Community structure of under-ice fauna in relation to winter sea-ice habitat properties from the Weddell Sea
Climate change-related alterations of Antarctic sea-ice habitats will significantly impact the interaction of ice-associated organisms with the environment, with repercussions on ecosystem functioning. The nature of this interaction is poorly understood, particularly during the critical period of wi...
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ftunivwagenin:oai:library.wur.nl:wurpubs/504230 2024-02-04T09:55:53+01:00 Community structure of under-ice fauna in relation to winter sea-ice habitat properties from the Weddell Sea David, Carmen Schaafsma, F.L. van Franeker, J.A. Lange, Benjamin Brandt, A. Flores, H. 2017 application/pdf https://research.wur.nl/en/publications/community-structure-of-under-ice-fauna-in-relation-to-winter-sea- https://doi.org/10.1007/s00300-016-1948-4 en eng https://edepot.wur.nl/383265 https://research.wur.nl/en/publications/community-structure-of-under-ice-fauna-in-relation-to-winter-sea- doi:10.1007/s00300-016-1948-4 info:eu-repo/semantics/restrictedAccess Wageningen University & Research Polar Biology 40 (2017) 2 ISSN: 0722-4060 Antarctic krill Biomass Ctenocalanus Diversity Sea ice Southern Ocean Stephos longipes Zooplankton euphausia-superba info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2017 ftunivwagenin https://doi.org/10.1007/s00300-016-1948-4 2024-01-10T23:17:47Z Climate change-related alterations of Antarctic sea-ice habitats will significantly impact the interaction of ice-associated organisms with the environment, with repercussions on ecosystem functioning. The nature of this interaction is poorly understood, particularly during the critical period of winter–spring transition. To investigate the role of sea-ice and underlying water-column properties in structuring under-ice communities during late winter/early spring, we used a Surface and Under Ice Trawl to sample animals and environmental properties in the upper 2-m layer under the sea ice in the northern Weddell Sea from August to October 2013. The area of investigation was largely homogeneous in terms of hydrography and sea-ice coverage. We hypothesised that this apparent homogeneity in the physical regime was mirrored in the structure of the under-ice community. The under-ice community was numerically dominated by the copepods Stephos longipes, Ctenocalanus spp. and Calanus propinquus (altogether 67 %), and furcilia larvae of Antarctic krill Euphausia superba (30 %). In spite of the apparent homogeneity of the environment, abundance and biomass distributions at our sampling stations indicated the presence of three community types, following a geographical gradient in the investigation area: (1) high biomass, krill-dominated in the west, (2) high abundance, copepod-dominated in the east, and (3) low abundance, low biomass at the ice edge. Combined analysis with environmental data indicated that under-ice community structure was correlated with sea-ice coverage, chlorophyll a concentration, and bottom depth. The heterogeneity of the Antarctic under-ice community was probably also driven by other factors, such as advection, sea-ice drift, and seasonal progression. The response of under-ice communities to changing sea-ice habitats may thus considerably vary seasonally and regionally Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Polar Biology Sea ice Southern Ocean Weddell Sea Copepods Wageningen UR (University & Research Centre): Digital Library Antarctic Southern Ocean The Antarctic Weddell Sea Weddell Polar Biology 40 2 247 261 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
Antarctic krill Biomass Ctenocalanus Diversity Sea ice Southern Ocean Stephos longipes Zooplankton euphausia-superba |
spellingShingle |
Antarctic krill Biomass Ctenocalanus Diversity Sea ice Southern Ocean Stephos longipes Zooplankton euphausia-superba David, Carmen Schaafsma, F.L. van Franeker, J.A. Lange, Benjamin Brandt, A. Flores, H. Community structure of under-ice fauna in relation to winter sea-ice habitat properties from the Weddell Sea |
topic_facet |
Antarctic krill Biomass Ctenocalanus Diversity Sea ice Southern Ocean Stephos longipes Zooplankton euphausia-superba |
description |
Climate change-related alterations of Antarctic sea-ice habitats will significantly impact the interaction of ice-associated organisms with the environment, with repercussions on ecosystem functioning. The nature of this interaction is poorly understood, particularly during the critical period of winter–spring transition. To investigate the role of sea-ice and underlying water-column properties in structuring under-ice communities during late winter/early spring, we used a Surface and Under Ice Trawl to sample animals and environmental properties in the upper 2-m layer under the sea ice in the northern Weddell Sea from August to October 2013. The area of investigation was largely homogeneous in terms of hydrography and sea-ice coverage. We hypothesised that this apparent homogeneity in the physical regime was mirrored in the structure of the under-ice community. The under-ice community was numerically dominated by the copepods Stephos longipes, Ctenocalanus spp. and Calanus propinquus (altogether 67 %), and furcilia larvae of Antarctic krill Euphausia superba (30 %). In spite of the apparent homogeneity of the environment, abundance and biomass distributions at our sampling stations indicated the presence of three community types, following a geographical gradient in the investigation area: (1) high biomass, krill-dominated in the west, (2) high abundance, copepod-dominated in the east, and (3) low abundance, low biomass at the ice edge. Combined analysis with environmental data indicated that under-ice community structure was correlated with sea-ice coverage, chlorophyll a concentration, and bottom depth. The heterogeneity of the Antarctic under-ice community was probably also driven by other factors, such as advection, sea-ice drift, and seasonal progression. The response of under-ice communities to changing sea-ice habitats may thus considerably vary seasonally and regionally |
format |
Article in Journal/Newspaper |
author |
David, Carmen Schaafsma, F.L. van Franeker, J.A. Lange, Benjamin Brandt, A. Flores, H. |
author_facet |
David, Carmen Schaafsma, F.L. van Franeker, J.A. Lange, Benjamin Brandt, A. Flores, H. |
author_sort |
David, Carmen |
title |
Community structure of under-ice fauna in relation to winter sea-ice habitat properties from the Weddell Sea |
title_short |
Community structure of under-ice fauna in relation to winter sea-ice habitat properties from the Weddell Sea |
title_full |
Community structure of under-ice fauna in relation to winter sea-ice habitat properties from the Weddell Sea |
title_fullStr |
Community structure of under-ice fauna in relation to winter sea-ice habitat properties from the Weddell Sea |
title_full_unstemmed |
Community structure of under-ice fauna in relation to winter sea-ice habitat properties from the Weddell Sea |
title_sort |
community structure of under-ice fauna in relation to winter sea-ice habitat properties from the weddell sea |
publishDate |
2017 |
url |
https://research.wur.nl/en/publications/community-structure-of-under-ice-fauna-in-relation-to-winter-sea- https://doi.org/10.1007/s00300-016-1948-4 |
geographic |
Antarctic Southern Ocean The Antarctic Weddell Sea Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell Sea Weddell |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Polar Biology Sea ice Southern Ocean Weddell Sea Copepods |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Polar Biology Sea ice Southern Ocean Weddell Sea Copepods |
op_source |
Polar Biology 40 (2017) 2 ISSN: 0722-4060 |
op_relation |
https://edepot.wur.nl/383265 https://research.wur.nl/en/publications/community-structure-of-under-ice-fauna-in-relation-to-winter-sea- doi:10.1007/s00300-016-1948-4 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.1007/s00300-016-1948-4 |
container_title |
Polar Biology |
container_volume |
40 |
container_issue |
2 |
container_start_page |
247 |
op_container_end_page |
261 |
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1789960080510156800 |