Coral health index (CHI) : measuring coral community health
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.