The Effects of Freshet Turbidity on Selected Aspects of the Biogeochemistry and the Trophic Status of Flathead Lake, Montana U.S.A.

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The present study sought to falsify three distinct hypotheses about how the interactions of freshet clay turbidity with Flathead Lake may be affecting its trophic state: 1) that freshet-derived turbidity causes precipitation of organic detritus from the water column by flocculation and/or coagulation of dissolved and colloidal organic carbon and seston; 2) that flocculated clay-organic detritus complexes become increasingly infested with microbial biomass as they sink through the water column; and 3) that primary productivity is reduced and subsequently maintained at low levels throughout the summer and fall because of the phosphorus stripping action of sedimenting clay particles. In addition, … continued below

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x, 229 leaves : ill., maps

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Stuart, Tom J. August 1983.

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The present study sought to falsify three distinct hypotheses about how the interactions of freshet clay turbidity with Flathead Lake may be affecting its trophic state: 1) that freshet-derived turbidity causes precipitation of organic detritus from the water column by flocculation and/or coagulation of dissolved and colloidal organic carbon and seston; 2) that flocculated clay-organic detritus complexes become increasingly infested with microbial biomass as they sink through the water column; and 3) that primary productivity is reduced and subsequently maintained at low levels throughout the summer and fall because of the phosphorus stripping action of sedimenting clay particles. In addition, this study attempted to firmly document mass balances for some ecologically important elements, nutrient loading rates, steady state nutrient concentrations and annual lake primary productivity. It was also necessary to assess the trophic status of the lake in light of any new findings from this research, especially related to the ecological role of freshet turbidity.

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x, 229 leaves : ill., maps

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  • August 1983

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Thumbnail image of item number 1 in: 'The Effects of Freshet Turbidity on Selected Aspects of the Biogeochemistry and the Trophic Status of Flathead Lake, Montana U.S.A.'.
Thumbnail image of item number 2 in: 'The Effects of Freshet Turbidity on Selected Aspects of the Biogeochemistry and the Trophic Status of Flathead Lake, Montana U.S.A.'.
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Stuart, Tom J. The Effects of Freshet Turbidity on Selected Aspects of the Biogeochemistry and the Trophic Status of Flathead Lake, Montana U.S.A., dissertation, August 1983; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc331723/: accessed September 27, 2023), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .

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