A review of the socio-economic benefits of protect ecosystems using comprehensive national datasets and quasi-experimental matching methods. The net impact of ecosystem protection was to alleviate poverty in Costa Rica and Thailand.
Andama, K.S., Ferraro, P.J., Sims, K.R.E., Healyd, A. & Hollande, M.B. 2010. Protected areas reduced poverty in Costa Rica and Thailand. PNAS