Wilfrid Laurier University Scholars Commons @ Laurier Theses and Dissertations (Comprehensive) 2020 ABIOTIC CONDITIONS, ALGAL BIOMASS & FISH GROWTH RATES AFFECT FISH MERCURY CONCENTRATIONS IN TWO SUBARCTIC LAKES Ari Yamaguchi
[email protected] Follow this and additional works at: https://scholars.wlu.ca/etd Part of the Integrative Biology Commons, and the Terrestrial and Aquatic Ecology Commons Recommended Citation Yamaguchi, Ari, "ABIOTIC CONDITIONS, ALGAL BIOMASS & FISH GROWTH RATES AFFECT FISH MERCURY CONCENTRATIONS IN TWO SUBARCTIC LAKES" (2020). Theses and Dissertations (Comprehensive). 2256. https://scholars.wlu.ca/etd/2256 This Thesis is brought to you for free and open access by Scholars Commons @ Laurier. It has been accepted for inclusion in Theses and Dissertations (Comprehensive) by an authorized administrator of Scholars Commons @ Laurier. For more information, please contact
[email protected]. ABIOTIC CONDITIONS, ALGAL BIOMASS & FISH GROWTH RATES AFFECT FISH MERCURY CONCENTRATIONS IN TWO SUBARCTIC LAKES by Ari Yamaguchi BS, Environmental Science, Drexel University, 2017 THESIS Submitted to the Department of Biology Faculty of Science in partial fulfillment of the requirements for the Master of Science in Integrative Biology Wilfrid Laurier University 2020 Yamaguchi, 2020©️ i Yamaguchi, Hg in subarctic fisheries ABSTRACT Kakisa Lake and Tathlina Lake, located in the Dehcho Region of the Northwest Territories, support important fisheries for the local Ka’a’gee Tu First Nation (KTFN). Recently, Walleye (Sander vitreus) of typical catch size in Tathlina Lake were found to have mercury concentrations above Health Canada’s commercial sale guideline of 0.5 ppm. Wild foods with elevated mercury concentrations can pose health risks to the humans who consume them, depending on consumption amounts and vulnerability factors such as age and pregnancy.