Issues related to the optimal preservation and management of renewable resources are considered. The impact of economic variables on optimal use is also analyzed. Empirical Analysis of Pastoral Migration Decisions: Gabra Herders in Northern Kenya, John McPeak, University of Wisconsin-Madison. Optimal Management of Multi-Value Renewable Resources: An Application to the African Elephant William Sutton and Lovell Jarvis, University of California-Davis. An Analysis of the Economic Efficiency of Thoroughbred Breeder/Owner Incentive Policies J. Shannon Neibergs and Richard Thalheimer. The Dynamics of Reintroducing, Supplementing and Controlling Endangered Predator Populations Daniel Rondeau, Cornell University.