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Journal article
Marine latitudinal diversity gradients: Tests of causal hypotheses
Proceedings of the National Academy of Sciences - PNAS, v 95(7), pp 3699-3702
31 Mar 1998
PMID: 9520429
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Abstract
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.
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Details
- Title
- Marine latitudinal diversity gradients: Tests of causal hypotheses
- Creators
- Kaustuv Roy - University of California, San DiegoDavid JablonskiJames W. ValentineGary Rosenberg
- Publication Details
- Proceedings of the National Academy of Sciences - PNAS, v 95(7), pp 3699-3702
- Publisher
- The National Academy of Sciences
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES); Malacology
- Web of Science ID
- WOS:000072848500069
- Scopus ID
- 2-s2.0-0032584154
- Other Identifier
- 991019169583404721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Ecology