concentrated. Biologists and conservation advocates have advanced a number of arguments both that “biodiversity” is imperiled as … services of forest ecosystems will prove sufficient to motivate their conservation on a large scale. Other instruments for … conservation must, then, be employed if areas under intense pressure for conversion are to be preserved. …

species forming a food chain. The size of habitat determines the diversity and abundance of species. That biodiversity …

Given that both the costs and the benefits of biodiversity-enhancing land-use measures are subject to spatial variation … with uniform payments for biodiversity-enhancing land-use measures to be assessed. A simple ecologicaleconomic model is …