Age and origin of enigmatic megaherbs from the subantarctic islands
Biogeographic relationships in the southern hemisphere have puzzled biologists for the last two centuries. Once joined to form the supercontinent Gondwana, Africa, Antarctica, Australia, New Zealand and South America are widely separated by the Pacific and Indian oceans. Sir Joseph Hooker was the fi...
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ftnature:oai:nature.com:10101/npre.2007.1272.1 2023-05-15T13:46:06+02:00 Age and origin of enigmatic megaherbs from the subantarctic islands Steven J. Wagstaff Ilse Breitwieser Christopher Quinn Motomi Ito 2007-10-28T20:54:48Z http://precedings.nature.com/documents/1272/version/1 http://hdl.handle.net/10101/npre.2007.1272.1 unknown Creative Commons Attribution 3.0 License CC-BY Nature Precedings Ecology Plant Biology Evolutionary Biology Manuscript 2007 ftnature 2015-11-19T12:55:14Z Biogeographic relationships in the southern hemisphere have puzzled biologists for the last two centuries. Once joined to form the supercontinent Gondwana, Africa, Antarctica, Australia, New Zealand and South America are widely separated by the Pacific and Indian oceans. Sir Joseph Hooker was the first to suggest that Antarctica served as a corridor for plant migration not unlike the land-bridges in the northern hemisphere. While the Antarctic flora was largely erased by glaciation during the Pleistocene, at least some of these Antarctic plant communities found refuge on the subantarctic islands. Here we provide support for the hypothesis that giant herbs persisted in the subantactic islands prior to the onset of Pleistocene glaciation, then dispersed northward in response to glacial advance. Our findings provide further evidence that Antarctica has played a pivotal role in shaping southern hemisphere biogeography. Manuscript Antarc* Antarctic Antarctica Nature Precedings Antarctic The Antarctic Pacific Indian New Zealand Hooker ENVELOPE(-62.050,-62.050,-63.283,-63.283) |
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Open Polar |
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Nature Precedings |
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ftnature |
language |
unknown |
topic |
Ecology Plant Biology Evolutionary Biology |
spellingShingle |
Ecology Plant Biology Evolutionary Biology Steven J. Wagstaff Ilse Breitwieser Christopher Quinn Motomi Ito Age and origin of enigmatic megaherbs from the subantarctic islands |
topic_facet |
Ecology Plant Biology Evolutionary Biology |
description |
Biogeographic relationships in the southern hemisphere have puzzled biologists for the last two centuries. Once joined to form the supercontinent Gondwana, Africa, Antarctica, Australia, New Zealand and South America are widely separated by the Pacific and Indian oceans. Sir Joseph Hooker was the first to suggest that Antarctica served as a corridor for plant migration not unlike the land-bridges in the northern hemisphere. While the Antarctic flora was largely erased by glaciation during the Pleistocene, at least some of these Antarctic plant communities found refuge on the subantarctic islands. Here we provide support for the hypothesis that giant herbs persisted in the subantactic islands prior to the onset of Pleistocene glaciation, then dispersed northward in response to glacial advance. Our findings provide further evidence that Antarctica has played a pivotal role in shaping southern hemisphere biogeography. |
format |
Manuscript |
author |
Steven J. Wagstaff Ilse Breitwieser Christopher Quinn Motomi Ito |
author_facet |
Steven J. Wagstaff Ilse Breitwieser Christopher Quinn Motomi Ito |
author_sort |
Steven J. Wagstaff |
title |
Age and origin of enigmatic megaherbs from the subantarctic islands |
title_short |
Age and origin of enigmatic megaherbs from the subantarctic islands |
title_full |
Age and origin of enigmatic megaherbs from the subantarctic islands |
title_fullStr |
Age and origin of enigmatic megaherbs from the subantarctic islands |
title_full_unstemmed |
Age and origin of enigmatic megaherbs from the subantarctic islands |
title_sort |
age and origin of enigmatic megaherbs from the subantarctic islands |
publishDate |
2007 |
url |
http://precedings.nature.com/documents/1272/version/1 http://hdl.handle.net/10101/npre.2007.1272.1 |
long_lat |
ENVELOPE(-62.050,-62.050,-63.283,-63.283) |
geographic |
Antarctic The Antarctic Pacific Indian New Zealand Hooker |
geographic_facet |
Antarctic The Antarctic Pacific Indian New Zealand Hooker |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Nature Precedings |
op_rights |
Creative Commons Attribution 3.0 License |
op_rightsnorm |
CC-BY |
_version_ |
1766237006435713024 |