Selecting appropriate methods of knowledge synthesis to inform biodiversity policy by Pullin, A, Frampton, G, Jongman, R, Kohl, C, Livoreil, B, Lux, A, Pataki, G, Petrokofsky, G, Podhora, A, Saarikoski, H, Santamaria, L, Schindler, S, Sousa-Pinto, I, Vandewalle, M, Wittmer, H