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Posted Wed Aug 26 2009: from University of Oklahoma, via EurekAlert:
Global warming threatens tropical species, the ecosystem and its by-products http://apocadocs.com/s.pl?1251290904
Tropical lizards detect the effects of global warming in a climate where the smallest change makes a big difference, according to herpetologist Laurie Vitt.... Climate change caused by global warming threatens the very existence of these and other tropical species, the ecosystem and its by-products, Vitt maintains.... Tropical species are affected more by the very narrow temperature range of their typically warm climate than are ectotherms living where the temperatures fluctuate in greater degrees. Even the smallest change in the tropics makes a difference to the tropical species most susceptible to climate change. "Climatic shifts are part of our natural history, but years of research indicate global warming has increased the rate at which climate change is taking place, " Vitt states.
[Read more stories about: ecosystem interrelationships, weather extremes, tipping point]

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