Antarctic Seabed Assemblages in an Ice-Shelf-Adjacent Polynya, Western Weddell Sea
One-third of the Antarctic continental shelf is covered by ice shelves, floating extensions of the Antarctic Ice Sheet. Marine life beneath and bordering ice shelves is rarely investigated, yet likely to be highly impacted by climate change. As ice shelves retreat, marine environments transition int...
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ftunivcam:oai:www.repository.cam.ac.uk:1810/344761 2024-01-14T10:02:15+01:00 Antarctic Seabed Assemblages in an Ice-Shelf-Adjacent Polynya, Western Weddell Sea Frinault, AV Christie, FDW Fawcett, SE Flynn, RF Hutchinson, KA Montres Strevens, CMJ Taylor, ML Woodall, LC Barnes, DKA 2022-12-23T09:51:52Z application/pdf https://www.repository.cam.ac.uk/handle/1810/344761 https://doi.org/10.17863/CAM.92184 eng eng MDPI Scott Polar Research Institute Biology https://www.repository.cam.ac.uk/handle/1810/344761 doi:10.17863/CAM.92184 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Antarctica benthic assemblages biodiversity climate change coastal polynya continental shelf ice shelf Larsen Ice Shelf Southern Ocean Weddell Sea Article 2022 ftunivcam https://doi.org/10.17863/CAM.92184 2023-12-21T23:21:13Z One-third of the Antarctic continental shelf is covered by ice shelves, floating extensions of the Antarctic Ice Sheet. Marine life beneath and bordering ice shelves is rarely investigated, yet likely to be highly impacted by climate change. As ice shelves retreat, marine environments transition into new open-water spaces, with potential for primary production and consequent foodfall to the seafloor. How Antarctic seabed assemblages (benthos) develop in such emerging spaces is influenced by neighboring and oceanographically-connected communities; thus, closing knowledgegaps of benthic biodiversity near ice shelves underpins understanding of future ecosystem change. This study examined seafloor assemblages, and environmental differences, in a region that has experienced ice-shelf retreat, in a polynya adjacent to a marine margin at the forefront of climate change: the ice-shelf front. The study area, located in the Weddell Sea, is seldom accessible, and lies within a proposed international marine protected area. The study found a physically- and biologically-diverse seabed, complexity in potential environmental influences, and evidence of increasing megafaunal densities with increasing distance from an ice-shelf front. This research provides insights into seafloor habitats and inhabitants close to an evolving marine margin, and establishes ecological baselines from which biological responses to climate change can be evaluated to inform marine management. Flotilla Foundation and Marine Archaeology Consultants Switzerland; Prince Albert II of Monaco Foundation; University of Cape Town Future Leaders Programme; the South African National Research Foundation, University of Cape Town Science Faculty Fellowship, Vice-Chancellor Doctoral Research scholarships and Postgraduate Merit award; the Nekton Foundation. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ice Shelves Larsen Ice Shelf Southern Ocean Weddell Sea Apollo - University of Cambridge Repository Antarctic Larsen Ice Shelf ENVELOPE(-62.500,-62.500,-67.500,-67.500) Southern Ocean The Antarctic Weddell Weddell Sea |
institution |
Open Polar |
collection |
Apollo - University of Cambridge Repository |
op_collection_id |
ftunivcam |
language |
English |
topic |
Antarctica benthic assemblages biodiversity climate change coastal polynya continental shelf ice shelf Larsen Ice Shelf Southern Ocean Weddell Sea |
spellingShingle |
Antarctica benthic assemblages biodiversity climate change coastal polynya continental shelf ice shelf Larsen Ice Shelf Southern Ocean Weddell Sea Frinault, AV Christie, FDW Fawcett, SE Flynn, RF Hutchinson, KA Montres Strevens, CMJ Taylor, ML Woodall, LC Barnes, DKA Antarctic Seabed Assemblages in an Ice-Shelf-Adjacent Polynya, Western Weddell Sea |
topic_facet |
Antarctica benthic assemblages biodiversity climate change coastal polynya continental shelf ice shelf Larsen Ice Shelf Southern Ocean Weddell Sea |
description |
One-third of the Antarctic continental shelf is covered by ice shelves, floating extensions of the Antarctic Ice Sheet. Marine life beneath and bordering ice shelves is rarely investigated, yet likely to be highly impacted by climate change. As ice shelves retreat, marine environments transition into new open-water spaces, with potential for primary production and consequent foodfall to the seafloor. How Antarctic seabed assemblages (benthos) develop in such emerging spaces is influenced by neighboring and oceanographically-connected communities; thus, closing knowledgegaps of benthic biodiversity near ice shelves underpins understanding of future ecosystem change. This study examined seafloor assemblages, and environmental differences, in a region that has experienced ice-shelf retreat, in a polynya adjacent to a marine margin at the forefront of climate change: the ice-shelf front. The study area, located in the Weddell Sea, is seldom accessible, and lies within a proposed international marine protected area. The study found a physically- and biologically-diverse seabed, complexity in potential environmental influences, and evidence of increasing megafaunal densities with increasing distance from an ice-shelf front. This research provides insights into seafloor habitats and inhabitants close to an evolving marine margin, and establishes ecological baselines from which biological responses to climate change can be evaluated to inform marine management. Flotilla Foundation and Marine Archaeology Consultants Switzerland; Prince Albert II of Monaco Foundation; University of Cape Town Future Leaders Programme; the South African National Research Foundation, University of Cape Town Science Faculty Fellowship, Vice-Chancellor Doctoral Research scholarships and Postgraduate Merit award; the Nekton Foundation. |
format |
Article in Journal/Newspaper |
author |
Frinault, AV Christie, FDW Fawcett, SE Flynn, RF Hutchinson, KA Montres Strevens, CMJ Taylor, ML Woodall, LC Barnes, DKA |
author_facet |
Frinault, AV Christie, FDW Fawcett, SE Flynn, RF Hutchinson, KA Montres Strevens, CMJ Taylor, ML Woodall, LC Barnes, DKA |
author_sort |
Frinault, AV |
title |
Antarctic Seabed Assemblages in an Ice-Shelf-Adjacent Polynya, Western Weddell Sea |
title_short |
Antarctic Seabed Assemblages in an Ice-Shelf-Adjacent Polynya, Western Weddell Sea |
title_full |
Antarctic Seabed Assemblages in an Ice-Shelf-Adjacent Polynya, Western Weddell Sea |
title_fullStr |
Antarctic Seabed Assemblages in an Ice-Shelf-Adjacent Polynya, Western Weddell Sea |
title_full_unstemmed |
Antarctic Seabed Assemblages in an Ice-Shelf-Adjacent Polynya, Western Weddell Sea |
title_sort |
antarctic seabed assemblages in an ice-shelf-adjacent polynya, western weddell sea |
publisher |
MDPI |
publishDate |
2022 |
url |
https://www.repository.cam.ac.uk/handle/1810/344761 https://doi.org/10.17863/CAM.92184 |
long_lat |
ENVELOPE(-62.500,-62.500,-67.500,-67.500) |
geographic |
Antarctic Larsen Ice Shelf Southern Ocean The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Larsen Ice Shelf Southern Ocean The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ice Shelves Larsen Ice Shelf Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ice Shelves Larsen Ice Shelf Southern Ocean Weddell Sea |
op_relation |
https://www.repository.cam.ac.uk/handle/1810/344761 doi:10.17863/CAM.92184 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.17863/CAM.92184 |
_version_ |
1788057179745419264 |