Coral reefs

Coral reefs are vital ecosystems, providing a source of income, food and coastal protection for millions of people. Pollution, habitat destruction, disease and unsustainable fishing have led to declines in reef condition throughout the world. Added to this, the threat of mass coral bleaching has recently emerged, causing extensive coral mortality to nearly every coral reef region.

Vast changes in the seas are destroying the world’s precious coral reefs at an unprecedented rate and scale. Burgeoning populations, destructive fishing practices, coastal development, sedimentation from forest clearing and unsound agricultural practices, expanding tourism, and increasing pollution are the primary agents of human impact.

The Indian Ocean tsunami of 2004 and the catastrophic hurricane season in the Gulf of Mexico in 2005 have had tragic and devastating consequences for the global community and have drawn attention to the vulnerability of tropical coastal ecosystems. The lessons learnt from these events are critically relevant to future management of the coast. More than ever it is essential to consider the full value of ‘ecosystem services’ when making decisions about coastal development.

The tsunamis of Sunday 26 December 2004 struck without apparent warning on a clear day. Not only was there a devastating loss of life, but coastal resources and infrastructure in the Indian Ocean suffered massive destruction as well. This book focuses on the impacts on the natural coastal resources, especially the coral reefs and associated ecosystems, and the responses by the international community.

Since the 1998 coral bleaching and mortality, which affected reefs throughout the tropics, a number of projects dealing with research, monitoring and management of coral reefs have been conducted. A number of these projects have been carried out under the CORDIO Program in the Indian Ocean where coral reefs have been severely impacted by bleaching related mortality and other anthropogenic influences.

This report was written to provide an overview, without the use of scientific jargon, of the status of coral reefs and causes of reef decline, with recommendations for action by national authorities. This second edition is a major expansion and improvement on the first edition written in 1998.

27% of the world's coral reefs have been lost and 14% are predicted to be destroyed in the next 10 to 20 years. These are the predictions of the world's most authoritative document on the health of reef systems. Released by the Global Coral Reef Monitoring Network (GCRMN), a consortium of major reef monitoring groups in the world, in partnership with IUCN - The World Conservation Union and others, the new report reveals an erratic pattern of damage and recovery worldwide.