A methodological approach for assessing cross-site landscape change: Understanding socio-ecological systems por Sunderland, T, Abdoulaye, R, Ahammad, R, Asaha, S, Baudron, F, Deakin, E, Duriaux, J, Eddy, I, Foli, S, Gumbo, D, Khatun, K, Kondwani, M, Kshatriya, M, Leonald, L, Rowland, D, Stacey, N, Tomscha, S, Yang, K, Gergel, S, Van Vianen, J