USA NPN National Phenology Network

Taking the Pulse of Our Planet

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RECENT CHANGES IN PHENOLOGY ACROSS THE UNITED STATES

New USA National Phenology Network information sheets synthesize recent changes in climate and phenology in eight U.S. regions. Find out what changes have been observed in salamanders in the Southeast, caribou in Alaska, ragweed in the Great Plains and more.

Date: 
03/15/2013