The oxygen-depleted dead zone that forms each summer in the Gulf of Mexico has reached 5,840 square miles in size, according to NOAA-supported scientists. The 2013 dead zone is about twice as large as the one that formed in 2012. The larger size of the dead zone in 2013 is partly due to wet spring conditions in the Mississippi watershed, which have increased the amount of nutrient runoff in contrast to last year, when drought gripped much of the region.
Posted on: Wed, 14 Aug 2013 07:39:03 +0000
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