Dead Zones in Estuaries Around the World are Doubling in Size and Doubling Again
... the number of oxygen-starved "dead zones" in coastal waters around the world has roughly doubled every decade since the 1960s, killing fish, crustaceans and massive amounts of marine life at the base of the food chain, according to a study released today.
... Diaz and co-author Rutger Rosenberg of the University of Gothenburg in Sweden counted more than 400 dead zones globally, ranging from massive ones in the Baltic Sea and the Gulf of Mexico to small ones that episodically appear in river estuaries. ...
Hypoxia has been seen for decades in such places as the Chesapeake Bay, Lake Erie, the Gulf of Mexico and Long Island Sound, but Diaz's survey has found new zones in the Florida Keys, Puget Sound and tidal creeks in the Carolinas.
"We're saying that hypoxia is now everywhere, it seems," said Diaz. "We can say that human activities really screwed up oxygen conditions in our coastal areas."