Key points are not available for this paper at this time.
Norman L. Christensen is a professor in the Department of Botany, Duke University, Durham, NC 27706. James K. Agee is a professor in the College of Forest Resources, University of Washington, Seattle, WA 98195. Peter F. Brussard is a professor in and the chairman of the Biology Department, University of Nevada, Reno, NV 89557. Jay Hughes is a professor in and dean of the College of Forestry and National Resources, Colorado State University, Fort Collins, CO 80523. Dennis H. Knight is a professor in the Department of Botany, University of Wyoming, Laramie, WY 82071. G. Wayne Minshall is a professor in the Department of Biology, Idaho State University, Pocatello, ID 83209. James M. Peek is a professor in the College of Forest Resources, Wildlife, and Range Science, University of Idaho, Moscow, ID 83843. Stephen J. Pyne is a professor in the Department of History, Arizona State University, West Campus, Phoenix, AZ 85017. Frederick J. Swanson is a senior research scientist in the USDA Forest Ser-
Christensen et al. (Wed,) studied this question.