15 Jun 2011:
Largest Gulf ‘Dead Zone’
Anticipated in Wake of Spring Floods
The Gulf of Mexico’s hypoxic zone, an oxygen-depleted area created by excessive nutrient pollution, is expected to reach record proportions this year
as a result of the extreme flooding in the Mississippi
River basin, according to a forecast by the National Oceanic and Atmospheric Administration (NOAA). Using nutrient load data compiled by the U.S. Geological Survey, scientists calculate that the hypoxic zone, also known as the “dead zone,” could cover 8,500 to 9,421 square miles, an area about the size of New Hampshire. The dead zone — which is created when algal blooms remove oxygen from the water and suffocate marine life — has reached an average 6,000 square miles during the last five years. But with the flow rate of the Mississippi and Atchafalaya Rivers nearly double the normal rate this spring, the quantity of nutrients entering the Gulf is about 35 percent higher than usual, according to NOAA. The dead zone, located along the coast, forces Gulf fishermen farther offshore.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
Photographer Robert Wintner documents the exquisite beauty and biodiversity of Cuba’s coral reefs, which are largely intact thanks to stifled coastal development in the communist nation. View the gallery.
is now available for mobile devices at e360.yale.edu/mobile
The Warriors of Qiugang
, a Yale Environment 360
video, chronicles a Chinese village’s fight against a polluting chemical plant. It was nominated for a 2011 Academy Award for Best Documentary Short.
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.