Mass Change in Tree Species Occurring in Western North America, Study Says

Posted by Washington Post: Juliet Eilperin on November 3rd, 2011
Yale Environment 360: A huge shift in tree species is taking place across the western United States and Canada as global warming, drought, insect infestations, and fire are driving certain species out of some regions and allowing new species to take their place. Using remote sensing data, U.S and Canadian scientists analyzed the condition of 15 coniferous tree species in 34 different “eco-regions.” The study found that once-common tree species, such as lodgepole pine and Engelmann spruce, are being replaced by species......

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