Understanding that the environment is more than the resource base of human economic activities was a watershed in the awareness of the real value of the environment and the need for an assessment of its quality. The complex of benefits from ecosystems that people obtain in the literature became...

The payment for ecosystem services (PES) emerges as part of an arsenal of tools for innovative domestic financing for otherwise absent markets relating to natural resource management. Its traditional framework aspects of conditionality, voluntary transaction, at least one buyer and seller, and...