1. Department of Geosciences, University of Nevada, Las Vegas, 4505 S Maryland Pkwy, Las Vegas, NV 89154, USA
2. The Nature Conservancy, Tucson, AZ, 85719, USA
3. Department of Geography, University of Tennessee, 1000 Phillip Fulmer Way, Knoxville, TN 37916, USA
4. Department of Forest and Wildlife Ecology, University of Wisconsin, Madison, 1630 Linden Dr., Madison, WI 53706, USA
5. Department of Natural Resources Management and Environmental Sciences, California Polytechnic State University, San Luis Obispo, 1 Grand Ave., San Luis Obispo, CA 93407, USA
6. Department of Geography, Ohio State University, 154 N. Oval Mall, Columbus, OH 43210, USA
7. Department of Earth and Environmental Systems, Indiana State University, 200 North Seventh St., Terre Haute, Indiana, 47809, USA
8. Stevens High School, 4215 Raider Rd., Rapid City, SD 57702, USA
9. Department of Environmental Resource Management, Pennsylvania State University, 201 Old Main, University Park, PA 16802, USA