of human-accelerated environmental change, and also how (and whether) effective ecosystem management or restoration can reverse these trends. Most of her research is focused on stream and wetland ecosystems within urban and agricultural landscapes. Dr. Bernhardt was the coordinator of the National River Restoration Science Synthesis and served as a member of the Ecological Society of America’s Visions committee. She currently serves on the External Advisory Board for the Southeastern Division of Environmental Defense, the Science Advisory Board of the Center for the Environmental Implications of Nanotechnology, and as a consultant to the Sierra Club, Earth Justice, and the Southern Environmental Law Center on issues related to water quality degradation and river and wetland restoration and mitigation.

William E. Dietrich, NAS, is a professor in the Department of Earth and Planetary Science at the University of California, Berkeley. He also has an appointment in the Department of Geography and the Earth Sciences Division of the Lawrence Berkeley National Laboratory, and is affiliated with the Archeological Research Facility. He is co-founder of the National Center for Airborne Laser Mapping and a member of the National Center for Earth-surface Dynamics. His Berkeley-based research group is focusing on mechanistic, quantitative understanding of the form and evolution of landscapes and the linkages between ecological and geomorphic processes. He has numerous publications and honors, including being named a member of the National Academy of Sciences and a fellow of the American Academy of Arts and Sciences, both in 2003. Dr. Dietrich received his B.A. from Occidental College, and his M.S. and Ph.D. from the University of Washington.

Dara Entekhabi is a professor in the Department of Civil and Environmental Engineering and the Department of Earth, Atmospheric and Planetary Sciences at the Massachusetts Institute of Technology. His research interests are in the basic understanding of coupled surface, subsurface, and atmospheric hydrologic systems that may form the bases for enhanced hydrologic predictability. More specifically, his current research is in land-atmosphere interactions, remote sensing, physical hydrology, operational hydrology, hydrometeorology, groundwater–surface water interaction, and hillslope hydrology. He was founding chair of the WSTB’s Committee on Hydrologic Science, and has served on the WSTB and the Committee to Assess the National Weather Service Advanced Hydrologic Prediction Service Initiative program. He received his B.A. and M.A. degrees from Clark University and his Ph.D. degree in civil engineering from the Massachusetts Institute of Technology.

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