Declines of the California Red-legged Frog : Climate , Uv-b , Habitat , and Pesticides Hypotheses

  title={Declines of the California Red-legged Frog : Climate , Uv-b , Habitat , and Pesticides Hypotheses},
  author={Carlos Davidson and Howard Bradley Shaffer and Mark R Jennings},
The federally threatened California red-legged frog (Rana aurora draytonii) has disappeared from much of its range for unknown reasons. We mapped 237 historic locations for the species and determined their current population status. Using a geographic information system (GIS), we determined latitude, elevation, and land use attributes for all sites and analyzed the spatial pattern of declines. We then compared the observed patterns of decline to those predicted by the climate change, UV-B… CONTINUE READING


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