Peter Murdoch is the research hydrologist for the Watershed Research Group of the US Geological Survey. Since 1982, he has led research on the effects of acid rain and climate change on ecosystems. In the mid-1990s, while serving on the White House Committee on Environmental and Natural Resources, he coauthored a framework for integrating federal environmental monitoring programs to support ecosystem management. He currently directs the Department of the Interior’s National Climate Effects Network, a collaborative multiscale program for assessing ecosystem health under climate change, supporting adaptation or mitigation strategies, and monitoring the effectiveness of those strategies over time.