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Gulf Hypoxia Action Plan 2008 for Reducing, Mitigating, and Controlling Hypoxia in the Northern Gulf of Mexico and Improving Water Quality in the Mississippi River Basin

机译:2008年墨西哥湾缺氧行动计划,旨在减少,减轻和控制墨西哥湾北部的缺氧状况,提高密西西比河流域的水质

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More than thirty years after the passage of the Clean Water Act, a large area of low oxygen or hypoxia, absent of most marine life and threatening to inexorably change the biology of the region, continues to form in the Gulf of Mexico during periods in the summer off the coasts of Louisiana and Texas. The hypoxia is primarily caused by excess nutrientsoriginating from the great productivity of Middle American cities, farms, and industrieswhich cause extensive growths of algae that deplete the oxygen in the water when they die, sink to the bottom, and decompose. The condition is exacerbated by the stratification of the water columnthe result of warmer, low salinity surface waters that isolate the organic-rich bottom waters from the surface and prevent oxygen exchange with the atmospherewhich occurs where the Mississippi River meets the Gulf of Mexico.

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