Kai Chan, Jordan Tam, and others publish article in PNAS called, “Contributions of cultural services to the ecosystem services agenda”. (pdf)
Daniel, T. C., Muhar, A., Arnberger, A., Aznar, O., Boyd, J. W., Chan, K. M. A., . . . von der Dunk, A. (2012). Contributions of cultural services to the ecosystem services agenda. Proceedings of the National Academy of Sciences. doi: 10.1073/pnas.1114773109
