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Filtering by: Subject Canada goose -- Size -- Oregon -- Willamette River Valley Remove constraint Subject: Canada goose -- Size -- Oregon -- Willamette River Valley Committee Member Jackson, Philip Remove constraint Committee Member: Jackson, Philip

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  • Assessment of impacts of Canada geese on wheat production

    Creator:
    Louhaichi, Mounir
    Abstract:
    Numbers of wild Canada geese (Branta canadensis) have increased dramatically during the past 30 years in the lower Columbia and Willamette Valley systems. The damage they cause by grazing and trampling plants can be substantial. The objectives of this research were to: 1) Develop methods that provide reliable estimates of...
    Resource Type:
    Masters Thesis
    Full Text:
    study in the Willamette Valley, Oregon, suggested that goose grazing did not adversely impact annual