TCN: Soggy Midwest spring leads to sizable 2019 Gulf of Mexico ‘dead zone’

A report from researchers at Louisiana State University predicts an annual hypoxic or “dead” zone in the Gulf of Mexico covering 8,717 square miles this summer, the second largest since monitoring of the phenomenon began in 1985.

Scientists define hypoxia as a decrease in the concentration of dissolved oxygen in the water column to a level that no longer supports living aquatic organisms. For the northern Gulf of Mexico, that level is less than 2 milligrams of oxygen per liter of water.

 

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