Cenozoic palaeogeography and the rise of modern biodiversity patterns
The steepest latitudinal and longitudinal gradients in taxonomic diversity at the present day are those associated with tropical high diversity foci. Although there has been a tendency in the past to regard these features as either evolutionary 'cradles' or 'museums' of considera...
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2002
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ftnerc:oai:nora.nerc.ac.uk:10375 2023-05-15T13:45:10+02:00 Cenozoic palaeogeography and the rise of modern biodiversity patterns Crame, J.A. Rosen, B.R. 2002 http://nora.nerc.ac.uk/id/eprint/10375/ unknown Geological Society of London Crame, J.A. orcid:0000-0002-5027-9965 Rosen, B.R. 2002 Cenozoic palaeogeography and the rise of modern biodiversity patterns. In: Palaeobiogeography and biodiversity change: The Ordovician and Mesozoic-Cenozoic-radiations. Geological Society of London, 153-168. (Geological Society Special Publication, 194). Ecology and Environment Publication - Book Section NonPeerReviewed 2002 ftnerc 2023-02-04T19:26:40Z The steepest latitudinal and longitudinal gradients in taxonomic diversity at the present day are those associated with tropical high diversity foci. Although there has been a tendency in the past to regard these features as either evolutionary 'cradles' or 'museums' of considerable antiquity, this may not be the case. Within the marine realm, a uniform, pan-tropical fauna was progressively disrupted by a series of plate tectonic events, the most important of which were the Early Miocene (c. 20 Ma) collisions of Africa/Arabia with Europe and Australia/New Guinea with Indonesia, and the Middle Miocene-latest Pliocene rise of the Central American Isthmus. This had the net effect of establishing two main tropical high diversity foci: the Indo-West Pacific and the Atlantic-Caribbean-East Pacific. Similar foci were also established at the same time in the terrestrial realm. Together with the physical isolation of Antarctica, these same tectonic events contributed significantly to global cooling throughout the Cenozoic Era. This in turn led to the imposition of a series of thermally defined provinces, and thus a considerable degree of biotic differentiation on a regional scale. However, something else seems to have been involved in the creation of very steep tropical diversity peaks. This could in part be a coincidental radiation of a series of unrelated taxa, or some sort of evolutionary feedback mechanism,between interacting clades. Alternatively, Late Cenozoic rates of origination may have been enhanced by an external forcing mechanism such as changes in Orbital Range Dynamics. Book Part Antarc* Antarctica Natural Environment Research Council: NERC Open Research Archive Pacific |
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Natural Environment Research Council: NERC Open Research Archive |
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topic |
Ecology and Environment |
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Ecology and Environment Crame, J.A. Rosen, B.R. Cenozoic palaeogeography and the rise of modern biodiversity patterns |
topic_facet |
Ecology and Environment |
description |
The steepest latitudinal and longitudinal gradients in taxonomic diversity at the present day are those associated with tropical high diversity foci. Although there has been a tendency in the past to regard these features as either evolutionary 'cradles' or 'museums' of considerable antiquity, this may not be the case. Within the marine realm, a uniform, pan-tropical fauna was progressively disrupted by a series of plate tectonic events, the most important of which were the Early Miocene (c. 20 Ma) collisions of Africa/Arabia with Europe and Australia/New Guinea with Indonesia, and the Middle Miocene-latest Pliocene rise of the Central American Isthmus. This had the net effect of establishing two main tropical high diversity foci: the Indo-West Pacific and the Atlantic-Caribbean-East Pacific. Similar foci were also established at the same time in the terrestrial realm. Together with the physical isolation of Antarctica, these same tectonic events contributed significantly to global cooling throughout the Cenozoic Era. This in turn led to the imposition of a series of thermally defined provinces, and thus a considerable degree of biotic differentiation on a regional scale. However, something else seems to have been involved in the creation of very steep tropical diversity peaks. This could in part be a coincidental radiation of a series of unrelated taxa, or some sort of evolutionary feedback mechanism,between interacting clades. Alternatively, Late Cenozoic rates of origination may have been enhanced by an external forcing mechanism such as changes in Orbital Range Dynamics. |
format |
Book Part |
author |
Crame, J.A. Rosen, B.R. |
author_facet |
Crame, J.A. Rosen, B.R. |
author_sort |
Crame, J.A. |
title |
Cenozoic palaeogeography and the rise of modern biodiversity patterns |
title_short |
Cenozoic palaeogeography and the rise of modern biodiversity patterns |
title_full |
Cenozoic palaeogeography and the rise of modern biodiversity patterns |
title_fullStr |
Cenozoic palaeogeography and the rise of modern biodiversity patterns |
title_full_unstemmed |
Cenozoic palaeogeography and the rise of modern biodiversity patterns |
title_sort |
cenozoic palaeogeography and the rise of modern biodiversity patterns |
publisher |
Geological Society of London |
publishDate |
2002 |
url |
http://nora.nerc.ac.uk/id/eprint/10375/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Crame, J.A. orcid:0000-0002-5027-9965 Rosen, B.R. 2002 Cenozoic palaeogeography and the rise of modern biodiversity patterns. In: Palaeobiogeography and biodiversity change: The Ordovician and Mesozoic-Cenozoic-radiations. Geological Society of London, 153-168. (Geological Society Special Publication, 194). |
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1766214107757805568 |