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  • Growth analysis of heterogeneous stands of ponderosa pine and lodgepole pine in central Oregon

    Creator:
    Mainwaring, Douglas B.
    Abstract:
    Basal area and height growth were analyzed for individual trees in uneven-aged ponderosa and lodgepole pine stands in central Oregon. Basal area growth was modeled as a function of other stand and tree variables to address five general objectives: 1) to compare the predictive ability of distance-dependent versus distance-independent stand...
    Resource Type:
    Masters Thesis
    Full Text:
    individual trees in uneven-aged ponderosa and lodgepole pine stands in central Oregon. Basal area growth

  • Crown structure, stand dynamics, and production ecology of two species mixtures in the central Oregon Cascades

    Creator:
    Garber, Sean M.
    Abstract:
    Knowledge of stand structure, stand dynamics, and production ecology of species mixtures lags well behind that of single-species, even-aged stands. Two mixed-species spacing trials in central Oregon allowed investigation of mixed-species dynamics in a controlled experimental setting. The first site, Pringle Butte, is a mixture of ponderosa pine (Pinus ponderosa...
    Resource Type:
    Masters Thesis
    Full Text:
    pine (Pinus ponderosa Dougl. ex Laws.) and lodgepole pine (Pinus contorta Dougl. ex Loud.). The

  • Climate-growth relationships of western juniper and ponderosa pine at the pine-woodland ecotone in southern Oregon

    Creator:
    Knutson, Kevin C.
    Abstract:
    Pinyon-juniper woodlands throughout the western U.S. have expanded rapidly following European settlement during the late 19th century. In central and eastern Oregon, western juniper (Juniperus occidentalis var. occidentalis Hook.) encroachment has been previously documented in the sagebrush steppe and upper elevation aspen communities. While these vegetation changes and dynamics have...
    Resource Type:
    Masters Thesis
    Full Text:
    January 5, 2006. Title: Climate-Growth Relationships of Western Juniper and Ponderosa Pine at the

  • Seedling response to vegetation management in northeastern Oregon

    Creator:
    Lindsay, Amanda A.
    Abstract:
    Northeastern Oregon geology and climate provides moderately productive conditions for forest management and timber production. Although site preparation and planting are commonly used silvicultural practices, little research exists on the efficacy of specific forest herbicides and responses of seedling survival and growth in this region. This research seeks to improve...
    Resource Type:
    Masters Thesis
    Full Text:
    first study re-evaluates ponderosa pine (Pinus ponderosa) growth and survival twenty years after