Markets for ecosystem services are being promoted across the developing world, amidst claims that the provision of economic incentives is vital to bring about resource conservation. This article argues that equity and legitimacy are also critical dimensions in the design and implementation of such markets, if social development goals beyond economic gains are to be achieved. The article examines this issue by focusing on two communities involved in a project for carbon sequestration services of forests in the state of Chiapas, Mexico.

Joseph Wright and Helene Muller-Landau suggest that regeneration of tropical forests might lead to far less species loss than is feared by most tropical biologists (12 May, p 42). There is currently very little reason to think so.

Human-dominated marine ecosystems are experiencing accelerating loss of populations and species, with largely unknown consequences. We analyzed local experiments, long-term regional time series, and global fisheries data to test how biodiversity loss affects marine ecosystem services across temporal and spatial scales. Overall, rates of resource collapse increased and recovery potential, stability, and water quality decreased exponentially with declining diversity. Restoration of biodiversity, in contrast, increased productivity fourfold and decreased variability by 21%, on average.

At a 31 October gathering of tsunami donors at the United Nations, the World Conservation Union (IUCN) and the U.N. Development Programme are planning to unveil a 6-year, $62 million initiative called Mangroves for the Future (MFF). It's goal is to rehabilitate ecosystems in 12 tsunami hit nations.

This study quantifies the tangible, economic benefits of a nongovernmental organization's social forestry project to local people and analyzes the potential return from this investment in natural capital. The analysis was conducted in the Kumaun hill region of Uttaranchal, India, using participatory rapid appraisal, household survey, avoided cost method, and present value investment analysis.