Global warming alters US wildlife

"The message is that human-driven climate change has affected species all across the United States, from new tropical species arriving in Florida to changes in the basic functioning of ecosystems in Alaska," says Parmesan.
The greater the rate of climate warming, the smaller the number of species that will be able to adapt without disrupting their lifestyles or ecosystems. Climate experts point out that some parts of Alaska warmed by 4°C during the twentieth century, compared with a global average of around 0.6°C. And they fear that warming could accelerate if greenhouse-gas emissions are remain unchecked."With warming for the next century projected to be two to ten times greater than the last, we're heading towards a fundamental and potentially irreversible disruption of the US landscape and wildlife," warns Eileen Claussen, president of the Pew Center.