David G. Zawada Christina A. Kellogg 2009 Coral disease, one of the major causes of reef degradation and coral death, has been increasing worldwide since the 1970s, particularly in the Caribbean. Despite increased scientific study, simple questions about the extent of disease outbreaks and the causative agents remain unanswered. A component of the U.S. Geological Survey Coral Reef Ecosystem STudies (USGS CREST) project is focused on developing and using new methods to approach the complex problem of coral disease. application/pdf 10.3133/fs20093113 en U.S. Geological Survey Applying New Methods to Diagnose Coral Diseases reports