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  • Quaking aspen persistence in three Oregon landscapes

    Creator:
    Seager, S. Trent
    Abstract:
    Quaking aspen (Populus tremuloides) is an important tree species in the western United States and there has been much concern about its persistence. In this thesis, I report on aspen in a portion of its range that has not been previously evaluated: the eastern and western slopes of the Central...
    Resource Type:
    Masters Thesis
    Full Text:
    ........................................................................................ 27 CHAPTER 3 – QUAKING ASPEN (POPULUS TREMULOIDES) IN WESTERN OREGON

  • Complexity of food web interactions in a large mammal system

    Creator:
    Eisenberg, Cristina
    Abstract:
    Food webs consist of a combination of bottom-up (resource-driven) and top-down (predator-driven) effects. The strength of these effects depends on the context in which they occur. I investigated food web (trophic) relationships between wolf (Canis lupus) predation, elk (Cervus elaphus) herbivory, aspen (Populus tremuloides Michaux) recruitment, and fire. The study...
    Resource Type:
    Dissertation
    Full Text:
    (Cervus elaphus) herbivory, aspen (Populus tremuloides Michaux) recruitment, and fire. The study setting