Impact of climate change on species | WWF

Fast facts about climate change and species

  • Global warming has the potential to cause extinctions in a majority of the world's especially valuable ecosystems.
  • Depending on a species responses to the warming, especially their ability to migrate to new sites, habitat change in many ecoregions has the potential to result in catastrophic species loss.
  • Global warming is likely to have a winnowing effect on ecosystems, filtering out species that are not highly mobile and favouring a less diverse, more "weedy" vegetation and ecosystems that are dominated by pioneer species, invasive species.