| phylogeographic and demographic effects of pleistocene climatic fluctuations in a montane salamander, plethodon fourchensis. | climatic changes associated with pleistocene glacial cycles profoundly affected species distributions, patterns of interpopulation gene flow, and demography. in species restricted to montane habitats, ranges may expand and contract along an elevational gradients in response to environmental fluctuations and create high levels of genetic variation among populations on different mountains. the salamander plethodon fourchensis is restricted to high-elevation, mesic forest on five montane isolates i ... | 2009 | 19389165 |