The worst drought to hit the United States in at least 50 years does have one benefit: it has created the smallest "dead zone" in the Gulf of Mexico in years, says a Texas A&M University researcher who has just returned from gulf waters.
Oceanography professor Steve DiMarco, one of the world's leading authorities on the dead zone, says he and other Texas A&M researchers and graduate students analyzed the Gulf Aug. 15-21 and covered more than 1,200 miles of cruise track, from Texas to Louisiana. The team found no hypoxia off the Texas coast while only finding hypoxia near the Mississippi River delta on the Louisiana coast.
"We had to really hunt to find any hypoxia at all and Texas had none," he explains.
"The most severe hypoxia levels were found near Terrabonne Bay and Barataria Bay off the coast of southeast Louisiana.
"In all, we found about 1,580 square miles of hypoxia compared to about 3,400 square miles in August 2011. What has happened is that the drought has caused very little fresh-water runoff and nutrient load into the Gulf, and that means a smaller region for marine life to be impacted."