Index Catalog // ScholarsArchive@OSU

Age structure and spatial pattern of old-growth ponderosa pine in Pringle Falls Experimental Forest, central Oregon

Creator:: Morrow, Robert J.
Abstract:: The dynamics of stands In old-growth ponderosa pine (Pinus ponderosa) forests on the eastern flank of the central Oregon Cascades are Investigated. Age structure and spatial pattern of ponderosa pine within the Pringle Falls Experimental Forest Research Natural Area coupled with the fire history of the area aid In Interpreting...
Resource Type:: Masters Thesis

The fate of organic and inorganic nitrogen inputs in an old-growth forest of the central Oregon Cascade Range

Creator:: Holub, Scott M.
Abstract:: Forests in the Pacific Northwest receive very little nitrogen through atmospheric deposition and thus studying the nitrogen cycle in this region can provide insights into how the unpolluted nitrogen cycle functions. I examined the fate of organic nitrogen versus inorganic nitrogen and the effect of tamlins on N retention by...
Resource Type:: Dissertation
Full Text:: Organic and Inorganic Nitrogen Inputs in an Old-growth Forest of the Central Oregon Cascade Range

Land cover at northern spotted owl nest and non-nest sites, east-central Coast Ranges, Oregon

Creator:: Perkins, John P.
Abstract:: This study examined the differences, at various scales, between northern spotted owl (Strix occidentalis caurina) nest sites and non-nest sites, i.e., sites where no nests were found during surveys, in the Coast Ranges of Oregon. I compared land cover around 41 owl nest sites (ONS) and 41 non-nest sites (NNS)...
Resource Type:: Masters Thesis
Full Text:: - Mature forest ( or percentage ot) OR - Old-remnant forest (or percentage ot) OG - Old-growth forest

Tree species-soils relationships in old-growth forests of the Oregon Coast Range

Creator:: Cross, Alison
Abstract:: Tree species directly and indirectly affect soil nutrient cycles. I sought to characterize soils and foliage associated with four common canopy tree species (Douglas-fir, western hemlock, western redcedar, and bigleaf maple) in mixed-species old-growth forests of the Oregon Coast Range and to determine whether and how soils differ among the...
Resource Type:: Masters Thesis
Full Text:: , western hemlock, western redcedar, and bigleaf maple) in mixed-species old-growth forests of the Oregon

Spatial and temporal patterns of "super-old" Douglas-fir trees of the central western Cascades, Oregon

Creator:: Giglia, Sheryl K.
Abstract:: Old-growth in the Pacific Northwest is generally defined as trees that are more than 200 years old. A great deal of analysis and discussion about old-growth forests in western Oregon, however, has focused on the relatively widespread 400 to 500 year age class of primarily Douglas-fir (Pseudotsuga menziesii) trees. The...
Resource Type:: Masters Thesis

Origins of the old-growth forest conflict (1971-1989) : a new model for resource allocation

Creator:: Wilson, Mark Shelton
Abstract:: The old-growth forest conflict is part of the evolving debate over how to use the federal public lands. This study documents the origins and development of the old-growth issue through 1989. The controversy began in the early 1970s when scientists initiated studies of old-growth forests and northern spotted owls, and...
Resource Type:: Dissertation

Characterization of fungal and bacterial communities associated with mat-forming ectomycorrhizal fungi from old-growth stands in the H.J. Andrews Experimental Forest

Creator:: Hesse, Cedar N.
Abstract:: Mat-forming ectomycorrhizal (EcM) fungi represent a prevalent constituent of many temperate forest ecosystems and create dramatic changes in soil structure and chemistry. EcM mat soil have been shown to have increased microbial respiration rates and have been hypothesized to harbor unique assemblages of fungi and bacteria. The objectives of this...
Resource Type:: Dissertation
Full Text:: Bacterial Communities Associated with Mat- forming Ectomycorrhizal Fungi from Old-growth Stands in the H.J

Economic Benefit from Allowing Wildfires to Burn in Federal East-Side Cascade Forests

Creator:: Gagnon, Aaron R.
Abstract:: In this thesis I examine the question: can allowing a wildfire to burn this year result in a net positive economic gain? To answer this question I created 2,500 multiple sets of paired scenarios (called a fire of interest) which consist of ignitions, vegetation growth, and timber harvest over the...
Resource Type:: Masters Thesis
Full Text:: ) summarized forest conditions for five ponderosa pine-dominated stands in northeastern Oregon. These

Thinning aged Douglas-fir : an analysis of mobilization costs and a log bucking strategy for revenue improvement

Creator:: Pilkerton, Stephen J.
Abstract:: Contract harvest operations have become the preferred approach to reducing the largest cost component of timber production through free market competition amongst logging contractors bidding or negotiating for work. The goal of this research was to investigate economic components of harvesting operations not previously studied for steep slope thinning harvests...
Resource Type:: Dissertation
Full Text:: Stand project. Forest Research Laboratory, Oregon State University. Corvallis. Research Contribution

The economics of carbon sequestration in western Oregon forests

Creator:: Im, Eun Ho
Abstract:: This study considered regional forest policies for sequestering carbon in existing forests in western Oregon. A model of log markets in western Oregon was employed to examine the impacts of forest policy changes on future carbon stock, harvests, and management activities. A carbon tax program, as a mitigation option for...
Resource Type:: Dissertation
Full Text:: forests. Nearly half of National Forest administered by USDA Forest Service is old growth forests (>150

ScholarsArchive@OSU

Age structure and spatial pattern of old-growth ponderosa pine in Pringle Falls Experimental Forest, central Oregon

The fate of organic and inorganic nitrogen inputs in an old-growth forest of the central Oregon Cascade Range

Land cover at northern spotted owl nest and non-nest sites, east-central Coast Ranges, Oregon

Tree species-soils relationships in old-growth forests of the Oregon Coast Range

Spatial and temporal patterns of "super-old" Douglas-fir trees of the central western Cascades, Oregon

Origins of the old-growth forest conflict (1971-1989) : a new model for resource allocation

Characterization of fungal and bacterial communities associated with mat-forming ectomycorrhizal fungi from old-growth stands in the H.J. Andrews Experimental Forest

Economic Benefit from Allowing Wildfires to Burn in Federal East-Side Cascade Forests

Thinning aged Douglas-fir : an analysis of mobilization costs and a log bucking strategy for revenue improvement

The economics of carbon sequestration in western Oregon forests

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