| Article ID | Journal | Published Year | Pages | File Type | 
|---|---|---|---|---|
| 4398717 | Journal of Great Lakes Research | 2012 | 14 Pages | 
Abstract
												⺠We establish effectiveness of the 1977 Great Lakes Water Quality Agreement. ⺠Invasive mussels have made offshore waters cleaner than expected. ⺠Despite improvements, Lake Erie still has nutrient enrichment problems. ⺠Offshore waters of lakes Superior, Michigan, Huron and Ontario are ultraoligotrophic.
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											Authors
												Steven C. Chapra, David M. Dolan, 
											