Index Catalog // ScholarsArchive@OSU

Impact of Climate and Disturbance on the Formation of Earlywood and Latewood in Douglas-fir at the Salal Fields Study Site

Creator:: Gourley, Derek M. F.
Abstract:: Wood density is controlled to a large extent by the relative widths of earlywood and latewood in the stem, but the mechanisms controlling these amounts are poorly understood in coastal Douglas-fir. To understand the role of climatic factors, one hundred and thirty-six increment cores were collected and measured from the...
Resource Type:: Masters Thesis
Full Text:: approved: ______________________________________________________ Douglas A. Maguire Wood

Douglas-fir (Psuedotsuga menziesii) biomass and nutrient removal under varying harvest scenarios involving co-production of timber and feedstock for liquid biofuels

Creator:: Coons, Kristin L.
Abstract:: In this study an improved model of biomass and nutrient estimation of coastal Douglas-fir (Psuedotsuga menziesii) in the Pacific Northwest has been developed across a wide range of stand management regimes. This study quantifies and defines the type and intensity of biomass harvest and associated removal for actively managed stands...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Douglas A. Maguire In this study an improved model of biomass and nutrient estimation of

Estimation of leaf area index and simulation of evapotranspiration for intensively managed Douglas-fir forests

Creator:: Rogers, Nicole S.
Abstract:: Understanding the tradeoff between water use and productivity is critical for modeling growth of intensively managed Douglas-fir forests in the Pacific Northwest. Evapotranspiration is closely linked to carbon dioxide intake during the process of photosynthesis. However, summer drought characterizing the growing season in this region imposes a limit on carbon...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________________ Douglas A. Maguire Understanding the tradeoff between water use and productivity is

Exploration of statistical methods for synthesizing the effects of variable-retention harvesting on multiple taxa

Creator:: Lam, Tzeng Yih
Abstract:: Variable-retention harvesting was proposed to reduce loss of biodiversity and ecosystem processes associated with late-seral Douglas-fir (Pseudotsuga menziesii) forests in the Pacific Northwest. The Demonstration of Ecosystem Management Options experiment was established to test this hypothesis. Analysis presents various challenges to drawing statistical inferences about treatment effects. This dissertation explored...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Douglas A. Maguire Variable-retention harvesting was proposed to reduce loss of

Growing stock assessment and growth prediction system for managed hill dipterocarp forest of Peninsular Malaysia

Creator:: Kassim, Abd. Rahman
Abstract:: The silviculture of mixed dipterocarp forests of Peninsular Malaysia can potentially be improved by developing quantitative tools and guidelines for this forest type. This thesis addresses three key objectives; 1) to test the hypothesis that a maximum size-density relationship can be identified in hill dipterocarp forests of Peninsular Malaysia, 2)...
Resource Type:: Dissertation
Full Text:: approved Signature redacted for privacy. •~ V v Douglas A. Maguire The silviculture of mixed

A biological classification and characterization of structure in managed, mixed-species, multi-aged stands

Creator:: Singleton, Ryan B.
Abstract:: Forest management requires classification of forest stands into groupings or types based on structural similarities, even when structure varies continuously along gradients. Managed, mixed-species, multi-aged forest stands often display complex structures containing extreme variation in trees size, density, and species composition, and as a result have diverse canopy structures. A...
Resource Type:: Masters Thesis

Twenty-five-year response of Larix occidentalis stem form to five stand density regimes in the Blue Mountains of eastern Oregon

Creator:: Lennette, Andrew P.
Abstract:: Upper-stem diameter measurements from a levels-of-growing-stock study on Larix occidentalis in the Blue Mountains of eastern Oregon were collected over a 25 year period with an optical dendrometer. The following hypotheses were tested with these data: 1) stand density regime has a significant effect on stem form; and 2) crown...
Resource Type:: Masters Thesis

Alterations in Douglas-fir crown structure, morphology, and dynamics imposed by the Swiss needle cast disease in the Oregon Coast Range

Creator:: Weiskittel, Aaron R.
Abstract:: Plants respond to defoliation in many different and complex ways, depending on their growth habit and form as well as the extent and duration of the defoliation. Tree crowns have been shown to be quite sensitive to disturbances such as defoliation, however quantitative relationships have rarely been developed, making the...
Resource Type:: Masters Thesis
Full Text:: Oregon Coast Range Abstract approved Douglas A. Maguire Plants respond to defoliation in many

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:: approved: _______________________ _ Douglas A. Maguire Basal area and height growth were analyzed for

Mechanical behavior of coniferous trees subjected to wind loading

Creator:: Moore, John R.
Abstract:: The behavior of coniferous trees subjected to wind loading was investigated through a series of experiments and also through simulation modeling. Previous studies that measured the natural oscillation frequencies and damping ratios were reviewed and equations were developed for predicting the natural frequency of a tree from the ratio of...
Resource Type:: Dissertation

ScholarsArchive@OSU

Impact of Climate and Disturbance on the Formation of Earlywood and Latewood in Douglas-fir at the Salal Fields Study Site

Douglas-fir (Psuedotsuga menziesii) biomass and nutrient removal under varying harvest scenarios involving co-production of timber and feedstock for liquid biofuels

Estimation of leaf area index and simulation of evapotranspiration for intensively managed Douglas-fir forests

Exploration of statistical methods for synthesizing the effects of variable-retention harvesting on multiple taxa

Growing stock assessment and growth prediction system for managed hill dipterocarp forest of Peninsular Malaysia

A biological classification and characterization of structure in managed, mixed-species, multi-aged stands

Twenty-five-year response of Larix occidentalis stem form to five stand density regimes in the Blue Mountains of eastern Oregon

Alterations in Douglas-fir crown structure, morphology, and dynamics imposed by the Swiss needle cast disease in the Oregon Coast Range

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

Mechanical behavior of coniferous trees subjected to wind loading

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