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Keywords:

  • Hypoxia;
  • Hypoxic Volume;
  • Chesapeake Bay;
  • Dead Zone;
  • Water Quality;
  • Dissolved Oxygen

In the 1930s, researchers first noticed that the Chesapeake Bay had a dead zone, an expanse of water with drastically reduced concentrations of oxygen. In the 1980s, hypoxia—low-oxygen conditions—gave way in some places to anoxia—a near-total depletion of dissolved oxygen. A lack of oxygen makes the water inhospitable for many marine organisms, and the Chesapeake Bay is the focus of major ecosystem rehabilitation efforts.