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Pollution in the Great Lakes. Amy Latham, Amanda Tsang, Eric Wright Environ 110, Section 5 . A Study of how pollution affects wildlife in the Great Lakes. Introduction.

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Pollution in the great lakes l.jpg

Pollution in the Great Lakes

Amy Latham, Amanda Tsang, Eric Wright

Environ 110, Section 5

A Study of how pollution affects wildlife in the Great Lakes


Introduction l.jpg
Introduction

  • Earlier beliefs that water could dissolve chemicals and other wastes led to the degradation of the Great Lakes ecosystem

  • Pollution has negative effects on the flora and fauna of the Great Lakes ecosystem.

    -reducing water quality, contaminating soils, and harming the lake wildlife and surrounding region


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HYPOTHESIS

  • To demonstrate a direct effect that pollution has on the Great Lakes ecosystem, we analyzed data from four pollutants and the biomass of trout residing in Lake Huron.

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Background: Sources of Pollution

  • Point-source pollution

    - direct source of pollution (e.g. a pipe)

    - mercury, sewage, and fecal matter

  • Non point-source pollution

    - non-specific locations (e.g. air-bound pollution, industrial runoff)

    - fertilizers and pesticides


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Background: Effects of Pollution

  • Pollutants move up food chains

  • Reduce fish stocks

  • Decrease water quality

  • Spreads diseases


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Methods

  • Researched material through Mirlyn website

  • Used Microsoft Excel to create graphs to analyze the relation between pollutants and the Great Lakes.

  • We used specific data from the biomass of Lake Huron Trout and the concentration of four prominent chemicals in Lake Huron


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Results and Discussion

Pollutants concentration found in tissue of Lake Huron trout.

PCB and toxaphene have highest concentration.


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Results and Discussion

Relationship between the four pollutants and trout biomass (kg).


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Results and Discussion

Specific correlation between trout biomass and PCB concentration


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Results and Discussion

Specific correlation between trout biomass and toxaphene concentration.


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Implications

  • Restricts wildlife and fish growth

  • Wildlife deformities and spread of diseases

  • Degrades natural communities

  • Limits wildlife consumption

  • Closes beaches and hinders other recreational activities


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Solutions

  • Clean Water Act, 1972

  • Great Lakes Water Quality Agreement, 1972

  • State of the Lakes Ecosystem conference

  • Clean Michigan Initiative, 1998


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Conclusion

  • Great Lakes are an important source of freshwater and their contamination affects both the wildlife surrounding the region and those who utilize its vast resources

  • Though measures have been taken, more are needed to protect the valuable resources of the Great Lakes


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References

  • Agency for Toxic Substances and Disease Registry. ToxFAQs for Polychlorinated Biphenyls(PCBs). Feb 2001. http://www.atsdr.cdc.gov/tfacts17.html#bookmark02 (Oct. 23 2006)

  • Agency for Toxic Substances and Disease Registry. ToxFAQs for Toxaphene. Sept. 1997. http://www.atsdr.cdc.gov/tfacts94.html (Oct. 23 2006)

  • Hickey, J.P., Batterman, S. A., and Chernyak, S. M. 2006 Trends of Chlorinated Organic Contaminants in Great Lakes Trout and Walleye from 1970 to 1998. Arch. Environ. Contam. Toxicol. 50, 97-110

  • Liu, Lubo; Phanikumar, Mantha S.; Molloy, Stephanie L.; Whitman, Richard L.; Shivley, Dawn A.; Nevers, Meredith B.; Shwab, David J.; Rose, Joan B. 2006. Modeling the transport and Inactivation of E. coli and Enterococci in the Near-Shore Region of Lake Michigan. Environ. Sci. Technol. 40, 5022-5028

  • Michigan Department of Environmental Quality. 1999. First Round of Environmental Bonds sold Over Internet for Clean Michigan Initiative. Office of Great Lakes Activity Report, Lansing, MI.


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References Continued

  • Michigan Department of Environmental Quality. 1998. Great Lakes Trends: Into the New Millennium. Office of the Great Lakes, Lansing, MI.

  • Robertson, Andrew, and Lauenstein, Gunnar G. 1998. Distribution of Chlorinated Organic Contaminants in Dreissenid Mussels Along the Southern Shores of the Great Lakes. J. Great Lakes Res. 24(3): 608-619

  • Shear, Harvey. 2006. The Great Lakes, an Ecosystem Rehabilitated, but Still Under Threat. Environmental Monitoring and Assessment 113: 199-225

  • TEACH. Water Pollution in the Great Lakes http://www.great-lakes.net/teach/pollution/water/water1.html (Oct. 23, 2006)

  • U.S. Environmental Protections Agency. Clean Water Act, July 2006. http://www.epa.gov/r5water/cwa.htm (Oct. 23, 2006)


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