1. Conservation International, Science + Knowledge Division; 2011 Crystal Dr., Ste. 500 Arlington VA 22202
2. Dep. of Biological Systems Engineering, ESAREC; Virginia Polytechnic Institute and State Univ.; Painter VA 23420
3. Charles H. Dyson School of Applied Economics and Management, Warren Hall, Cornell Univ.; Ithaca NY 14853
4. Dep. of Biological and Environmental Engineering; Riley-Robb Hall, Cornell Univ.; Ithaca NY 14853