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Filtering by: Creator Shindler, Bruce A. Remove constraint Creator: Shindler, Bruce A. Committee Member Coblentz, Bruce Remove constraint Committee Member: Coblentz, Bruce Degree Field Wildlife Science Remove constraint Degree Field: Wildlife Science

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  • Habitat use and selection by sage grouse broods in southeastern Oregon

    Creator:
    Drut, Martin S.
    Abstract:
    In Oregon, sage grouse (Centrocercus urophasianus) were common in the eastern portion of the state. Since 1940 populations declined because of decreased productivity. The western subspecies (C. u. phaios) was listed as a candidate for threatened and endangered status in 1985 because of declines in Oregon and Washington and extirpation...
    Resource Type:
    Masters Thesis
    Full Text:
    Southeastern Oregon Redacted for Privacy Abstract approved: U JOhn A. Cragrd In Oregon, sage grouse

  • Landscape level patterns in biodiversity : plant species and biomass structure

    Creator:
    Heider, Christopher
    Abstract:
    In the tropics, widespread deforestation and conversion of primary forests to agricultural and pasture lands has resulted in losses of composition, structure, and functions of forest landscapes. Deforestation in the tropics is typically preformed via slash-and-burn practices; the byproducts from combustion have been identified as the second-highest form of anthropogenically...
    Resource Type:
    Masters Thesis
    Full Text:
    with respect to an array of environmental variables. These variables included a wide elevational range

  • Juvenile survival and birth-site selection of Rocky Mountain elk in northeastern Oregon

    Creator:
    Rearden, Spencer N.
    Abstract:
    With declining populations and low calf recruitment in northeastern Oregon, much interest has been generated to study the survival rates and causes of mortality of Rocky Mountain elk (Cervus elaphus nelsoni). I investigated the causes of elk calf mortality and the effects of predation risk on birth-site selection by cow...
    Resource Type:
    Masters Thesis
    Full Text:
    adjacent study areas, the Wenaha and Sled Springs, with the use of vaginal implant transmitters, a

  • Ecological relationships between Columbian white-tailed and black-tailed deer in southwest Oregon

    Creator:
    Whitney, Lowell W.
    Abstract:
    I examined ecological relationships and mechanisms of coexistence for sympatric populations of Columbian white-tailed (Odocoileus virginianus leucurus) and black-tailed deer (Odocoileus hemionus columbianus) in Douglas County, Oregon, from September 1997 to August 1998. Horseback transects were used to describe spatial distributions, population overlap, and habitat use for both species. Behavioral...
    Resource Type:
    Masters Thesis