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Posted Thu Apr 21 2011: from EnvironmentalResearchWeb:
"Epidemiological" study demonstrates climate-change effects on forests
An 18-year study of 27,000 individual trees by National Science Foundation (NSF)-funded scientists finds that tree growth and fecundity - the ability to produce viable seeds - are more sensitive to climate change than previously thought. The results, published tomorrow in the journal Global Change Biology, identify earlier spring warming as one of several factors that affect tree reproduction and growth. They also show summer drought as an important but overlooked risk factor for tree survival, and that species in four types of trees - pine, elm, beech, and magnolia - are especially vulnerable to climate change.... "The problem is, the models scientists have used to predict forest responses focus almost solely on spatial variation in tree species abundance - their distribution and density over geographic range."... "Trees are much more sensitive to climate variation than can be interpreted from regional climate averages."
[Read more stories about: climate impacts, faster than expected, forests]

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'Doc Jim says:
This is a classic case of judging the forest by its trees.

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