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    Effects Of Migratory Geese On Nitrogen Availability And Primary Productivity In Subarctic Barley Fields

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    Pugin_J_1996.pdf
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    Author
    Pugin, Jennifer Adrienne
    Chair
    Sparrow, Stephen
    Keyword
    Agronomy
    Ecology
    Soil sciences
    Metadata
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    URI
    http://hdl.handle.net/11122/8528
    Abstract
    Agricultural areas are important for migratory geese, providing easy access to high energy foods. Geese affect agricultural production by removing biomass and by depositing fecal nutrients. This study used $\sp{15}$N as a tracer to examine the quantitative effects of fecal nitrogen contributions on agricultural production.<p> During winter 1994-95, 12-week lab incubations were conducted to determine net nitrogen and carbon mineralization potentials in soils amended with barley straw, grain, and goose feces. The greatest rates of nitrogen mineralization occurred in the soil amended with goose feces. Carbon mineralization occurred at the greatest rate in the soil amended with grain.<p> In comparison to barley grain and straw, goose feces provided the greatest amount of available nitrogen to the soil and to subsequent crops, and consequently higher barley yields (59 and 62% increase, respectively). However, supplementary fertilizer is still necessary for farmers to obtain maximum barley yields. <p>
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 1996
    Date
    1996
    Type
    Thesis
    Collections
    Older Theses Not Clearly Affiliated with a Current College
    Theses (Unassigned)

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