A model for the recovery of an endangered species is developed and applied to the red-cockaded woodpecker (Picoides borealis), a species once abundant in the southeastern United States. There is a finite set of recovery actions that might be implemented in each period, with the goal of reaching...

The use of riparian land buffers to protect water quality for human consumption and wildlife habitat has become an important conservation tool of both government and non-government agencies. The funds available to acquire private lands for riparian buffers are limited, however, and not all land...

An option-value (or stopping-rule) model is developed to determine the optimal timing and expected value of policies (bullets) to slow global warming. The model and policies are calibrated to reflect current estimates or predictions of temperature drift, variance, damage, and the cost of slowing...

Starting in the 1960s, considerable opposition to the Canadian and Norwegian harp seal hunt off Newfoundland developed. It was alleged that the seal hunt was unethical and that the seal population had been seriously depleted. The purpose of this paper is to analyze the production function for...

The concept of coevolution is reviewed and a model is developed in an attempt to make the concept operational. The location, scale, and timing of economic activities in a buffer zone to a park or preserve are related to an index of biodiversity. Coevolution would occur if a trajectory of...

Ecologists and anthropologists have had a long-standing interest in the settlement and evolution of isolated islands, particularly Easter Island. The open access model is often used to describe the evolution of a human population and its resource base. Unfortunately, an open access model, with...