http://www.noaanews.noaa.gov/stories2007/s2898.htm

"The team of scientists that worked on this assessment concluded that most of the problems in the estuaries are related to human activities," said lead report author Suzanne Bricker, Ph.D., of NOAA's Center for Coastal Monitoring and Assessment. "These impacts are occurring in a watershed that currently supports 53 percent of the nation's population, and excluding Alaska accounts for only 17 percent of the nation's land mass. The scientists' assessment is that the ecological health of our coastal waters is seriously threatened by nutrient pollution. We need to comprehensively address the influx of excess nutrients from upland watersheds to protect our nation’s estuaries."