Skip to content Skip to navigation

Article: Origins of marine patterns of biodiversity: some correlates and applications

Publication: Palaeontology
Volume: 53
Part: 6
Publication Date: November 2010
Page(s): 1203 1210
Author(s): James W. Valentine and David Jablonski
Addition Information

How to Cite

VALENTINE, J. W., JABLONSKI, D. 2010. Origins of marine patterns of biodiversity: some correlates and applications. Palaeontology53, 6, 1203–1210.

Online Version Hosted By

Wiley Online Library
Get Article: Wiley Online Library [Pay-to-View Access] |


Marine shelf diversity patterns correlate with macroecological features of basic importance that may play causal roles in macroevolution. We have investigated the global diversity pattern of living Bivalvia, which is dominated by the latitudinal diversity gradient (LDG), maintained by high tropical origination rates. Generic-level lineages expand poleward, chiefly through speciation, so that species richness within provinces and globally is positively correlated with generic geographical ranges. A gradient in diversity accommodation progressively lowers both immigration and speciation rates in higher latitudes. The LDG correlates with seasonality of trophic resources but not with area; tropical provinces are not diverse because they are large but because they are tropical. A similar dynamic evidently underlays Jurassic and Carboniferous LDGs. Larval developmental modes correlate with the LDG and thus with resource seasonality, with tropical dominance of planktotrophs offset by increasing nonplanktotrophy to poleward. The acquisition of planktotrophy in several early Palaeozoic clades indicates a change in macroecological relationships during Cambrian and Ordovician radiations.
PalAss Go! URL: | Twitter: Share on Twitter | Facebook: Share on Facebook | Google+: Share on Google+