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Great Lakes Article:

Researchers hope to unravel Lake Erie's 'dead zone' mystery
The Associated Press
Posted on Pittsburgh Live August 2, 2005

Researchers are using remote-control devices to study the so-called "dead zone" in Lake Erie.
The study, conducted by the National Oceanic and Atmospheric Administration, will collect data from remote-control devices that will move through the lake, monitoring a low-oxygen area where fish and most other aquatic life can't survive.

The researchers hope to be able to tell the Pennsylvania Fish and Boat Commission, the Ohio Department of Natural Resources and other agencies what caused the dead zone, and what they might do in the future to prevent it.

Researchers believe the dead zone might be linked to zebra mussels found in the lake.

Dead zones were common in the 1960s and 1970s when there was more pollution, including phosphorus, in the Great Lakes, but federal pollution laws largely corrected those problems.

However, a dead zone emerged in Lake Erie in the late 1990s that continues to puzzle researchers. The dead zone in 2003 was the largest in recent years, then last year was not noticeable.

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