Oceans

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    • Ocean dead zones off Oregon coast

      Posted by Jeff from Seattle Times

      Dead zones off Oregon's coast that have threatened sea life for the past six summers are unprecedented in the historical record, say scientists at Oregon State University (OSU). The researchers combed through more than 50 years of ocean data to see if the extremely low oxygen levels measured recently also occurred in the past.

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      Ecological upheaval on the edge of the ice

      Posted by Jeff from Seattle Times

      In the past six years, snow crab catches have dropped 85 percent. Most other crab species are in a similar slump. Overfishing is probably a factor — but not the only one. Biologists also have documented a northward shift of crab populations, away from warming waters in the traditional fishing grounds of the southern Bering Sea. Fur seal numbers are dwindling, despite a 20-year-old ban on commercial hunting. Stellar sea lions were declared endangered in 1997. Seabirds that once flocked to the region by the millions are in precipitous decline.

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    • WP: Acidity of oceans may threaten corals

      Posted by Jeff from MSNBC

      The escalating level of carbon dioxide in the atmosphere is making the world\\'s oceans more acidic, government and independent scientists say. They warn that, by the end of the century, the trend could decimate coral reefs and creatures that underpin the sea\\'s food web.

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