1. Geography, Geology, and the Environment Illinois State University Normal Illinois USA
2. Institute for Research in the Social Sciences Colorado State University Fort Collins Colorado USA
3. Department of Biological Sciences Dartmouth College Hanover New Hampshire USA
4. Department of Biological Sciences Virginia Polytechnic Institute and State University Blacksburg Virginia USA
5. Institute for Research in the Social Sciences, Colorado State University Fort Collins Colorado USA
6. Environmental Studies and Policy University of California, Davis Davis California USA
7. Department of Biology Miami University Oxford Ohio USA