Index Catalog // ScholarsArchive@OSU

The ecology and management of invasive plant species on tropical islands

Creator:: Hooper, Carolina
Abstract:: Tropical island ecosystems have proven to be inordinately vulnerable to invasions by exotic plants and animals. Today these islands only contain small remnant populations of the original flora and fauna, and these populations are facing increasing pressure from invasive plants. This paper attempts to answer four important questions whose solutions...
Resource Type:: Capstone Project

Inter-annual variability of net primary productivity across multiple spatial scales in the western Oregon Cascades : methods of estimation and examination of spatial coherence

Creator:: Woolley, Travis J.
Abstract:: Quantifying and modeling processes involved in the global carbon cycle is important to evaluate the temporal and spatial variability of these processes and understand the effect of this variability on future response to changing climate and land use patterns. Biomass accumulation and Net Primary Productivity (NPP) are large components of...
Resource Type:: Masters Thesis
Full Text:: involved in the global carbon cycle is important to evaluate the temporal and spatial variability of these

Correlation of riparian vegetation and stream attributes

Creator:: Miller, Rachel Ann, 1968-
Abstract:: Riparian plant assemblages give clues of the conditions of the soil and other physical characteristics of their stream-side environment. The plight of the spring/summer, and fall Snake River chinook salmon has aroused interest in fish habitat and the effects of riparian plants on fish habitat. This study was launched to...
Resource Type:: Masters Thesis

Interspecific carbon transfer in ectomycorrhizal tree species mixtures

Creator:: Simard, S. (Suzanne)
Abstract:: The overall goal of this study was to investigate influences of ectomycorrhizae (EM) and interspecific carbon transfer on seedling performance in species mixtures. The objectives were to: (I) determine the potential for EM to link paper birch and Douglas-fir, (ii) quantify gross and net interspecific carbon transfer, and (iii) evaluate...
Resource Type:: Dissertation

Thinning response in Alnus rubra and Arbutus menziesii : effects of spacing, light, and moisture

Creator:: Kim, Sang-kyun
Abstract:: In western Oregon, hardwood trees occupy 20% of the timberland but account for less than 1% of the timber harvest. Information about how to manage them effectively is limited. The objective of this study was to examine: 1) effect of thinning on tree growth, plant moisture stress, and crown cover...
Resource Type:: Masters Thesis

Underplanting and competition in thinned Douglas-fir

Creator:: Brandeis, Thomas James
Abstract:: Understory conifer regeneration needs to occur beneath conifer-dominated canopies if two-storied or uneven-aged structures are to be considered for western Oregon Coast Range stand management. To ensure adequate numbers of seedlings to meet stocking or habitat structure objectives, planting may be a solution. We undertook a multi-level study to determine...
Resource Type:: Dissertation

Genetics of fall, winter and spring cold hardiness in coastal Douglas-fir seedlings

Creator:: O'Neill, Gregory Arthur, 1961-
Resource Type:: Dissertation

Effects of vegetation and soil organisms on soil nutrient dynamics in subalpine Abies lasiocarpa forests

Creator:: Johnson, Kathleen A., 1955-
Abstract:: The broadest goal of the research covered in this thesis was to contribute to our limited knowledge of high elevation forest soil ecology. Based on the reeds of funding agencies, specific objectives were to examine 1) how climate-induced Abies lasiocarpa ([Hook.] Nutt.) forest expansion affects soil nutrient pools, 2) the...
Resource Type:: Dissertation

Effects of canopy gaps in Douglas-fir forests and resource gradients on fecundity and growth of understory herbs

Creator:: St. Pierre, Elizabeth A. (Elizabeth Ann)
Abstract:: Effects of small-scale disturbances on fecundity and growth rates of Linnaea borealis L., Tiarella trifoliata L. var. unifoliata, and Trillium ovatum Pursh. were studied in old-growth forests in the Tsuga heterophylla Zone on the west slope of the Cascade Mountain Range of Oregon. Performance of each species was compared in...
Resource Type:: Dissertation

Wood quality studies in second-growth western redcedar (Thuja plicata Donn.)

Creator:: DeBell, Jeffrey D.
Abstract:: Western redcedar (Thuja plicata Donn.) is a valuable commercial species found in the northwestern United States and southwestern Canada. This dissertation includes four papers focused on wood and stem characteristics of second-growth western redcedar, and how those characteristics vary within the stem or how they are influenced by cultural practices....
Resource Type:: Dissertation

ScholarsArchive@OSU

The ecology and management of invasive plant species on tropical islands

Inter-annual variability of net primary productivity across multiple spatial scales in the western Oregon Cascades : methods of estimation and examination of spatial coherence

Correlation of riparian vegetation and stream attributes

Interspecific carbon transfer in ectomycorrhizal tree species mixtures

Thinning response in Alnus rubra and Arbutus menziesii : effects of spacing, light, and moisture

Underplanting and competition in thinned Douglas-fir

Genetics of fall, winter and spring cold hardiness in coastal Douglas-fir seedlings

Effects of vegetation and soil organisms on soil nutrient dynamics in subalpine Abies lasiocarpa forests

Effects of canopy gaps in Douglas-fir forests and resource gradients on fecundity and growth of understory herbs

Wood quality studies in second-growth western redcedar (Thuja plicata Donn.)

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