1. Department of Biology; University of Washington; Box 351800 Seattle WA 98195 U.S.A.
2. Department of Biological Science; North Carolina State University; Box 7617 Raleigh NC 27695 U.S.A.
3. Department of Biology; Duke University; 125 Science Drive Durham NC 27708 U.S.A.
4. Yale University, School of Forestry and Environmental Studies; 370 Prospect Street New Haven CT 06511 U.S.A.
5. USGS Patuxent Wildlife Research Center; SO Conte Anadromous Fish Research Lab; 1 Migratory Way Turner Falls MA 01376 U.S.A.
6. Signal Innovations Group, Inc; 4721 Emperor Boulevard, Suite 330 Durham NC 27703 U.S.A.
7. Institute for Wildlife Studies; P.O. Box 1104 Arcata CA 95518 U.S.A.
8. Department of Geography, Box 3220; University of North Carolina at Chapel Hill; Chapel Hill NC 27599 U.S.A.
9. Department of Biological Sciences; Virginia Tech; 1405 Perry Street, Box 0406 Blacksburg VA 24061 U.S.A.