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U.S. Forest Service and Oak Ridge National Laboratory scientists have found that rising levels of ozone may amplify the impacts of higher temperatures and reduce streamflow from forests to rivers, streams and other water bodies. Such effects could potentially reduce water supplies available to support forest ecosystems and people in the southeastern United States. Using data on atmospheric water supply and demand and statistical models, researchers with the Forest Service and ORNL were able to show what effects ozone, categorized as a greenhouse gas, can have on stream flow in dry seasons. The study was published in the November issue of the journal Global Change Biology.
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