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Article: Destructive invaders.(Lake Huron.)
- Article from:
- Canada and the World Backgrounder
- Article date:
- January 1, 2005
CopyrightCOPYRIGHT 2005 Canada & the World. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Lake Huron is the second largest of the Great Lakes with a surface area of 59,570 [km.sup.2] the Canadian portion of the lake (36,000 [km.sup.2]), however, is the greatest expanse of inland water in the country.
The Lake Huron fishery has been depleted from over-fishing, destruction of spawning grounds, and the introduction of exotic species (lamprey eel, alewife, smelt) that compete with species native to the lake.
Chemical contamination is a problem in Lake Huron. There are low concentrations of heavy metals, and pesticides, and PCB's have been found. Higher levels (especially of lead) are found in the sediments and near industrialized centres.
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