Pissarra, T.C.T., Costa, R.C.A., Caldas, A.M., Rodrigues, F.M., Fernandes, L.F.S. and Pacheco, F.A.L. 2022. Methodological proposal for Payments for Environmental Services (PES) aiming to produce clean water in springs. Ciência e Natura. 44, (Apr. 2022), e23. DOI:https://doi.org/10.5902/2179460X69453.