2019 Shelfwide Cruise

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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.

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Gulf hypoxia in the news:

807, 2019

Tropical disturbance eyes Gulf, south Louisiana: Major rainfall possible, experts say

July 8th, 2019|Comments Off on Tropical disturbance eyes Gulf, south Louisiana: Major rainfall possible, experts say

Mark Schleifstein / The Times Picayune 8 July 2019 National Hurricane Center forecasters believe a tropical depression or storm is very likely to form later this week in the Gulf of Mexico, but they're hedging their [...]

2506, 2019

Louisiana Inshore Shrimp Season to Close June 28 in State Inside Waters

June 25th, 2019|Comments Off on Louisiana Inshore Shrimp Season to Close June 28 in State Inside Waters

Trey Iles / Louisiana Department of Wildlife and Fisheries June 25, 2019 The Louisiana Department of Wildlife and Fisheries (LDWF) announced the 2019 spring inshore shrimp season will close at 6 p.m. on Friday (June [...]

2406, 2019

State Health Department warns about possible toxic algae bloom developing in Lake Pontchartrain

June 24th, 2019|Comments Off on State Health Department warns about possible toxic algae bloom developing in Lake Pontchartrain

Christina Watkins / BRProud.com 24 June 2019 The Louisiana Department of Health issued an advisory Friday for a potentially large algal bloom developing in Lake Pontchartrain. The department is advising people to avoid contact, including [...]

1806, 2019

Wet spring linked to forecast for big Gulf of Mexico ‘dead zone’ this summer

June 18th, 2019|Comments Off on Wet spring linked to forecast for big Gulf of Mexico ‘dead zone’ this summer

Rebecca Lindsey / Climate.gov 18 June 2019 The extremely wet 2019 spring that brought terrible flooding to large parts of the Missouri and Mississippi River watersheds has also set the stage for a very large ‘dead zone’ [...]