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    Effects of antimony mining on stream invertebrates and primary producers in Denali National Park, Alaska

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    Wedemeyer_K_1987.pdf
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    Author
    Wedemeyer, Kathleen
    Keyword
    Aquatic ecology
    Antimony ores
    Alaska
    Denali National Park and Preserve
    Stream ecology
    Water quality
    Environmental aspects
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/11122/7951
    Abstract
    Heavy metals, primarily antimony, arsenic and manganese from antimony mines in Denali National Park, Alaska impacted all levels of the stream ecosystem. Decreased algal, moss and macroinvertebrate abundance (but not changes in macroinvertebrate trophic organization) were all clearly associated with mining activity in Slate and Eldorado creeks. Crustacea, Chironomidae (Diptera), Hydracarina (Arachnida), Nemouridae (Plecoptera), and Zapada (Nemouridae) decreased in relative abundance with metal pollution while Capniidae (Plecoptera), Nemoura (Nemouridae), and Podmosta (Nemouridae) increased in relative abundance at mine sites. The data from Stampede Creek demonstrated that mineralized but unmined stream reaches may be impacted by heavy metals. Unexpectedly higher selenium levels upstream of the mine may account for the general lack of substantial differences in macroinvertebrates and periphyton upstream and downstream of the mine. However, macroinvertebrate and periphyton abundances were lower at both sites on Stampede Creek than at the unmined control stream, Jumbo Creek.
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 1987
    Date
    1987-12
    Type
    Thesis
    Collections
    Theses supervised by AKCFWRU
    Theses (Unassigned)
    Older Theses Not Clearly Affiliated with a Current College

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