Speciation gradients and the distribution of biodiversity

Dolph Schluter () and Matthew W. Pennell
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Dolph Schluter: Biodiversity Research Centre, University of British Columbia
Matthew W. Pennell: Biodiversity Research Centre, University of British Columbia

Nature, 2017, vol. 546, issue 7656, 48-55

Abstract: Abstract Global patterns of biodiversity are influenced by spatial and environmental variations in the rate at which new species form. We relate variations in speciation rates to six key patterns of biodiversity worldwide, including the species–area relationship, latitudinal gradients in species and genetic diversity, and between-habitat differences in species richness. Although they sometimes mirror biodiversity patterns, recent rates of speciation, at the tip of the tree of life, are often highest where species richness is low. Speciation gradients therefore shape, but are also shaped by, biodiversity gradients and are often more useful for predicting future patterns of biodiversity than for interpreting the past.

Date: 2017
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DOI: 10.1038/nature22897

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