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sexta-feira, 7 de outubro de 2011

Science DOI: 10.1126/science.1210173
  • Report

The Influence of Late Quaternary Climate-Change Velocity on Species Endemism

  1. B. Sandel1,2,
  2. L. Arge2,
  3. B. Dalsgaard3,
  4. R.G. Davies4,
  5. K. J. Gaston5,
  6. W. J. Sutherland3,
  7. J.-C. Svenning1
+ Author Affiliations
  1. 1Aarhus University, Department of Bioscience, Ecoinformatics and Biodiversity Group
  2. 2Aarhus University, Department of Computer Science, Center for Massive Data Algorithmics (MADALGO)
  3. 3University of Cambridge, Department of Zoology, Conservation Science Group
  4. 4University of East Anglia, School of Biological Sciences
  5. 5University of Exeter, Environment and Sustainability Institute

Abstract

The effects of climate change on biodiversity should depend in part on climate displacement rate (climate-change velocity) and its interaction with species' capacity to migrate. We estimated Late Quaternary glacial-interglacial climate-change velocity by integrating macroclimatic shifts since the Last Glacial Maximum with topoclimatic gradients. Globally, areas with high velocities were associated with marked absences of small-ranged amphibians, mammals and birds. The association between endemism and velocity was weakest in the highly vagile birds and strongest in the weakly dispersing amphibians, linking dispersal ability to extinction risk due to climate change. High velocity was also associated with low endemism at regional scales, especially in wet and aseasonal regions. Overall, we show that low-velocity areas are essential refuges for Earth's many small-ranged species.

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