Reefs at risk : a map-based indicator of threats to the world’s coral reefs

Abstract

This global, map-based analysis evaluates human pressure on coral reefs worldwide and provides information and tools to better manage coastal habitats. Key Findings: - Coral reefs of Southeast Asia, the most species-rich on earth, are the most threatened of any region. More than 80 percent are at risk, primarily from coastal development and fishing- related pressures. - Most United States reefs are threatened. Almost all the reefs off the Florida coast are at risk from a range of factors, including runoff of fertilizers and pollutants from farms and coastal development. Close to half of Hawaii's reefs are threatened, while virtually all of Puerto Rico's reefs are at risk. - Nearly two-thirds of Caribbean reefs are in jeopardy. Most of the reefs on the Antilles chain, including the islands of Jamaica, Barbados, Dominica and other vacation favorites, are at high risk. Reefs off Jamaica, for example, have been ravaged as a result of overfishing and pollution. Many resemble graveyards, algae-covered and depleted of fish. Note: This analysis was updated. Please see Reefs at Risk Revisited (2011) for the most recent data.