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Video: Water quality testing determines healthy ecosystems

Hundreds of beautiful streams course down the slopes of the Appalachian Mountains, but knowing if they are healthy ecosystems requires going under the surface. Tony Timpano, a research associate for the Virginia Water Resources Research Center, uses a variety of tests to examine the ability of a stream to support aquatic wildlife. He also teaches research skills to undergraduate students. The results of his research can aid federal agencies in determining the effects of coal mining on stream ecosystems and in mitigating its impact.