Personal anecdotes are used to highlight some important considerations for yield regulation and to introduce some pertinent literature. A checklist of key issues and research needs is offered. Perhaps the most important consideration is to maintain a holistic systems view, and to involve clients and to ensure their needs are met.

The Nile basin experiences wide spread poverty, lack of food and land and water

degradation. Because poverty is linked to access to water for crop, fish and

livestock based livelihoods, improving access to water and increasing agricultural

water productivity can potentially contribute substantially to poverty reduction.

The major goal of the Nile Basin Focal project is to identify high potential

investments that reduce poverty yet reverse trends in land and water

degradation. This is done through the implementation of six interlinked work

In 2002, mahogany (Swietenia macrophylla) was listed on Appendix II of CITES (the Convention on International Trade in Endangered Species). This requires that all producing countries define and implement sustainable production systems for mahogany, the most commercially important neotropical timber, which is still harvested from natural forests. The only serious efforts to produce mahogany sustainably from managed natural forests are those of communities in Quintana Roo, Mexico, which control 800,000 of natural production forests.