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. 2003 Aug 15;301(5635):976-8.
doi: 10.1126/science.1086909. Epub 2003 Jul 24.

Geographic barriers isolate endemic populations of hyperthermophilic archaea

Rachel J Whitaker  1 , Dennis W Grogan, John W Taylor
Affiliations

Geographic barriers isolate endemic populations of hyperthermophilic archaea

Rachel J Whitaker et al. Science. .

Abstract

Barriers to dispersal between populations allow them to diverge through local adaptation or random genetic drift. High-resolution multilocus sequence analysis revealed that, on a global scale, populations of hyperthermophilic microorganisms are isolated from one another by geographic barriers and have diverged over the course of their recent evolutionary history. The identification of a biogeographic pattern in the archaeon Sulfolobus challenges the current model of microbial biodiversity in which unrestricted dispersal constrains the development of global species richness.

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