Rachel J. Whitaker, Philosophical Transactions of the Royal Society B: Biological Sciences
This is a review article about microbial biogeography and speciation published in The Philosophical Transactions of the Royal Society of London (2006). The author focuses specifically on the possibility of allopatric speciation in microbes. Topics covered include defining microbial species and speciation, genetic markers of differentiation among populations, evidence of geographical isolation, biological determinants of evolutionary rates and dispersal, and possible future research directions. There is an extensive bibliography.