effects of fishing on fish populations, ecological risk assessment, and natural resource management. He received his B.A. in biology from Stanford University and his M.S. and Ph.D. degrees in biology from the University of Oregon.

ELLEN A. DE GUZMAN is a research associate with the National Research Council’s Water Science and Technology Board. She has worked on a number of studies including Privatization of Water Services in the United States, Review of the USGS National Water Quality Assessment Program, and Drinking Water Contaminants (Phase II). She co-edits the WSTB newsletter and annual report and manages the WSTB homepage. She received her B.A. degree from the University of the Philippines.

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