Santiago Izquierdo Tort is Associate Researcher (akin to Associate Professor) at Universidad Nacional Autónoma de México's (UNAM) Institute for Economics Research. His research is anchored in three main themes: i) the theory and practice of market or incentive-based environmental policies, such as Payments for Ecosystem Services (PES) programs; ii) the economics and political economy of climate and biodiversity frameworks; and iii) the collective dimensions of natural resource management, particularly in Latin America.