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Archive for October 14th, 2011
Ecosystems can change at ‘tipping point’
Posted by Washington Post: Juliet Eilperin on October 14th, 2011
United Press International: Tropical ecosystems have two basic varieties, forest or grassland, but can switch abruptly between the two with little middle ground, European scientists say.
Researchers say the "tipping point" phenomenon means many of the ecosystems are particularly vulnerable to future changes such as rising temperature or other climatic variations, NewScientist.com reported Thursday.
With only slight shifts in rainfall or other factors, for example, people living in a grassland might suddenly find themselves...
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