Proportion of bryozoa, isopoda and ostracoda, and bryozoan species richness on the Antarctic continental shelf, slope and abyss
The Antarctic continental slope spans the depths from the shelf break (usually between 500 and 1000 m) to ~3000 m, is very steep, overlain by 'warm' (2-2.5 °C) Circumpolar Deep Water (CDW), and life there is poorly studied. This study investigates whether life on Antarctica's continen...
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.811775 https://doi.org/10.1594/PANGAEA.811775 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.811775 2023-05-15T13:42:11+02:00 Proportion of bryozoa, isopoda and ostracoda, and bryozoan species richness on the Antarctic continental shelf, slope and abyss Kaiser, Stefanie Griffiths, Huw James Barnes, David K A Brandão, Simone N Brandt, Angelika O'Brien, Philip E LATITUDE: -62.000000 * LONGITUDE: -51.000000 2011-05-17 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.811775 https://doi.org/10.1594/PANGAEA.811775 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.811775 https://doi.org/10.1594/PANGAEA.811775 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Kaiser, Stefanie; Griffiths, Huw James; Barnes, David K A; Brandão, Simone N; Brandt, Angelika; O'Brien, Philip E (2011): Is there a distinct continental slope fauna in the Antarctic? Deep Sea Research Part II: Topical Studies in Oceanography, 58(1-2), 91-104, https://doi.org/10.1016/j.dsr2.2010.05.017 Antarctica International Polar Year (2007-2008) IPY Scotia-Weddell Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.811775 https://doi.org/10.1016/j.dsr2.2010.05.017 2023-01-20T07:33:00Z The Antarctic continental slope spans the depths from the shelf break (usually between 500 and 1000 m) to ~3000 m, is very steep, overlain by 'warm' (2-2.5 °C) Circumpolar Deep Water (CDW), and life there is poorly studied. This study investigates whether life on Antarctica's continental slope is essentially an extension of the shelf or the abyssal fauna, a transition zone between these or clearly distinct in its own right. Using data from several cruises to the Weddell Sea and Scotia Sea, including the ANDEEP (ANtarctic benthic DEEP-sea biodiversity, colonisation history and recent community patterns) I-III, BIOPEARL (Biodiversity, Phylogeny, Evolution and Adaptive Radiation of Life in Antarctica) 1 and EASIZ (Ecology of the Antarctic Sea Ice Zone) II cruises as well as current databases (SOMBASE, SCAR-MarBIN), four different taxa were selected (i.e. cheilostome bryozoans, isopod and ostracod crustaceans and echinoid echinoderms) and two areas, the Weddell Sea and the Scotia Sea, to examine faunal composition, richness and affinities. The answer has important ramifications to the link between physical oceanography and ecology, and the potential of the slope to act as a refuge and resupply zone to the shelf during glaciations. Benthic samples were collected using Agassiz trawl, epibenthic sledge and Rauschert sled. By bathymetric definition, these data suggest that despite eurybathy in some of the groups examined and apparent similarity of physical conditions in the Antarctic, the shelf, slope and abyssal faunas were clearly separated in the Weddell Sea. However, no such separation of faunas was apparent in the Scotia Sea (except in echinoids). Using a geomorphological definition of the slope, shelf-slope-abyss similarity only changed significantly in the bryozoans. Our results did not support the presence of a homogenous and unique Antarctic slope fauna despite a high number of species being restricted to the slope. However, it remains the case that there may be a unique Antarctic slope fauna, but the paucity ... Dataset Antarc* Antarctic Antarctica International Polar Year IPY Scotia Sea Sea ice Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Scotia Sea The Antarctic Weddell Weddell Sea ENVELOPE(-51.000000,-51.000000,-62.000000,-62.000000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Antarctica International Polar Year (2007-2008) IPY Scotia-Weddell |
spellingShingle |
Antarctica International Polar Year (2007-2008) IPY Scotia-Weddell Kaiser, Stefanie Griffiths, Huw James Barnes, David K A Brandão, Simone N Brandt, Angelika O'Brien, Philip E Proportion of bryozoa, isopoda and ostracoda, and bryozoan species richness on the Antarctic continental shelf, slope and abyss |
topic_facet |
Antarctica International Polar Year (2007-2008) IPY Scotia-Weddell |
description |
The Antarctic continental slope spans the depths from the shelf break (usually between 500 and 1000 m) to ~3000 m, is very steep, overlain by 'warm' (2-2.5 °C) Circumpolar Deep Water (CDW), and life there is poorly studied. This study investigates whether life on Antarctica's continental slope is essentially an extension of the shelf or the abyssal fauna, a transition zone between these or clearly distinct in its own right. Using data from several cruises to the Weddell Sea and Scotia Sea, including the ANDEEP (ANtarctic benthic DEEP-sea biodiversity, colonisation history and recent community patterns) I-III, BIOPEARL (Biodiversity, Phylogeny, Evolution and Adaptive Radiation of Life in Antarctica) 1 and EASIZ (Ecology of the Antarctic Sea Ice Zone) II cruises as well as current databases (SOMBASE, SCAR-MarBIN), four different taxa were selected (i.e. cheilostome bryozoans, isopod and ostracod crustaceans and echinoid echinoderms) and two areas, the Weddell Sea and the Scotia Sea, to examine faunal composition, richness and affinities. The answer has important ramifications to the link between physical oceanography and ecology, and the potential of the slope to act as a refuge and resupply zone to the shelf during glaciations. Benthic samples were collected using Agassiz trawl, epibenthic sledge and Rauschert sled. By bathymetric definition, these data suggest that despite eurybathy in some of the groups examined and apparent similarity of physical conditions in the Antarctic, the shelf, slope and abyssal faunas were clearly separated in the Weddell Sea. However, no such separation of faunas was apparent in the Scotia Sea (except in echinoids). Using a geomorphological definition of the slope, shelf-slope-abyss similarity only changed significantly in the bryozoans. Our results did not support the presence of a homogenous and unique Antarctic slope fauna despite a high number of species being restricted to the slope. However, it remains the case that there may be a unique Antarctic slope fauna, but the paucity ... |
format |
Dataset |
author |
Kaiser, Stefanie Griffiths, Huw James Barnes, David K A Brandão, Simone N Brandt, Angelika O'Brien, Philip E |
author_facet |
Kaiser, Stefanie Griffiths, Huw James Barnes, David K A Brandão, Simone N Brandt, Angelika O'Brien, Philip E |
author_sort |
Kaiser, Stefanie |
title |
Proportion of bryozoa, isopoda and ostracoda, and bryozoan species richness on the Antarctic continental shelf, slope and abyss |
title_short |
Proportion of bryozoa, isopoda and ostracoda, and bryozoan species richness on the Antarctic continental shelf, slope and abyss |
title_full |
Proportion of bryozoa, isopoda and ostracoda, and bryozoan species richness on the Antarctic continental shelf, slope and abyss |
title_fullStr |
Proportion of bryozoa, isopoda and ostracoda, and bryozoan species richness on the Antarctic continental shelf, slope and abyss |
title_full_unstemmed |
Proportion of bryozoa, isopoda and ostracoda, and bryozoan species richness on the Antarctic continental shelf, slope and abyss |
title_sort |
proportion of bryozoa, isopoda and ostracoda, and bryozoan species richness on the antarctic continental shelf, slope and abyss |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.811775 https://doi.org/10.1594/PANGAEA.811775 |
op_coverage |
LATITUDE: -62.000000 * LONGITUDE: -51.000000 |
long_lat |
ENVELOPE(-51.000000,-51.000000,-62.000000,-62.000000) |
geographic |
Antarctic Scotia Sea The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Scotia Sea The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctica International Polar Year IPY Scotia Sea Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica International Polar Year IPY Scotia Sea Sea ice Weddell Sea |
op_source |
Supplement to: Kaiser, Stefanie; Griffiths, Huw James; Barnes, David K A; Brandão, Simone N; Brandt, Angelika; O'Brien, Philip E (2011): Is there a distinct continental slope fauna in the Antarctic? Deep Sea Research Part II: Topical Studies in Oceanography, 58(1-2), 91-104, https://doi.org/10.1016/j.dsr2.2010.05.017 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.811775 https://doi.org/10.1594/PANGAEA.811775 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.811775 https://doi.org/10.1016/j.dsr2.2010.05.017 |
_version_ |
1766164469795258368 |