Effects of Late-Cenozoic glaciation on habitat availability in Antarctic benthic shrimps (Crustacea: Decapoda: Caridea)
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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ftsouthampton:oai:eprints.soton.ac.uk:342450 2023-07-30T03:56:38+02:00 Effects of Late-Cenozoic glaciation on habitat availability in Antarctic benthic shrimps (Crustacea: Decapoda: Caridea) Dambach, J. Thatje, S. Roedder, D. Basher, Z. Raupach, M.J. 2012-10 text https://eprints.soton.ac.uk/342450/ https://eprints.soton.ac.uk/342450/1/Dambach_PLoSONE_12.pdf en eng https://eprints.soton.ac.uk/342450/1/Dambach_PLoSONE_12.pdf Dambach, J., Thatje, S., Roedder, D., Basher, Z. and Raupach, M.J. (2012) Effects of Late-Cenozoic glaciation on habitat availability in Antarctic benthic shrimps (Crustacea: Decapoda: Caridea). PLoS ONE, 7 (9), e46283. (doi:10.1371/journal.pone.0046283 <http://dx.doi.org/10.1371/journal.pone.0046283>). Article PeerReviewed 2012 ftsouthampton https://doi.org/10.1371/journal.pone.0046283 2023-07-09T21:41:03Z 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 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 habitat contraction at the LGM resulted in a loss of genetic diversity in shallow water benthos. Article in Journal/Newspaper Antarc* Antarctic antarcticus Sea ice Southern Ocean University of Southampton: e-Prints Soton Antarctic Southern Ocean The Antarctic PLoS ONE 7 9 e46283 |
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Open Polar |
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University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
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 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 habitat contraction at the LGM resulted in a loss of genetic diversity in shallow water benthos. |
format |
Article in Journal/Newspaper |
author |
Dambach, J. Thatje, S. Roedder, D. Basher, Z. Raupach, M.J. |
spellingShingle |
Dambach, J. Thatje, S. Roedder, D. Basher, Z. Raupach, M.J. Effects of Late-Cenozoic glaciation on habitat availability in Antarctic benthic shrimps (Crustacea: Decapoda: Caridea) |
author_facet |
Dambach, J. Thatje, S. Roedder, D. Basher, Z. Raupach, M.J. |
author_sort |
Dambach, J. |
title |
Effects of Late-Cenozoic glaciation on habitat availability in Antarctic benthic shrimps (Crustacea: Decapoda: Caridea) |
title_short |
Effects of Late-Cenozoic glaciation on habitat availability in Antarctic benthic shrimps (Crustacea: Decapoda: Caridea) |
title_full |
Effects of Late-Cenozoic glaciation on habitat availability in Antarctic benthic shrimps (Crustacea: Decapoda: Caridea) |
title_fullStr |
Effects of Late-Cenozoic glaciation on habitat availability in Antarctic benthic shrimps (Crustacea: Decapoda: Caridea) |
title_full_unstemmed |
Effects of Late-Cenozoic glaciation on habitat availability in Antarctic benthic shrimps (Crustacea: Decapoda: Caridea) |
title_sort |
effects of late-cenozoic glaciation on habitat availability in antarctic benthic shrimps (crustacea: decapoda: caridea) |
publishDate |
2012 |
url |
https://eprints.soton.ac.uk/342450/ https://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_relation |
https://eprints.soton.ac.uk/342450/1/Dambach_PLoSONE_12.pdf Dambach, J., Thatje, S., Roedder, D., Basher, Z. and Raupach, M.J. (2012) Effects of Late-Cenozoic glaciation on habitat availability in Antarctic benthic shrimps (Crustacea: Decapoda: Caridea). PLoS ONE, 7 (9), e46283. (doi:10.1371/journal.pone.0046283 <http://dx.doi.org/10.1371/journal.pone.0046283>). |
op_doi |
https://doi.org/10.1371/journal.pone.0046283 |
container_title |
PLoS ONE |
container_volume |
7 |
container_issue |
9 |
container_start_page |
e46283 |
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1772814004915273728 |