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Press Release 11-069

"Epidemiological" Study Demonstrates Climate Change Effects on Forests

Study of 27,000 trees shows early spring warming, summer drought as major factors

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Photo of a magnolia blossom.

Some 280,000 tree-years of data show that magnolias are vulnerable to climate change.

Credit: Smithsonian Institution


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Photo of a forest which was used to study climate change effects.

A panorama shows a part of the 27,000 or more trees studied for climate change effects.

Credit: James Clark


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Photo of trees.

Each tree has something to tell scientists, including insights about early spring warming.

Credit: James Clark


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Photo of pine cones.

Pines--along with elms and beeches--are among the trees affected by climate change.

Credit: USDA


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Photo of a gap in the forest canopy with contours superimposed on the image.

In areas studied, scientists looked at gaps in forest canopies.

Credit: James Clark


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Photo of a researcher tending tree seedlings used in the experimental forest studies.

Researchers raise seedlings for experimental forest studies.

Credit: James Clark


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