title: Islands in the sky: the impact of Pleistocene climate cycles on biodiversity.
abstract: Genetic studies of organisms based on coalescent modeling and paleoenvironmental data, including a new study in BMC Biology of Mexican jays in the sky islands of Arizona and northern Mexico, show that populations differentiated in multiple refugia during and after glacial cycles.
authors.affiliation: Department of Natural History, Royal Ontario Museum, Toronto, Ontario, Canada. allanb@rom.on.ca
authors.forename: Allan J
authors.initials: AJ
authors.lastname: Baker
mesh_terms: D000818:Animals; D044822:Biodiversity; D005075:Biological Evolution; D057231:Climate Change; D004272:DNA, Mitochondrial / Q000737:chemistry; D049810:Genetic Speciation; D046448:Ice Cover; D008800:Mexico; D008962:Models, Theoretical; D011157:Population Dynamics; D020308:Songbirds / Q000235:genetics / Q000502:physiology*
chemical_list: D004272:DNA, Mitochondrial