1. Equilibrium Research 47, The Quays, Cumberland Road, Bristol BS1 6UQ U.K.
2. Leibniz Centre for Agricultural Landscape Research (ZALF) 84, Eberswalder Street, Müncheberg 15374 Germany
3. WWF 18, Reinhardt Street, Berlin 10117 Germany
4. Fundación Vida Silvestre Argentina Defensa 251 6K, Buenos Aires 1065 Argentina
5. WWF Brazil CLS 114 Bloco D ‐ Asa Sul, Brasília 70377‐540 Brazil