Aquatic dead zones can be caused naturally but more often than not they are the result of humans polluting the waterways. They have long been the concern of scientists and environmental activists because of the loss of aquatic life. They are difficult to rehabilitate and are often exacerbated by storms that cause runoff of pollutants from the land into the water. As oxygen levels in the water decrease production of nitrous oxide increases. Nitrous oxide is 300 times more potent as a greenhouse gas than carbon dioxide.

It turns out that most of the research done on aquatic dead zones focuses on loss of plant life and the immediate environmental impacts including water safety and beach pollution. There’s not a lot of research done on the rise of nitrous oxide in hypoxic waters and Dr. Codispoti warns that, “we should intensify our observations of the relationship between low oxygen concentrations and nitrous oxide in coastal waters.” As aquatic dead zones around the world intensify on a daily basis the increase in nitrous oxide production could be deadly to the atmosphere.

+ Center for Environmental Science at the University of Maryland

+ Information on Aquatic Dead Zones

Via Science Daily

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