Mali is a Sub-Saharan African country with 19.1 million people. Almost half of this population lives in poverty, due to the dysfunction of activity sectors (agriculture, energy, education, employment, services, etc.). Natural resource management especially land and water together with...

Stochastic dynamic programming is used to investigate optimal holding of primary tropical forest in humid Costa Rica when future nonuse benefits of forest conservation are uncertain and increasing. The quasi-option value of maintaining primary forests is included as a component of investment in...