A simple differential equation system describes the dynamics of a renewable resource coupled by a Cobb-Douglas production function to the capital invested in resource harvesting. This system can model fisheries which operate under open access. Significant resource depletion is shown to follow...

In the past in Africa, state forest administration took nominal control of local forest management from rural populations. This control, based on a European concept of management, gradually deteriorated and the methods of classical forest management are no longer suited to existing conditions....