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Oregon
Washington
Dungeness

Scientists have documented unusual dead zones, water with low-oxygen off the coast of the US Pacific Northwest.

Jane Lubchenco: We've seen six in the last six years, and none before that. [---1---]

That's marine biologist, Jane Lubchenco, at Oregon State University. [---2---] But...

Jane Lubchenco: [---3---]

[---4---] Lubchenco described the scene on the ocean floor during the summer of 2006.

Jane Lubchenco: [---5---]

[---6---]

Our thanks today to NOAA, the National Oceanic and Atmospheric Administration.

【視聽版科學(xué)小組榮譽(yù)出品】
It's surprising to see this in an area that is usually so rich with oxygen, and all of the conditions for life. She said most ocean dead zones are caused by nutrient pollution from fertilizer runoff. The dead zone that we're seeing in Oregon and Washington is different, because it's not connected to runoff of nutrients from the land, but instead is a result of changes in the upwelling of nutrients from the deep sea. The excess nutrients take up all the available oxygen in the water, suffocating ocean life. A virtual wasteland of dead Dungeness crabs, dead worms, dead stars, dead anemones, just littering the sea floor. Lubchenco believes the dead zone is driven by changes in coastal winds, which may be related to climate change.