Payments for ecosystem services (PES) programs are now high in number, if not always in impact. When groups of users pay groups of service providers, establishing PES involves collective action. We study the creation of collective PES institutions, and their continuation, as group coordination. We use framed lab-in-field experiments with hydroservices users and providers within watersheds participating in Mexico's Matching Funds program in Veracruz, Yucatan and Quintana Roo states.

In S. Lele, S. Brondizio, J. Byrne, G. Mace, J. Martinez-Alier (Eds.), Rethinking environmentalism: linking justice, sustainability and diversity. Cambridge, MA: MIT Press. pp.251-286.

Empirical assessment of relationships between land use and land cover (LULC) and drinking water chemical treatment cost is lacking in developing countries. This study is conducted to assess the impact of forest and non-forest land cover on water purification chemical costs using panel data collected from eight drinking water treatment plants in Ethiopia for the period of 2002-2014. Forest cover and LULC data were extracted from Global Forest Change and GlobeLand30 datasets, respectively.