Marine latitudinal diversity gradients: Tests of causal hypotheses
Latitudinal diversity gradients are first-order expressions of diversity patterns both on land and in the oceans, although the current hypotheses that seek to explain them are based chiefly on terrestrial data. We have assembled a database of the geographic ranges of 3,916 species of marine prosobra...
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ftpubmed:oai:pubmedcentral.nih.gov:19899 2023-05-15T15:05:06+02:00 Marine latitudinal diversity gradients: Tests of causal hypotheses Roy, Kaustuv Jablonski, David Valentine, James W. Rosenberg, Gary 1998-03-31 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC19899 http://www.ncbi.nlm.nih.gov/pubmed/9520429 en eng The National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC19899 http://www.ncbi.nlm.nih.gov/pubmed/9520429 Copyright © 1998, The National Academy of Sciences Biological Sciences Text 1998 ftpubmed 2013-08-29T06:57:10Z Latitudinal diversity gradients are first-order expressions of diversity patterns both on land and in the oceans, although the current hypotheses that seek to explain them are based chiefly on terrestrial data. We have assembled a database of the geographic ranges of 3,916 species of marine prosobranch gastropods living on the shelves of the western Atlantic and eastern Pacific Oceans, from the tropics to the Arctic Ocean. Western Atlantic and eastern Pacific diversities are similar, and the diversity gradients are strikingly similar despite many important physical and historical differences between the oceans. This shared diversity pattern cannot be explained by: (i) latitudinal differences in species range-length (Rapoport’s rule); (ii) species-area effects; or (iii) recent geologic histories. One parameter that does correlate significantly with diversity in both oceans is solar energy input, as represented by average sea surface temperature. If this correlation is causal, sea surface temperature is probably linked to diversity through some aspect of productivity. In this case, diversity is an evolutionary outcome of trophodynamic processes inherent in ecosystems, and not just a byproduct of physical geographies. Text Arctic Arctic Ocean PubMed Central (PMC) Arctic Arctic Ocean Pacific |
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Biological Sciences |
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Biological Sciences Roy, Kaustuv Jablonski, David Valentine, James W. Rosenberg, Gary Marine latitudinal diversity gradients: Tests of causal hypotheses |
topic_facet |
Biological Sciences |
description |
Latitudinal diversity gradients are first-order expressions of diversity patterns both on land and in the oceans, although the current hypotheses that seek to explain them are based chiefly on terrestrial data. We have assembled a database of the geographic ranges of 3,916 species of marine prosobranch gastropods living on the shelves of the western Atlantic and eastern Pacific Oceans, from the tropics to the Arctic Ocean. Western Atlantic and eastern Pacific diversities are similar, and the diversity gradients are strikingly similar despite many important physical and historical differences between the oceans. This shared diversity pattern cannot be explained by: (i) latitudinal differences in species range-length (Rapoport’s rule); (ii) species-area effects; or (iii) recent geologic histories. One parameter that does correlate significantly with diversity in both oceans is solar energy input, as represented by average sea surface temperature. If this correlation is causal, sea surface temperature is probably linked to diversity through some aspect of productivity. In this case, diversity is an evolutionary outcome of trophodynamic processes inherent in ecosystems, and not just a byproduct of physical geographies. |
format |
Text |
author |
Roy, Kaustuv Jablonski, David Valentine, James W. Rosenberg, Gary |
author_facet |
Roy, Kaustuv Jablonski, David Valentine, James W. Rosenberg, Gary |
author_sort |
Roy, Kaustuv |
title |
Marine latitudinal diversity gradients: Tests of causal hypotheses |
title_short |
Marine latitudinal diversity gradients: Tests of causal hypotheses |
title_full |
Marine latitudinal diversity gradients: Tests of causal hypotheses |
title_fullStr |
Marine latitudinal diversity gradients: Tests of causal hypotheses |
title_full_unstemmed |
Marine latitudinal diversity gradients: Tests of causal hypotheses |
title_sort |
marine latitudinal diversity gradients: tests of causal hypotheses |
publisher |
The National Academy of Sciences |
publishDate |
1998 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC19899 http://www.ncbi.nlm.nih.gov/pubmed/9520429 |
geographic |
Arctic Arctic Ocean Pacific |
geographic_facet |
Arctic Arctic Ocean Pacific |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC19899 http://www.ncbi.nlm.nih.gov/pubmed/9520429 |
op_rights |
Copyright © 1998, The National Academy of Sciences |
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1766336859715141632 |