SOLUTIONS PROPOSED FOR GULF OF MEXICO DEAD ZONE A "dead zone" in the Gulf of Mexico, believed to be caused by fertilizer runoff, is expanding and is now the size of New Jersey, according to a report at the recent annual meeting of the American Association for the Advancement of Science. Every spring and summer, nitrogen from agricultural fertilizer washes down the Mississippi River and into the Gulf of Mexico, causing an algal bloom that uses much of the water's oxygen and renders the area so oxygen-deprived that most fish flee to healthier waters and bottom dwellers such as worms and starfish die. Elimination of the dead zone could be helped by reducing use of fertilizers by 20 percent and restoring wetlands in the Mississippi Valley. The Mississippi River drains about 40 percent of the United States and carries more than a million tons of nitrogen, according to the U.S. Geological Survey. Copies of the report, Evaluation of Economic Costs and Benefits of Methods for Reducing Nutrient Loads to the Gulf of Mexico, CENR Report of Topic Six by Otto Doering, et. al., can be requested by e-mail from [log in to unmask] ---------------------------------------------------------------------- To get off the IOWA-TOPICS list, send email to [log in to unmask] Make the message text (not the Subject): SIGNOFF IOWA-TOPICS