What is hypoxia?
Hypoxia, or low oxygen, is an environmental phenomenon where the concentration of dissolved oxygen in the water column decreases to a level that can no longer support living aquatic organisms. Hypoxic areas, or “Dead Zones,” have increased in duration and frequency across our planet’s oceans since first being noted in the 1970s.
The largest hypoxic zone currently affecting the United States, and the second largest hypoxic zone worldwide, is the northern Gulf of Mexico adjacent to the Mississippi River.
Gulf hypoxia in the news:
By Doyle Rice / USA Today March 26, 2018 The annual “dead zone” in the Gulf of Mexico, which last year was the size of New Jersey, will continue for several decades, a new study said. A [...]
By JANET McCONNAUGHEY/ AP Mar. 22, 2018 NEW ORLEANS (AP) — The Gulf of Mexico’s “dead zone” will be an unwanted summer visitor for decades, Canadian scientists say. They say the oxygen-starved patch would persist [...]
GULF OF MEXICO RESEARCH INITIATIVE MARCH 20, 2018 Researchers analyzed dissolved organic carbon from water column samples collected in five regions to establish baseline data about its relative persistence and cycling in the northern Gulf [...]
By Stacey Plaisance and Kevin McGill / AP News March 8, 2018 NORCO, La. (AP) — The U.S. Army Corps of Engineers began opening part of a 1930s flood control structure northwest of New Orleans [...]