1. Ecologist, USDA–Agricultural Research Service, 67826-A Highway 205, Burns, OR 97720, US.
2. Rangeland Management Specialist, Bureau of Land Management, 3900 E. Idaho Street Elko, NV 89801, US.
3. Professor, Department of Plant and Wildlife Sciences, Brigham Young Univ., 275 WIDB, Provo, UT 84602, US.
4. Director of Technology and Business Development, Aquatrols Corporation of America, 1273 Imperial Way, Paulsboro, NJ 08066, US.