Study sees climate change impact on trees

United Press International: Tree growth and fecundity -- the ability to produce viable seeds -- are more sensitive to climate change than previously thought, an 18-year U.S. study found. The study of 27,000 individual trees by National Science Foundation-funded scientists identified earlier spring warming as one of several factors that affect tree reproduction and growth. It also found summer drought was an important risk factor for tree survival, and species in four types of trees -- pine, elm, beech, and magnolia -- are......

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