To the list of threats to tropical rain forests you can add a new one — trees. It might seem that for a rain forest the more trees the merrier, but a new study by scientists at the Carnegie Institution warns that non-native trees invading a rain forest can change its basic ecological structure — rendering it less hospitable to the myriad plant and animal species that depend on its resources. The research team used innovative remote sensing technology on aircraft to survey the impact. (source: ciw.edu)
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