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  • The expression of functional traits during seedling establishment in two populations of Pinus ponderosa from contrasting climates

    Creator:
    Kerr, Kelly L.
    Abstract:
    Vegetation patterns and species distributions are strongly linked to soil moisture regimes, and populations within a species from contrasting climatic regimes could exhibit differences in the degree to which certain functional traits related to establishment are expressed. Tree seedling survival is crucial for forest regeneration, and thus may be a...
    Resource Type:
    Masters Thesis
    Full Text:
    of ponderosa pine (Pinus ponderosa) from sites with contrasting climate regimes east (PIPOEAST) and

  • Tree Vigor Response and Competitive Zone Density in Mature Ponderosa Pine

    Creator:
    Shaw, Randi C.
    Abstract:
    This study explored the relationship of mature ponderosa pine (Pinus ponderosa Dougl. ex Laws) tree vigor and competitive zone density following thinning and fuel reduction treatments. Competitive zone density (CZD) was defined as the total tree basal area (m²/ha) surrounding a given ponderosa pine tree within a 10m fixed radius...
    Resource Type:
    Masters Thesis
    Full Text:
    adjacent trees to be considered for mature ponderosa pine, especially when reducing drought vulnerability

  • Approaches for Characterizing Plant Physiological Responses to Environmental Stress

    Creator:
    Marias, Danielle E.
    Abstract:
    It is uncertain how predicted changes in climate will impact vegetation responses and plant species’ distributions because the physiological mechanisms underlying thresholds for damage are not well understood, and responses to stress vary by functional type and developmental stage. Thus, it is crucial to investigate physiological responses to heat and...
    Resource Type:
    Dissertation
    Full Text:
    (2016) Local-Scale Drought Adaptation of Ponderosa Pine Seedlings at Habitat Ecotones. Forest Science

  • Using soil data to enhance modeling of forest responses to climate change

    Creator:
    Peterman, Wendy L.
    Abstract:
    The over-arching theme of this work is that soil data affect the performance and realism of vegetation models with particular focus on their ability to predict or explain disturbances such as fire or disease. We tested the sensitivity of the Excel version of the 3-PG model to soil properties and...
    Resource Type:
    Dissertation
    Full Text:
    drought that lasts longer than one year. Chapter 3 shows how ponderosa pines in western Montana are more