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Map of measured Gulf hypoxia zone, July 21–26, 2024. Red area denotes 2 mg/L of oxygen or lower, the level which is considered hypoxic, at the bottom of the seafloor.
Tropical weather stirred up the Gulf of Mexico, reducing this year’s dead zone off Louisiana’s coast to the third-smallest ever measured, the scientist who has measured it since 1985 said Tuesday.
In fall months, tropical storms begin to enter the Gulf of Mexico and break up the dead zones, and the cycle repeats again in the spring. Aquatic and marine dead zones can be caused by an increase in nutrients (particularly nitrogen and phosphorus) in the water, known as eutrophication. These nutrients are the fundamental building blocks of ...
Scientists prepare to collect near-bottom water aboard the R/V Pelican to verify oxygen measurements used to determine the size of the Gulf of Mexico hypoxic zone. (NOAA/LUMCON/LSU) A "dead zone ...
Red circles show the location and size of many dead zones (in 2008). Black dots show dead zones of unknown size. The size and number of marine dead zones—areas where the deep water is so low in dissolved oxygen that sea creatures cannot survive (except for some specialized bacteria)—have grown in the past half-century. [19]
Nancy Rabalais was born in Wichita Falls, Texas, the second of four children of Kathryn Charlotte Preusch and Stephen Anthony Nash, a mechanical engineer. [2] Rabalais earned her B.S. in 1972 and her M.S. in 1975 from Texas A&M University–Kingsville.
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The stated goal of the program is to reduce polluted runoff to coastal waters. The six main runoff sources are agriculture, forestry, urban areas, wetlands, modified shorelines and stream channels, and vegetative and other treatment systems. This program was established in 1990 by Section 6217 of the Coastal Zone Act Reauthorization Amendments. [2]