Isopoda E(S100) and surface sediment characteristics of ANDEEP I-III stations in the Southern Ocean deep sea
Abstract: Shallow marine benthic communities around Antarctica show high levels of endemism, gigantism, slow growth, longevity and late maturity, as well as adaptive radiations that have generated considerable biodiversity in some taxa1. The deeper parts of the Southern Ocean exhibit some unique env...
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ftwilliammarycol:oai:scholarworks.wm.edu:od-1679 2023-05-15T13:33:24+02:00 Isopoda E(S100) and surface sediment characteristics of ANDEEP I-III stations in the Southern Ocean deep sea Choudhury, Madhumita Cornelius, Nils Raupach, Michael De Mesel, Ilse 2007-06-18T07:00:00Z https://scholarworks.wm.edu/od/680 https://doi.pangaea.de/10.1594/PANGAEA.847286 eng eng W&M ScholarWorks https://scholarworks.wm.edu/od/680 https://doi.pangaea.de/10.1594/PANGAEA.847286 Open Data Sets text 2007 ftwilliammarycol 2021-02-22T12:55:53Z Abstract: Shallow marine benthic communities around Antarctica show high levels of endemism, gigantism, slow growth, longevity and late maturity, as well as adaptive radiations that have generated considerable biodiversity in some taxa1. The deeper parts of the Southern Ocean exhibit some unique environmental features, including a very deep continental shelf2 and a weakly stratified water column, and are the source for much of the deep water in the world ocean. These features suggest that deep-sea faunas around the Antarctic may be related both to adjacent shelf communities and to those in other oceans. Unlike shallow-water Antarctic benthic communities, however, little is known about life in this vast deep-sea region2, 3. Here, we report new data from recent sampling expeditions in the deep Weddell Sea and adjacent areas (748-6,348 m water depth) that reveal high levels of new biodiversity; for example, 674 isopods species, of which 585 were new to science. Bathymetric and biogeographic trends varied between taxa. In groups such as the isopods and polychaetes, slope assemblages included species that have invaded from the shelf. In other taxa, the shelf and slope assemblages were more distinct. Abyssal faunas tended to have stronger links to other oceans, particularly the Atlantic, but mainly in taxa with good dispersal capabilities, such as the Foraminifera. The isopods, ostracods and nematodes, which are poor dispersers, include many species currently known only from the Southern Ocean. Our findings challenge suggestions that deep-sea diversity is depressed in the Southern Ocean and provide a basis for exploring the evolutionary significance of the varied biogeographic patterns observed in this remote environment. Category: geoscientificInformation Source: Supplement to: Brandt, Angelika; Gooday, Andrew J; Brandão, Simone N; Brix, Saskia; Brökeland, Wiebke; Cedhagen, Tomas; Choudhury, Madhumita; Cornelius, Nils; Danis, Bruno; De Mesel, Ilse; Diaz, Robert; Gillan, David C; Ebbe, Brigitte; Howe, John; Janussen, Dorte; Kaiser, Stefanie; Linse, Katrin; Malyutina, Marina; Pawlowski, Jan; Raupach, Michael R; Vanreusel, Ann (2007): First insights into the biodiversity and biogeography of the Southern Ocean deep sea. Nature, 447(7142), 307-311, https://doi.org/10.1038/nature05827 Supplemental Information: Not Availble Coverage: Not Available Text Antarc* Antarctic Antarctica Southern Ocean Weddell Sea W&M ScholarWorks Antarctic Southern Ocean The Antarctic Weddell Sea Weddell Nils ENVELOPE(48.017,48.017,-68.067,-68.067) Diaz ENVELOPE(-60.667,-60.667,-63.783,-63.783) |
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Open Polar |
collection |
W&M ScholarWorks |
op_collection_id |
ftwilliammarycol |
language |
English |
description |
Abstract: Shallow marine benthic communities around Antarctica show high levels of endemism, gigantism, slow growth, longevity and late maturity, as well as adaptive radiations that have generated considerable biodiversity in some taxa1. The deeper parts of the Southern Ocean exhibit some unique environmental features, including a very deep continental shelf2 and a weakly stratified water column, and are the source for much of the deep water in the world ocean. These features suggest that deep-sea faunas around the Antarctic may be related both to adjacent shelf communities and to those in other oceans. Unlike shallow-water Antarctic benthic communities, however, little is known about life in this vast deep-sea region2, 3. Here, we report new data from recent sampling expeditions in the deep Weddell Sea and adjacent areas (748-6,348 m water depth) that reveal high levels of new biodiversity; for example, 674 isopods species, of which 585 were new to science. Bathymetric and biogeographic trends varied between taxa. In groups such as the isopods and polychaetes, slope assemblages included species that have invaded from the shelf. In other taxa, the shelf and slope assemblages were more distinct. Abyssal faunas tended to have stronger links to other oceans, particularly the Atlantic, but mainly in taxa with good dispersal capabilities, such as the Foraminifera. The isopods, ostracods and nematodes, which are poor dispersers, include many species currently known only from the Southern Ocean. Our findings challenge suggestions that deep-sea diversity is depressed in the Southern Ocean and provide a basis for exploring the evolutionary significance of the varied biogeographic patterns observed in this remote environment. Category: geoscientificInformation Source: Supplement to: Brandt, Angelika; Gooday, Andrew J; Brandão, Simone N; Brix, Saskia; Brökeland, Wiebke; Cedhagen, Tomas; Choudhury, Madhumita; Cornelius, Nils; Danis, Bruno; De Mesel, Ilse; Diaz, Robert; Gillan, David C; Ebbe, Brigitte; Howe, John; Janussen, Dorte; Kaiser, Stefanie; Linse, Katrin; Malyutina, Marina; Pawlowski, Jan; Raupach, Michael R; Vanreusel, Ann (2007): First insights into the biodiversity and biogeography of the Southern Ocean deep sea. Nature, 447(7142), 307-311, https://doi.org/10.1038/nature05827 Supplemental Information: Not Availble Coverage: Not Available |
format |
Text |
author |
Choudhury, Madhumita Cornelius, Nils Raupach, Michael De Mesel, Ilse |
spellingShingle |
Choudhury, Madhumita Cornelius, Nils Raupach, Michael De Mesel, Ilse Isopoda E(S100) and surface sediment characteristics of ANDEEP I-III stations in the Southern Ocean deep sea |
author_facet |
Choudhury, Madhumita Cornelius, Nils Raupach, Michael De Mesel, Ilse |
author_sort |
Choudhury, Madhumita |
title |
Isopoda E(S100) and surface sediment characteristics of ANDEEP I-III stations in the Southern Ocean deep sea |
title_short |
Isopoda E(S100) and surface sediment characteristics of ANDEEP I-III stations in the Southern Ocean deep sea |
title_full |
Isopoda E(S100) and surface sediment characteristics of ANDEEP I-III stations in the Southern Ocean deep sea |
title_fullStr |
Isopoda E(S100) and surface sediment characteristics of ANDEEP I-III stations in the Southern Ocean deep sea |
title_full_unstemmed |
Isopoda E(S100) and surface sediment characteristics of ANDEEP I-III stations in the Southern Ocean deep sea |
title_sort |
isopoda e(s100) and surface sediment characteristics of andeep i-iii stations in the southern ocean deep sea |
publisher |
W&M ScholarWorks |
publishDate |
2007 |
url |
https://scholarworks.wm.edu/od/680 https://doi.pangaea.de/10.1594/PANGAEA.847286 |
long_lat |
ENVELOPE(48.017,48.017,-68.067,-68.067) ENVELOPE(-60.667,-60.667,-63.783,-63.783) |
geographic |
Antarctic Southern Ocean The Antarctic Weddell Sea Weddell Nils Diaz |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell Sea Weddell Nils Diaz |
genre |
Antarc* Antarctic Antarctica Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean Weddell Sea |
op_source |
Open Data Sets |
op_relation |
https://scholarworks.wm.edu/od/680 https://doi.pangaea.de/10.1594/PANGAEA.847286 |
_version_ |
1766041926743621632 |