Thomas Kaye, directeur, Institute of Applied Ecology, P.O. Box 758, Philomath, Oregon.
Andrea Pickart, écologiste spécialiste des dunes de Californie, Humboldt Bay National Wildlife Refuge, Lanphere Dunes Unit, 6800 Lanphere Road, Arcata, Californie.
Keith Karoly, Biology Department, Reed College, Portland, Oregon 97202-8199
USA Institute for Applied Ecology, Philomath, Oregon 97370.
