Climatic Change

, Volume 117, Issue 1–2, pp 319–327 | Cite as

Predicting the impacts of climate change on genetic diversity in an endangered lizard species

Article

Abstract

Many endangered species persist as a series of isolated populations, with some populations more genetically diverse than others. If climate change disproportionately threatens the most diverse populations, the species’ ability to adapt (and hence its long-term viability) may be affected more severely than would be apparent by its numerical reduction. In the present study, we combine genetic data with modelling of species distributions under climate change to document this situation in an endangered lizard (Eulamprus leuraensis) from montane southeastern Australia. The species is known from only about 40 isolated swamps. Genetic diversity of lizard populations is greater in some sites than others, presumably reflecting consistently high habitat suitability over evolutionary time. Species distribution modelling suggests that the most genetically diverse populations are the ones most at risk from climate change, so that global warming will erode the species’ genetic variability faster than it curtails the species’ geographic distribution.

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Department of Ecology and Evolution, Biophore BldUniversity of LausanneLausanneSwitzerland
  2. 2.School of Biological Sciences A08University of SydneySydneyAustralia
  3. 3.School of Marine and Tropical BiologyJames Cook UniversityTownsvilleAustralia

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