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'Epidemiological' tree study shows impacts of climate change on forests
Date:4/4/2011

phic range," Clark said.

If all trees of a species grew in the same conditions the same light, moisture, soil and competition for resources this generalized, species-wide spatial analysis might suffice. Scientists wouldn't need to worry about demographic variables and risk factors when trying to predict biodiversity losses due to climate change. "But in the real world, we do," Clark said. "That's where this new concept of climate and resource tracking of demographic rates comes in."

Trees are much more sensitive to climate variation than can be interpreted from regional climate averages. "By quantifying the effects and relative importance of competition and climate variables, including previously overlooked impacts on fecundity, over both time and space, the model we've developed addresses this need," he said, "and can be used to help guide planning."

The trees studied included 40 different species, located in 11 different forest stands in three geographic regions of the Southeast the southern Appalachians, the Piedmont and coastal plain. They were subjected to both natural and experimental variations.


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Contact: Tim Lucas
tdlucas@duke.edu
919-613-8084
Duke University
Source:Eurekalert

Page: 1 2

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