Stewardship programs are an important element of agroecosystems management. These programs are confronted with the difficult challenges of demonstrating their positive impacts on the environment. This paper argues that under the precautionary principle, evaluation of stewardship programs should...

This paper reviews some literatures on the mechanisms available for the poor in managing risk. Lacking access to formal mechanisms of risk management, the poor rely on informal mechanisms, which are built based on the existing social networks and trust. But when the shocks are big or affecting...