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  • Foliar respiration in an old-growth coniferous forest

    Creator:
    Cooper, Clifton E.
    Abstract:
    Foliar respiration forms a large component of the carbon balance of any coniferous forest. We examine seasonal, interannual, spatial and interspecific variation of foliar maintenance respiration in a forest in Washington, USA, with measurements made quarterly for >4 years on 400-year old trees of Pseudotsuga menziesii, Tsuga heterophylla and Thuja...
    Resource Type:
    Dissertation
    Full Text:
    Respiration in an Old-Growth Coniferous Forest. Abstract approved: Foliar respiration forms a large

  • Dry coniferous forests in the Western Oregon Cascades

    Creator:
    Means, Joseph E.
    Abstract:
    Pseudotsuga menziesii dominates the forests of the Pacific Northwest. But though it is dominat, Tsuaa heteroohylla or Abies amabilis is usually climax. Many researchers have studied Pseudotsuga on the widespread mesic sites where it is seral, but few have examined the relatively rare ecosystems in which Pseudotsuga or its associate...
    Resource Type:
    Dissertation
    Full Text:
    variation in plant moisture stress on dry and modal H.J. Andrews reference stands 13 Dry coniferous forest

  • Characteristics of soil organic matter in two forest soils

    Creator:
    Crow, Susan E.
    Abstract:
    Soil organic matter (SOM) is the terrestrial biosphere's largest pool of organic carbon (C) and is an integral part of C cycling globally. Soil organic matter composition typically can be traced directly back to the type of detrital inputs; however, the stabilization of SOM results as a combination of chemical...
    Resource Type:
    Dissertation
    Full Text:
    : Characteristics of Soil Organic Matter in Two Forest Soils Abstract approved Soil organic matter (SOM) is the

  • Analysis and prediction of patterns in lichen communities over the western Oregon landscape

    Creator:
    Peterson, Eric B.
    Abstract:
    The diverse lichen flora of the Pacific Northwest is being impacted by population growth and by forest management practices. Accumulating information about our lichen flora will improve our conservation strategies. This dissertation first collects information to improve our understanding of how lichen communities vary among forests of differing structure, and...
    Resource Type:
    Dissertation
    Full Text:
    forest management practices. Accumulating information about our lichen flora will improve our

  • Soil fungal hyphal dynamics and seasonal hypogeous sporocarp production in western Oregon Douglas-fir forests

    Creator:
    Hunt, Gary, 1945-
    Abstract:
    Total length and biomass of fungal mycelium in the soil of a young Douglas-fir stand in the central Oregon Coast Range were estimated over 27 months with the agar-film technique. In a second study, phenology and taxonomy of hypogeous (belowground) sporocarps were studied over 32 months in a nearby, young...
    Resource Type:
    Dissertation
    Full Text:
    Mycelial length for some temperate conifer forest sites 34 Hyphal biomass from some temperate coniferous

  • A comparative study of temperate Chamaecyparis forests

    Creator:
    Hawk, Glenn M.
    Abstract:
    The objectives of this study include: (1) analysis of Chamaecyparis lawsoniana, C. taiwanensis, and C. formosensis forests including the structure, composition, and dynamics of plant communities and their environmental relationships; and (2) comparison of the temperate Chamaecyparis forests of Taiwan and the Pacific Northwest with emphasis on structural and successional...
    Resource Type:
    Dissertation
    Full Text:
    stands. 4000m Wang, 1963 ' 3000 m 2000 m. Montane Coniferous Forest mixed conifers Alpine Forest

  • Epiphytic macrolichens in relation to forest management and topography in a western Oregon watershed

    Creator:
    Berryman, Shanti D.
    Abstract:
    This dissertation describes patterns in epiphytic macrolichen community composition, diversity, and biomass across various stand types in the Blue River watershed of western Oregon. It first examines the relative importance of ecological factors such as stand age, remnant tree retention, and topography to lichen communities in the landscape. It then...
    Resource Type:
    Dissertation
    Full Text:
    Pathology presented on October 8, 2002. Title: Epiphytic Macrolichens in Relation to Forest Management

  • An investigation of vegetation : hydrology interactions in watershed 1 at the H.J. Andrews Experimental Forest

    Creator:
    Bredensteiner, Kim C.
    Abstract:
    For management purposes, it would be useful to be able to predict streamflow response to forest practices in small, unmonitored basins. The primary objective of this study is to investigate the influence of early successional vegetation on summer streamflow levels. The long-term data records from watershed 1 at the H.J....
    Resource Type:
    Masters Thesis
    Full Text:
    Investigation of Vegetation - Hydrology Interactions in Watershed I at the H.J. Andrews Experimental Forest

  • Canopy epiphyte studies in the central Oregon Cascades : implications for the management of Douglas-fir forests

    Creator:
    Sillett, Stephen Charles
    Abstract:
    This thesis includes four separate studies. The first two studies assessed edge effects in a 700-year-old forest. After 20 years of exposure, epiphyte assemblages on the clearcut edge were similar to those of the forest interior, but there were some differences in vertical distribution patterns. Several species restricted to the...
    Resource Type:
    Dissertation
    Full Text:
    first two studies assessed edge effects in a 700-year-old forest. After 20 years of exposure, epiphyte

  • Cryptogam communities in forest and steppe ecosystems of Oregon, USA

    Creator:
    Root, Heather T.
    Abstract:
    I focus on addressing knowledge gaps relating to management of cryptogams in Oregon's public lands in Pseudotsuga menziesii-Tsuga heterophylla forests on the west side of the Cascade Range and dryland steppe in the Cascade Range's rainshadow. While a great deal of research has illustrated the importance of late-successional forests for...
    Resource Type:
    Dissertation
    Full Text:
    presented on June 9, 2011. Title: Cryptogam Communities in Forest and Steppe Ecosystems of Oregon, USA