Geographic barriers isolate endemic populations of hyperthermophilic archaea.
basic_science · Level V
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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.
Medical subject headings
- Ecosystem
- Geologic Sediments
- Sulfolobus
- Water Microbiology