This work was supported by a grant from the John D. and Catherine T. MacArthur Foundation to the Cambridge Conservation Forum via the University of Cambridge. The member organizations of the Cambridge Conservation Forum (see http://www.cambridgeconservationforum.org.uk) generously supported the participation of many of their staff members in the working groups, workshops and discussion events of this project. Members of the Conservation Measures Partnership and the IUCN Programme Evaluation Group provided helpful input. Earthwatch and the BAT Biodiversity Partnership also helped with testing and refining the evaluation tool. The University of Cambridge Department of Zoology and UNEP-WCMC were especially helpful in accommodating project staff and many project meetings. We are grateful to the following individuals, who participated in the project's working groups and discussions and in testing the evaluation tool: W. Adams, M. Aminu-Kano, M. Ausden, E. Ball, S. Barnard, A. Bowley, E. Bowen-Jones, R. Brett, M. Brooke, P. Brotherton, P. Buckley, N. Bystriakova, D. Coomes, B. Cooper, B. Dickson, J. Doberski, E. van Ek, J. Ekstrom, L. Evans, D. Gibbons, M. Green, R. Green, A. Grigg, D. Hawkins, M. Harris, P. Herkenrath, A. Hipkiss, G. Hirons, R. Hossain, F. Hughes, J. Hughes, J. Hutton, C. Ituarte, D. Kingma, P. Laird, A. Lanjouw, P. Lee, C. Magin, T. Milliken, R. Mitchell, D. Noble, S. O'Connor, T. Oldfield, K. O'Regan, E. Papworth, A. Rodrigues, R. Sinegar, P. Stromberg, W. Sutherland, D. Thomas, R. Trevelyan, G. Tucker, S. Wells, J. Williams and M. Wright. We thank two anonymous referees for helpful comments on an earlier draft of this article.
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