1. Department of Zoology; George S. Wise Faculty of Life Sciences; Tel Aviv University; Tel Aviv 69978 Israel
2. Department of Forestry and Fisheries & Wildlife; Michigan State University; 480 Wilson Road East Lansing MI 48824 USA
3. School of Forestry and Environmental Studies; Yale University; 195 Prospect Street New Haven CT 06511 USA
4. Department of Ecology and Evolutionary Biology; Yale University; 165 Prospect Street New Haven CT 06520 USA
5. Biosciences; College of Life & Environmental Sciences; University of Exeter; Geoffrey Pope Building Exeter EX4 4QD UK
6. Bryn Mawr; Bryn Mawr College; 101 North Merion Avenue PA 19010 USA
7. Department of Environmental Science and Management; Portland State University; Portland OR 97201 USA
8. Graduate Group in Ecology and Department of Anthropology; University of California; One Shields Avenue Davis CA 95616 USA