1. Advanced Science Research Center at the Graduate Center, City University of NewYork , New York, NY 10031, USA
2. Institute for Great Lakes Research and Biology Department, Central Michigan University , Mount Pleasant, MI 48858 , USA
3. USDA Forest Service, Northern Research Station, Baltimore Field Station , Baltimore, MD 21228 , USA
4. George Perkins Marsh Institute, Clark University , Worcester, MA 01610 , USA
5. Department of Agricultural and Resource Economics, University of Maryland, College Park , MD 20742 , USA
6. Department of Natural Resources Science, University of Rhode Island , Kingston, RI 02881 , USA
7. Department of Environmental Science, and Engineering Systems and Environment, University of Virginia , Charlottesville, VA 22904 , USA
8. Department of Ecosystem Science and Management, Pennsylvania State University, University Park , PA 16802 , USA
9. School of Integrative Plant Science, Cornell University , Ithaca, NY 14850, USA
10. NOAA National Sea Grant Office , Silver Spring, MD 20910, USA
11. Spatial Analysis Laboratory, University of Vermont , Burlington, VT 05405, USA
12. Center for Environmental Studies, Florida Atlantic University , Davie, FL 33314, USA
13. Department of Horticulture, Iowa State University , Ames, IA 50011 , USA
14. Department of Geography and Sustainable Development, University of Miami , Coral Gables, FL 33146 , USA
15. Faculty of Economic Sciences, University of Warsaw , Warsaw, 00-241 , Poland