Far more wild plant species may be responding to global warming than previous large-scale estimates have suggested. It follows a detailed NCEAS working group study, released in Proceedings of the National Academy of Sciences. The study shows that many plant species, which appear to not be affected by warmer spring temperatures, are in fact responding as much to warmer winters.
Benjamin I. Cook, Elizabeth M. Wolkovich, and Camille Parmesan
Proceedings of the National Academy of Sciences, May 21, 2012 (online)
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