1. NORDECO, Skindergade 23, Copenhagen DK-1159, Denmark.
2. Geographic Resource Analysis and Science, University of Copenhagen, Øster Voldgade 10, Copenhagen, Denmark.
3. M. S. Swaminathan Research Foundation, 3rd Cross Street, Taramani, Chennai 600 113, India.
4. Global Environment Centre, 2nd Floor, Wisma Hing, 78, Jalan SS2/72, 47300 Petaling Jaya, Selangor, Malaysia.
5. Conservation Biology Group, Department of Zoology, University of Cambridge, Cambridge, UK.