1. Department of Biology University of Miami Coral Gables FL USA
2. Department of Biology Illinois College Jacksonville IL USA
3. Department of Mathematics University of Miami Coral Gables FL USA
4. School of Mathematics University of Minnesota Minneapolis MN USA
5. Center for Partial Differential Equations East China Normal University Putuo Qu Shanghai Shi China
6. Wetland and Aquatic Research Center U.S. Geological Survey Gainesville FL USA