1. Dep. of Environmental Science; Univ. of San Francisco; 2130 Fulton St. San Francisco CA 94117
2. U.S. Geological Survey; Patuxent Wildlife Research Center; 10300 Baltimore Ave. Beltsville MD 20705
3. National Park Service, Northeast Coastal and Barrier Network; 4598 MacArthur Blvd. NW Washington DC 20007