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    The Influence of wetlands and watershed geology on lake chemistry of five remote lakes in Northwestern Ontario

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    RogersK2011m-1b.pdf (1.372Mb)

    Date

    2012-11-10

    Author

    Rogers, Kyle

    Degree

    Master of Science

    Discipline

    Biology

    Subject

    Mercury
    Environmental aspects
    Ontario, Northwestern
    Methylmercury
    Walleye (Fish)
    Effect of water pollution on
    Effect of metals on
    Water chemistry
    Geochemistry

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    Abstract

    In chapter 1 of this study the relationship between spatial, chemical, and biological factors and their influence on mercury concentration s in walleye were examined. Water, sediment, and fish tissue samples were collected in the summer of the 2008 from 5 lakes near Aroland First Nation, in Nortwesthern, Ontario, Canada and analyzed for metals, mercury, pH, and alkalinity. Arc GIS was used to extract spatial data from base map s and digital elevation models, in order to calculate lake area, watershed area, and wetland area for each study lake. Hg concentrations in fish tissue were compared between lakes using a standardized length using an ANCOV A. The test proved that a significant difference was present (p=O.OOOO with 95% confidence intervals). Walleye (Sander vitreum) from Melchett Lake had the highest levels of mercury with a mean concentration of 0,5505ug/g, while E snagami had the lowest at 0.2228 ug/g.

    URI

    http://knowledgecommons.lakeheadu.ca/handle/2453/328

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