. Fournier, J. Gallut, C. Jane, P. Lepoint, G. 2019 application/pdf https://www.vliz.be/imisdocs/publications/343650.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000469418100008 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1038/s41598-019-44605-5 https://www.vliz.be/imisdocs/publications/343650.pdf info:eu-repo/semantics/openAccess %3Ci%3ENPG+Scientific+Reports+9%3C%2Fi%3E%3A+8062.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1038%2Fs41598-019-44605-5%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1038%2Fs41598-019-44605-5%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftvliz https://doi.org/10.1038/s41598-019-44605-5 2022-05-01T11:35:30Z In recent years, sea ice cover along coasts of East Antarctica has tended to increase. To understand ecological implications of these environmental changes, we studied benthic food web structure on the coasts of Adelie Land during an event of unusually high sea ice cover (i.e. two successive austral summers without seasonal breakup). We used integrative trophic markers (stable isotope ratios of carbon, nitrogen and sulfur) to build ecological models and explored feeding habits of macroinvertebrates. In total, 28 taxa spanning most present animal groups and functional guilds were investigated. Our results indicate that the absence of seasonal sea ice breakup deeply influenced benthic food webs. Sympagic algae dominated the diet of many key consumers, and the trophic levels of invertebrates were low, suggesting omnivore consumers did not rely much on predation and/or scavenging. Our results provide insights about how Antarctic benthic consumers, which typically live in an extremely stable environment, might adapt their feeding habits in response to sudden changes in environmental conditions and trophic resource availability. They also show that local and/or global trends of sea ice increase in Antarctica have the potential to cause drastic changes in food web structure, and therefore to impact benthic communities. Article in Journal/Newspaper Adelie Land Antarc* Antarctic Antarctica East Antarctica Sea ice Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Antarctic Austral East Antarctica Scientific Reports 9 1 |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
description |
In recent years, sea ice cover along coasts of East Antarctica has tended to increase. To understand ecological implications of these environmental changes, we studied benthic food web structure on the coasts of Adelie Land during an event of unusually high sea ice cover (i.e. two successive austral summers without seasonal breakup). We used integrative trophic markers (stable isotope ratios of carbon, nitrogen and sulfur) to build ecological models and explored feeding habits of macroinvertebrates. In total, 28 taxa spanning most present animal groups and functional guilds were investigated. Our results indicate that the absence of seasonal sea ice breakup deeply influenced benthic food webs. Sympagic algae dominated the diet of many key consumers, and the trophic levels of invertebrates were low, suggesting omnivore consumers did not rely much on predation and/or scavenging. Our results provide insights about how Antarctic benthic consumers, which typically live in an extremely stable environment, might adapt their feeding habits in response to sudden changes in environmental conditions and trophic resource availability. They also show that local and/or global trends of sea ice increase in Antarctica have the potential to cause drastic changes in food web structure, and therefore to impact benthic communities. |
format |
Article in Journal/Newspaper |
author |
Michel, L.N. Danis, B. Dubois, P. Eleaume, M. Fournier, J. Gallut, C. Jane, P. Lepoint, G. |
spellingShingle |
Michel, L.N. Danis, B. Dubois, P. Eleaume, M. Fournier, J. Gallut, C. Jane, P. Lepoint, G. Increased sea ice cover alters food web structure in East Antarctica |
author_facet |
Michel, L.N. Danis, B. Dubois, P. Eleaume, M. Fournier, J. Gallut, C. Jane, P. Lepoint, G. |
author_sort |
Michel, L.N. |
title |
Increased sea ice cover alters food web structure in East Antarctica |
title_short |
Increased sea ice cover alters food web structure in East Antarctica |
title_full |
Increased sea ice cover alters food web structure in East Antarctica |
title_fullStr |
Increased sea ice cover alters food web structure in East Antarctica |
title_full_unstemmed |
Increased sea ice cover alters food web structure in East Antarctica |
title_sort |
increased sea ice cover alters food web structure in east antarctica |
publishDate |
2019 |
url |
https://www.vliz.be/imisdocs/publications/343650.pdf |
geographic |
Antarctic Austral East Antarctica |
geographic_facet |
Antarctic Austral East Antarctica |
genre |
Adelie Land Antarc* Antarctic Antarctica East Antarctica Sea ice |
genre_facet |
Adelie Land Antarc* Antarctic Antarctica East Antarctica Sea ice |
op_source |
%3Ci%3ENPG+Scientific+Reports+9%3C%2Fi%3E%3A+8062.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1038%2Fs41598-019-44605-5%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1038%2Fs41598-019-44605-5%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000469418100008 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1038/s41598-019-44605-5 https://www.vliz.be/imisdocs/publications/343650.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-019-44605-5 |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
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1766356381960503296 |