Tschirky, John

Scientists used a network of interdisciplinary studies to investigate the ecological effects of marine managed areas (MMAs) dispersed widely across the tropics. The results indicate that rigorously enforced MMAs can be an effective management tool to reduce overuse of natural resources and conflicts among different uses of the ocean. In addition, MMAs can provide important data for adaptive management of marine resources. This four-page policy brief draws from the "Living with the Sea" report.

Effective local management of coral reefs has a direct effect on reducing threats and improving overall coral community health. Careful zoning and effective enforcement of resource use within a marine managed area reduces impacts of overfishing, allowing populations of grazing fish to rejuvenate and maintain healthy ecosystem functioning. Coastal land management to reduce deforestation and land-based pollution, and planning for sustainable coastal development can ensure that nutrient and sediment loads to the reef environment are kept low, maintaining a vibrant coral reef community.