1. Department of Economics and Howard H. Baker Jr. Center for Public Policy University of Tennessee Knoxville Tennessee USA
2. Department of Ecology and Evolutionary Biology University of Tennessee Knoxville Tennessee USA
3. Department of Mathematics and Statistics Williams College Williamstown Massachusetts USA
4. Department of Mathematics Loyola Marymount University Los Angeles California USA
5. Department of Applied Economics Oregon State University Corvallis Oregon USA
6. Department of Mathematics University of Tennessee Knoxville Tennessee USA
7. Woods Hole Oceanographic Institution Woods Hole Massachusetts USA
8. Department of Environmental Science and Policy University of California, Davis Davis California USA
9. Department of Biology Pennsylvania State University State College Pennsylvania USA