Richard Tafoya
Oct 9th, 2009, 03:39 AM
LA Times:
http://www.latimes.com/news/nationworld/nation/la-na-oregon-ocean9-2009oct09,0,4615320.story
An oxygen-depleted "dead zone" the size of New Jersey is starving sea life off the coast of Oregon and Washington and will probably appear there each summer as a result of climate change, an Oregon State University researcher said Thursday.
The huge area is one of 400 dead zones around the world, most of them caused by fertilizer and sewage dumped into the oceans in river runoff.
But the dead zone off the Northwest is one of the few in the world -- and possibly the only one in North America -- that could be impossible to reverse. That is because evolving wind conditions likely brought on by a changing climate, rather than pollution, are responsible, said Jack Barth, professor of physical oceanography (http://www.coas.oregonstate.edu/index.cfm?fuseaction=content.search&searchtype=people&detail=1&id=383) at OSU.
"I really think we're in a new pattern, a new rhythm, offshore now. And I would expect [the low-oxygen zone] to show up every year now," Barth said at a news conference.
Thursday's briefing coincided with the release of a National Science Foundation multimedia report (http://www.nsf.gov/news/special_reports/deadzones/) that said the number of dead zones worldwide was doubling every decade.
In the Pacific Northwest, the report said, the areas of hypoxic, or low-oxygen, water that long have existed far offshore began to appear closer to land in 2002, a phenomenon that may mean they are even deadlier to sea life that exists near the ocean floor.
http://www.latimes.com/news/nationworld/nation/la-na-oregon-ocean9-2009oct09,0,4615320.story
An oxygen-depleted "dead zone" the size of New Jersey is starving sea life off the coast of Oregon and Washington and will probably appear there each summer as a result of climate change, an Oregon State University researcher said Thursday.
The huge area is one of 400 dead zones around the world, most of them caused by fertilizer and sewage dumped into the oceans in river runoff.
But the dead zone off the Northwest is one of the few in the world -- and possibly the only one in North America -- that could be impossible to reverse. That is because evolving wind conditions likely brought on by a changing climate, rather than pollution, are responsible, said Jack Barth, professor of physical oceanography (http://www.coas.oregonstate.edu/index.cfm?fuseaction=content.search&searchtype=people&detail=1&id=383) at OSU.
"I really think we're in a new pattern, a new rhythm, offshore now. And I would expect [the low-oxygen zone] to show up every year now," Barth said at a news conference.
Thursday's briefing coincided with the release of a National Science Foundation multimedia report (http://www.nsf.gov/news/special_reports/deadzones/) that said the number of dead zones worldwide was doubling every decade.
In the Pacific Northwest, the report said, the areas of hypoxic, or low-oxygen, water that long have existed far offshore began to appear closer to land in 2002, a phenomenon that may mean they are even deadlier to sea life that exists near the ocean floor.