FOREST ECONOMICS AND INVESTMENTS IN THE TROPICS Valuation Techniques and Investment Decision Model for Private Timber-oriented Even-aged Plantation Forestry Under Monetary Incentive Instruments in Costa Rica. Thesis to be submitted in partial fulfillment of the examination Requirements for the Academic Degree of: Master of Science in Tropical Forestry and Management Faculty of Forest-, Geo- and Hydro- Sciences. Institute of Forest Economics and Management. Institute of International Forestry and Forest Products. Dresden University of Technology Guillermo A. Navarro Supervisor: Dr. Peter Deegen, Institute of Forest Economics and Management. Co-supervisor: Prof. Dr. Jürgen Pretzsch, Institute of International Forestry and Forest Products. October, 1999