Community structure of under-ice fauna in the Eurasian central Arctic Ocean in relation to environmental properties of sea-ice habitats
Arctic sea-ice decline is expected to have a significant impact on Arctic marine ecosystems. Ice-associated fauna play a key role in this context because they constitute a unique part of Arctic biodiversity and transmit carbon from sea-ice algae into pelagic and benthic food webs. Our study presents...
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ftawi:oai:epic.awi.de:37458 2024-09-15T17:38:50+00:00 Community structure of under-ice fauna in the Eurasian central Arctic Ocean in relation to environmental properties of sea-ice habitats David, Carmen Lange, Benjamin Rabe, Benjamin Flores, Hauke 2015-03-02 https://epic.awi.de/id/eprint/37458/ https://hdl.handle.net/10013/epic.45097 unknown INTER-RESEARCH David, C. , Lange, B. , Rabe, B. orcid:0000-0001-5794-9856 and Flores, H. orcid:0000-0003-1617-5449 (2015) Community structure of under-ice fauna in the Eurasian central Arctic Ocean in relation to environmental properties of sea-ice habitats , Marine Ecology-Progress Series, 522 , pp. 15-32 . doi:10.3354/meps11156 <https://doi.org/10.3354/meps11156> , hdl:10013/epic.45097 EPIC3Marine Ecology-Progress Series, INTER-RESEARCH, 522, pp. 15-32, ISSN: 0171-8630 Article peerRev 2015 ftawi https://doi.org/10.3354/meps11156 2024-06-24T04:11:05Z Arctic sea-ice decline is expected to have a significant impact on Arctic marine ecosystems. Ice-associated fauna play a key role in this context because they constitute a unique part of Arctic biodiversity and transmit carbon from sea-ice algae into pelagic and benthic food webs. Our study presents the first regional-scale record of under-ice faunal distribution and the environmental characteristics of under-ice habitats throughout the Eurasian Basin. Sampling was conducted with a Surface and Under-Ice Trawl, equipped with a sensor array recording ice thickness and other physical parameters during trawling. We identified 2 environmental regimes, broadly coherent with the Nansen and Amundsen Basins. The Nansen Basin regime was distinguished from the Amundsen Basin regime by heavier sea-ice conditions, higher surface salinities and higher nitrate + nitrite concentrations. We found a diverse (28 species) under-ice community throughout the Eurasian Basin. Change in community structure reflected differences in the relative contribution of abundant species. Copepods (Calanus hyperboreus and C. glacialis) dominated in the Nansen Basin regime. In the Amundsen Basin regime, amphipods (Apherusa glacialis, Themisto libellula) dominated. Polar cod Boreogadus saida was present throughout the sampling area. Abrupt changes from a dominance of ice-associated amphipods at ice-covered stations to a dominance of pelagic amphipods (T. libellula) at nearby ice-free stations emphasised the decisive influence of sea ice on small-scale patterns in the surface-layer community. The observed response in community composition to different environmental regimes indicates potential long-term alterations in Arctic marine ecosystems as the Arctic Ocean continues to change. Article in Journal/Newspaper amundsen basin Arctic Arctic biodiversity Arctic Ocean Boreogadus saida Calanus hyperboreus ice algae Nansen Basin polar cod Sea ice Themisto Themisto libellula Copepods Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Marine Ecology Progress Series 522 15 32 |
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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 |
Arctic sea-ice decline is expected to have a significant impact on Arctic marine ecosystems. Ice-associated fauna play a key role in this context because they constitute a unique part of Arctic biodiversity and transmit carbon from sea-ice algae into pelagic and benthic food webs. Our study presents the first regional-scale record of under-ice faunal distribution and the environmental characteristics of under-ice habitats throughout the Eurasian Basin. Sampling was conducted with a Surface and Under-Ice Trawl, equipped with a sensor array recording ice thickness and other physical parameters during trawling. We identified 2 environmental regimes, broadly coherent with the Nansen and Amundsen Basins. The Nansen Basin regime was distinguished from the Amundsen Basin regime by heavier sea-ice conditions, higher surface salinities and higher nitrate + nitrite concentrations. We found a diverse (28 species) under-ice community throughout the Eurasian Basin. Change in community structure reflected differences in the relative contribution of abundant species. Copepods (Calanus hyperboreus and C. glacialis) dominated in the Nansen Basin regime. In the Amundsen Basin regime, amphipods (Apherusa glacialis, Themisto libellula) dominated. Polar cod Boreogadus saida was present throughout the sampling area. Abrupt changes from a dominance of ice-associated amphipods at ice-covered stations to a dominance of pelagic amphipods (T. libellula) at nearby ice-free stations emphasised the decisive influence of sea ice on small-scale patterns in the surface-layer community. The observed response in community composition to different environmental regimes indicates potential long-term alterations in Arctic marine ecosystems as the Arctic Ocean continues to change. |
format |
Article in Journal/Newspaper |
author |
David, Carmen Lange, Benjamin Rabe, Benjamin Flores, Hauke |
spellingShingle |
David, Carmen Lange, Benjamin Rabe, Benjamin Flores, Hauke Community structure of under-ice fauna in the Eurasian central Arctic Ocean in relation to environmental properties of sea-ice habitats |
author_facet |
David, Carmen Lange, Benjamin Rabe, Benjamin Flores, Hauke |
author_sort |
David, Carmen |
title |
Community structure of under-ice fauna in the Eurasian central Arctic Ocean in relation to environmental properties of sea-ice habitats |
title_short |
Community structure of under-ice fauna in the Eurasian central Arctic Ocean in relation to environmental properties of sea-ice habitats |
title_full |
Community structure of under-ice fauna in the Eurasian central Arctic Ocean in relation to environmental properties of sea-ice habitats |
title_fullStr |
Community structure of under-ice fauna in the Eurasian central Arctic Ocean in relation to environmental properties of sea-ice habitats |
title_full_unstemmed |
Community structure of under-ice fauna in the Eurasian central Arctic Ocean in relation to environmental properties of sea-ice habitats |
title_sort |
community structure of under-ice fauna in the eurasian central arctic ocean in relation to environmental properties of sea-ice habitats |
publisher |
INTER-RESEARCH |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/37458/ https://hdl.handle.net/10013/epic.45097 |
genre |
amundsen basin Arctic Arctic biodiversity Arctic Ocean Boreogadus saida Calanus hyperboreus ice algae Nansen Basin polar cod Sea ice Themisto Themisto libellula Copepods |
genre_facet |
amundsen basin Arctic Arctic biodiversity Arctic Ocean Boreogadus saida Calanus hyperboreus ice algae Nansen Basin polar cod Sea ice Themisto Themisto libellula Copepods |
op_source |
EPIC3Marine Ecology-Progress Series, INTER-RESEARCH, 522, pp. 15-32, ISSN: 0171-8630 |
op_relation |
David, C. , Lange, B. , Rabe, B. orcid:0000-0001-5794-9856 and Flores, H. orcid:0000-0003-1617-5449 (2015) Community structure of under-ice fauna in the Eurasian central Arctic Ocean in relation to environmental properties of sea-ice habitats , Marine Ecology-Progress Series, 522 , pp. 15-32 . doi:10.3354/meps11156 <https://doi.org/10.3354/meps11156> , hdl:10013/epic.45097 |
op_doi |
https://doi.org/10.3354/meps11156 |
container_title |
Marine Ecology Progress Series |
container_volume |
522 |
container_start_page |
15 |
op_container_end_page |
32 |
_version_ |
1810475629973340160 |