USGS Report Summarizes Threats to Coral Ecosystems

Coral ecosystems are being imperiled at regional to global scales by over fishing, climate change, disease, and exposure to excess sediments, nutrients and contaminants. Scientists believe that recent changes in reef systems world?wide are unprecedented, according to a report released on July 30 by the U.S. Geological Survey (USGS) that summarizes these threats and outlines important research actions needed over the next five years to more accurately forecast future conditions and to better understand and manage change.

"Coral ecosystems contribute an estimated $30 billion to the global economy, but they are being transformed rapidly by a combination of local, regional, and global stressors," said Gary Brewer, USGS Eastern Region ocean science coordinator. "The USGS has developed a robust research plan that addresses the threats that coral ecosystems are facing," Brewer said.

Coral ecosystems include not only reefs but also interdependent sea grass and mangrove habitats. They are geological and biological complexes composed of hundreds to thousands of interacting species. The essential goods and services they provide include sources of food, essential habitat for fisheries and protected species, biodiversity, protection of coastlines from wave damage and erosion, recreation, and cultural values for island nations and communities.

"This plan is targeted for a wide audience of researchers and decision makers," Brewer said. "It is inclusive of a broad range of current and potential partners with scientific research and resource management expertise."

For more information on the report, "Strategic Science for Coral Ecosystems 2007-2011," visit

This article originally appeared in the 07/01/2007 issue of Environmental Protection.

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