Effects of Late-Cenozoic Glaciation on Habitat Availability in Antarctic Benthic Shrimps (Crustacea:
Marine invertebrates inhabiting the high Antarctic continental shelves are challenged by disturbance of the seafloor by grounded ice, low but stable water temperatures and variable food availability in response to seasonal sea-ice cover. Though a high diversity of life has successfully adapted to su...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.660.4205 2023-05-15T13:38:01+02:00 Effects of Late-Cenozoic Glaciation on Habitat Availability in Antarctic Benthic Shrimps (Crustacea: Decapoda Caridea Johannes Dambach Sven Thatje Zeenatul Basher Michael J. Raupach The Pennsylvania State University CiteSeerX Archives 2012 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.660.4205 http://eprints.soton.ac.uk/342450/1/Dambach_PLoSONE_12.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.660.4205 http://eprints.soton.ac.uk/342450/1/Dambach_PLoSONE_12.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://eprints.soton.ac.uk/342450/1/Dambach_PLoSONE_12.pdf text 2012 ftciteseerx 2016-01-08T16:51:04Z Marine invertebrates inhabiting the high Antarctic continental shelves are challenged by disturbance of the seafloor by grounded ice, low but stable water temperatures and variable food availability in response to seasonal sea-ice cover. Though a high diversity of life has successfully adapted to such conditions, it is generally agreed that during the Last Glacial Maximum (LGM) the large-scale cover of the Southern Ocean by multi-annual sea ice and the advance of the continental ice sheets across the shelf faced life with conditions, exceeding those seen today by an order of magnitude. Conditions prevailing at the LGM may have therefore acted as a bottleneck event to both the ecology as well as genetic diversity of today’s fauna. Here, we use for the first time specific Species Distribution Models (SDMs) for marine arthropods of the Southern Ocean to assess effects of habitat contraction during the LGM on the three most common benthic caridean shrimp species that exhibit a strong depth zonation on the Antarctic continental shelf. While the shallow-water species Chorismus antarcticus and Notocrangon antarcticus were limited to a drastically reduced habitat during the LGM, the deep-water shrimp Nematocarcinus lanceopes found refuge in the Southern Ocean deep sea. The modeling results are in accordance with genetic diversity patterns available for C. antarcticus and N. lanceopes and support the hypothesis that Text Antarc* Antarctic antarcticus Sea ice Southern Ocean Unknown Antarctic Southern Ocean The Antarctic |
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ftciteseerx |
language |
English |
description |
Marine invertebrates inhabiting the high Antarctic continental shelves are challenged by disturbance of the seafloor by grounded ice, low but stable water temperatures and variable food availability in response to seasonal sea-ice cover. Though a high diversity of life has successfully adapted to such conditions, it is generally agreed that during the Last Glacial Maximum (LGM) the large-scale cover of the Southern Ocean by multi-annual sea ice and the advance of the continental ice sheets across the shelf faced life with conditions, exceeding those seen today by an order of magnitude. Conditions prevailing at the LGM may have therefore acted as a bottleneck event to both the ecology as well as genetic diversity of today’s fauna. Here, we use for the first time specific Species Distribution Models (SDMs) for marine arthropods of the Southern Ocean to assess effects of habitat contraction during the LGM on the three most common benthic caridean shrimp species that exhibit a strong depth zonation on the Antarctic continental shelf. While the shallow-water species Chorismus antarcticus and Notocrangon antarcticus were limited to a drastically reduced habitat during the LGM, the deep-water shrimp Nematocarcinus lanceopes found refuge in the Southern Ocean deep sea. The modeling results are in accordance with genetic diversity patterns available for C. antarcticus and N. lanceopes and support the hypothesis that |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Decapoda Caridea Johannes Dambach Sven Thatje Zeenatul Basher Michael J. Raupach |
spellingShingle |
Decapoda Caridea Johannes Dambach Sven Thatje Zeenatul Basher Michael J. Raupach Effects of Late-Cenozoic Glaciation on Habitat Availability in Antarctic Benthic Shrimps (Crustacea: |
author_facet |
Decapoda Caridea Johannes Dambach Sven Thatje Zeenatul Basher Michael J. Raupach |
author_sort |
Decapoda Caridea |
title |
Effects of Late-Cenozoic Glaciation on Habitat Availability in Antarctic Benthic Shrimps (Crustacea: |
title_short |
Effects of Late-Cenozoic Glaciation on Habitat Availability in Antarctic Benthic Shrimps (Crustacea: |
title_full |
Effects of Late-Cenozoic Glaciation on Habitat Availability in Antarctic Benthic Shrimps (Crustacea: |
title_fullStr |
Effects of Late-Cenozoic Glaciation on Habitat Availability in Antarctic Benthic Shrimps (Crustacea: |
title_full_unstemmed |
Effects of Late-Cenozoic Glaciation on Habitat Availability in Antarctic Benthic Shrimps (Crustacea: |
title_sort |
effects of late-cenozoic glaciation on habitat availability in antarctic benthic shrimps (crustacea: |
publishDate |
2012 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.660.4205 http://eprints.soton.ac.uk/342450/1/Dambach_PLoSONE_12.pdf |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic antarcticus Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic antarcticus Sea ice Southern Ocean |
op_source |
http://eprints.soton.ac.uk/342450/1/Dambach_PLoSONE_12.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.660.4205 http://eprints.soton.ac.uk/342450/1/Dambach_PLoSONE_12.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766100627586285568 |