Isopoda E(S100) and surface sediment characteristics of ANDEEP I-III stations in the Southern Ocean deep sea
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PANGAEA
2007
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| author | 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 |
| author_facet | 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 |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_847286 |
| institution | PANGAEA |
| language | en |
| publishDate | 2007 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Isopoda E(S100) and surface sediment characteristics of ANDEEP I-III stations in the Southern Ocean deep sea 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 AWI; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SPP1158 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. |
| title | Isopoda E(S100) and surface sediment characteristics of ANDEEP I-III stations in the Southern Ocean deep sea |
| topic | AWI; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SPP1158 |
| url | https://doi.org/10.1594/PANGAEA.847286 |