1. R. J. Naiman is director of the Center for Streamside Studies, University of Washington, Seattle, WA 98195, USA.
2. J. J. Magnuson is director of the Center for Limnology, University of Wisconsin, Madison, WI 53711, USA.
3. D. M. McKnight is Research Hydrologist, U.S. Geological Survey, Boulder, CO 80303, USA.
4. J. A. Stanford is director of the Flathead Lake Biological Station, University of Montana, Polson, MT 59860, USA.
5. J. R. Karr is Professor of Environmental Studies, University of Washington, Seattle, WA 98195, USA.