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Filtering by: Committee Member Christensen, B. E. Remove constraint Committee Member: Christensen, B. E. Subject Alder -- Diseases and pests -- Oregon, Western Remove constraint Subject: Alder -- Diseases and pests -- Oregon, Western

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  • Phytophthora species and riparian alder tree damage in western Oregon

    Creator:
    Sims, Laura L.
    Abstract:
    The genus Phytophthora contains some of the most destructive pathogens of forest trees, including the most destructive pathogen of alder in recent times, Phytophthora alni. Alder trees were reported to be suffering from canopy dieback in riparian ecosystems in western Oregon, which prompted a survey of alder health and monitoring...
    Resource Type:
    Dissertation
    Full Text:
    ...........................................................................44 3.1 Phytophthora species composition from (a) stream water and (b) the rhizosphere associated