Towards a generalized biogeography of the Southern Ocean benthos
Abstract Aim To investigate whether the biogeographical regions proposed by J. W. Hedgpeth and widely adopted by other authors hold true, are an oversimplification or with further data might show a unified Antarctic province. Location Southern Hemisphere. Methods The distributions of 1318 species of...
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crwiley:10.1111/j.1365-2699.2008.01979.x 2024-10-13T14:02:26+00:00 Towards a generalized biogeography of the Southern Ocean benthos Griffiths, Huw J. Barnes, David K. A. Linse, Katrin 2008 http://dx.doi.org/10.1111/j.1365-2699.2008.01979.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2699.2008.01979.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2699.2008.01979.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Biogeography volume 36, issue 1, page 162-177 ISSN 0305-0270 1365-2699 journal-article 2008 crwiley https://doi.org/10.1111/j.1365-2699.2008.01979.x 2024-09-17T04:48:23Z Abstract Aim To investigate whether the biogeographical regions proposed by J. W. Hedgpeth and widely adopted by other authors hold true, are an oversimplification or with further data might show a unified Antarctic province. Location Southern Hemisphere. Methods The distributions of 1318 species of bivalves, 4656 species of gastropods, 1465 species of cheilostome and 167 species of cyclostome bryozoans were analysed for 29 regions in the Southern Hemisphere, including South American, South African, Tasmanian, New Zealand, sub‐Antarctic and Antarctic regions. We present data on species richness, rates of endemism, patterns of radiation, faunal similarities and multivariate biogeographical analyses. Results The most striking pattern to emerge from our data set of species counts per region was a strong east–west hemispheric asymmetry, with high species numbers in New Zealand, Tasmania and South Africa and low numbers in South America. In contrast, no difference was found in richness between the east and west parts of the Southern Ocean. We compared findings in our model taxa with published data on ascidians, cephalopods and pycnogonids. Further evidence of strong faunal links between the Antarctic and South America is reported in this study, although we found little evidence for a biogeographical relationship between the Antarctic or South America and New Zealand/Tasmania. Strong evidence exists for a long‐term influence of the Antarctic Circumpolar Current upon the distribution of Southern Ocean benthos. This is demonstrated by the reduced prevalence of South American species in the Antarctic and sub‐Antarctic with increasing distance from South America in the direction of the current. Three of our four study taxa (bivalves, cheilostomes and cyclostomes) show the Southern Ocean as a ‘single functional unit’ with no evidence for a biogeographical split between east and west. Main conclusions Unlike the biogeographical schemes previously proposed, we show that biogeographical regions in the Southern Ocean differ ... Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Wiley Online Library Antarctic Southern Ocean The Antarctic New Zealand Journal of Biogeography 36 1 162 177 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Aim To investigate whether the biogeographical regions proposed by J. W. Hedgpeth and widely adopted by other authors hold true, are an oversimplification or with further data might show a unified Antarctic province. Location Southern Hemisphere. Methods The distributions of 1318 species of bivalves, 4656 species of gastropods, 1465 species of cheilostome and 167 species of cyclostome bryozoans were analysed for 29 regions in the Southern Hemisphere, including South American, South African, Tasmanian, New Zealand, sub‐Antarctic and Antarctic regions. We present data on species richness, rates of endemism, patterns of radiation, faunal similarities and multivariate biogeographical analyses. Results The most striking pattern to emerge from our data set of species counts per region was a strong east–west hemispheric asymmetry, with high species numbers in New Zealand, Tasmania and South Africa and low numbers in South America. In contrast, no difference was found in richness between the east and west parts of the Southern Ocean. We compared findings in our model taxa with published data on ascidians, cephalopods and pycnogonids. Further evidence of strong faunal links between the Antarctic and South America is reported in this study, although we found little evidence for a biogeographical relationship between the Antarctic or South America and New Zealand/Tasmania. Strong evidence exists for a long‐term influence of the Antarctic Circumpolar Current upon the distribution of Southern Ocean benthos. This is demonstrated by the reduced prevalence of South American species in the Antarctic and sub‐Antarctic with increasing distance from South America in the direction of the current. Three of our four study taxa (bivalves, cheilostomes and cyclostomes) show the Southern Ocean as a ‘single functional unit’ with no evidence for a biogeographical split between east and west. Main conclusions Unlike the biogeographical schemes previously proposed, we show that biogeographical regions in the Southern Ocean differ ... |
format |
Article in Journal/Newspaper |
author |
Griffiths, Huw J. Barnes, David K. A. Linse, Katrin |
spellingShingle |
Griffiths, Huw J. Barnes, David K. A. Linse, Katrin Towards a generalized biogeography of the Southern Ocean benthos |
author_facet |
Griffiths, Huw J. Barnes, David K. A. Linse, Katrin |
author_sort |
Griffiths, Huw J. |
title |
Towards a generalized biogeography of the Southern Ocean benthos |
title_short |
Towards a generalized biogeography of the Southern Ocean benthos |
title_full |
Towards a generalized biogeography of the Southern Ocean benthos |
title_fullStr |
Towards a generalized biogeography of the Southern Ocean benthos |
title_full_unstemmed |
Towards a generalized biogeography of the Southern Ocean benthos |
title_sort |
towards a generalized biogeography of the southern ocean benthos |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1111/j.1365-2699.2008.01979.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2699.2008.01979.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2699.2008.01979.x |
geographic |
Antarctic Southern Ocean The Antarctic New Zealand |
geographic_facet |
Antarctic Southern Ocean The Antarctic New Zealand |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Journal of Biogeography volume 36, issue 1, page 162-177 ISSN 0305-0270 1365-2699 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2699.2008.01979.x |
container_title |
Journal of Biogeography |
container_volume |
36 |
container_issue |
1 |
container_start_page |
162 |
op_container_end_page |
177 |
_version_ |
1812817225531260928 |