Technical Comments

Response to Comment on "The Latitudinal Gradient in Recent Speciation and Extinction Rates of Birds and Mammals"

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Science  15 Feb 2008:
Vol. 319, Issue 5865, pp. 901
DOI: 10.1126/science.1150828

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Abstract

Tobias et al. suggest that taxonomic uncertainty, an underestimated correction for the lag-time to speciation, and the sister-species method undermine our estimates of speciation rates at tropical latitudes. However, our estimates incorporated a correction for taxonomic uncertainty and are robust to small increases in the lag-time correction. Contrary to the claim of Tobias et al., we find no indication that the sister-species method underestimates tropical diversification rates.

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