Biologists find 'dead zones' around BP oil spill in Gulf
Methane at 100,000 times normal levels have been creating oxygen-depleted areas devoid of life near BP's Deepwater Horizon spill, according to two independent scientistsSuzanne Goldenberg, US environment correspondent
guardian.co.uk, Wednesday 30 June 2010 19.49 BST
Scientists are confronting growing evidence that BP's ruptured well in the Gulf of Mexico is creating oxygen-depleted "dead zones" where fish and other marine life cannot survive.
In two separate research voyages, independent scientists have detected what were described as "astonishingly high" levels of methane, or natural gas, bubbling from the well site, setting off a chain of reactions that suck the oxygen out of the water. In some cases, methane concentrations are 100,000 times normal levels.
Other scientists as well as sport fishermen are reporting unusual movements of fish, shrimp, crab and other marine life, including increased shark sightings closer to the Alabama coast.
Larry Crowder, a marine biologist at Duke University, said there were already signs that fish were being driven from their habitat.
"The animals are already voting with their fins to get away from where the oil spill is and where potentially there is oxygen depletion," he said. "When you begin to see animals changing their distribution that is telling you about the quality of water further offshore. Basically, the fish are moving closer to shore to try to get to better water." ...........(more)
The complete piece is at:
http://www.guardian.co.uk/environment/2010/jun/30/biolo...