Index Catalog // ScholarsArchive@OSU

Establishment and growth of natural and planted conifers ten years after overstory thinning and vegetation control in 50-year-old Douglas-fir stands

Creator:: Nabel, Mark R.
Abstract:: Forest managers of public lands in western Oregon and Washington have become increasingly interested in creating additional conifer cohorts in young, even-aged, second-growth Douglas-fir stands. The purpose of our research was to assess the establishment, survival, and growth of naturally-regenerated and underplanted conifers 10-13 years after overstory thinning and understory...
Resource Type:: Masters Thesis
Full Text:: Management Plan as critical elements of structural complexity in Oregon Coast Range forests (USDA and

Disturbance and landscape history as a reference for evaluating forest management effects at a regional scale : examples from the Coast Range of Oregon, USA

Creator:: Nonaka, Etsuko
Abstract:: History is an invaluable source of information to understand and evaluate management influences on contemporary ecosystems and landscapes. The first two chapters (Chapters 2 and 3) explored the concept of historical range of variability (HRV) in landscape structure and stand structure using a stochastic fire simulation model to simulate presettlement...
Resource Type:: Masters Thesis
Full Text:: Evaluating Forest Management Effects at a Regional Scale: Examples from the Coast Range of Oregon, USA. by

Effects of residual trees on growth of young to mature Douglas-fir and western hemlock in the western central Oregon Cascades

Creator:: Zenner, Eric K.
Abstract:: The purpose of this study was to assess how growth of young to mature Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and western hemlock (Tsuga heterophylla (Raf.) Sar.) in mixed stands was influenced by the presence of residual trees. Fourteen paired plots with and without residual trees were examined in a retrospective...
Resource Type:: Masters Thesis

Growth and yield, structure, composition, and soil compaction in a Western Oregon Douglas-fir forest after 35 years of modified selection thinning

Creator:: Stringer, Darin S.
Abstract:: Modified selection thinning has been utilized by some non-industrial foresters in Douglas-fir forests of Western Oregon and Washington for at least 35 years. This silvicultural strategy has not been tested, but has often been associated with reduced volume production and other undesirable effects. It continues to be used on many...
Resource Type:: Masters Thesis

Nutrient and tannin concentrations of shrub leaves in managed and unmanaged forests of the Oregon Coast Range : implications for herbivores

Creator:: Lange, Karen M.
Abstract:: Many herbivores of the Pacific Northwest rely on forest understory shrub leaves for a source of nitrogen, energy, and moisture. I measured nitrogen, protein-binding capacity, and condensed tannin concentration as indicators of available nitrogen; cell wall constituents and lignin as indicators of available energy; and moisture concentration in young and...
Resource Type:: Masters Thesis

Terrestrial amphibian distribution, habitat associations and downed wood temperature profiles in managed headwater forests with riparian buffers in the Oregon Coast Range

Creator:: Kluber, Matthew R.
Abstract:: Western forests have become increasingly fragmented landscapes dominated by young stands. Given that western Oregon forests largely consist of headwater systems, there is a need to better understand how headwater forest taxa and their habitats are impacted by forest management practices. Several amphibian species associated with forested headwater systems have...
Resource Type:: Masters Thesis
Full Text:: in Managed Headwater Forests with Riparian Buffers in the Oregon Coast Range Abstract approved

The effects of thinning on forest-floor small mammals in the Coast Range of Oregon

Creator:: Larson, David J.
Abstract:: Thinning of young Douglas-fir forests has the potential to enhance structural diversity and improve habitat for wildlife. I examined the effects of thinning and thinning intensity on abundance and demographic characteristics of forest-floor small mammals in the Coast Range of Oregon 5 and 6 years after thinning had occurred. Thinning...
Resource Type:: Masters Thesis
Full Text:: Coast Range of Oregon by David J. Larson A THESIS submitted to Oregon State University in

Climatic and physiographic controls on peakflow generation in the western Cascades, Oregon

Creator:: Perkins, Reed
Abstract:: Despite the importance of rain and snowmelt in causing peakflows in the Pacific Northwest, the interactive effects of a snowpack and watershed physiography on streamflow are largely undocumented. This study investigated the influence of soil and snowpack moisture on peakflow hydrograph shape in three small (< 60 ha) control sub-watersheds...
Resource Type:: Dissertation

Calcium-oxalate in sites of contrasting nutrient status in the Coast Range of Oregon

Creator:: Dauer, Jenny M.
Abstract:: Calcium (Ca) is an essential macronutrient that is increasingly recognized as a biogeochemical factor that influences ecosystem structure and function. Progress in understanding the sustainability of ecosystem Ca supply has been hampered by a lack of information on the various forms and pools of Ca in forest ecosystems. In particular,...
Resource Type:: Dissertation
Full Text:: Reserved Calcium-oxalate in Sites of Contrasting Nutrient Status in the Oregon Coast Range by

Forest management for the North American pine mushroom (Tricholoma magnivelare (Peck) Redhead) in the southern Cascade Range

Creator:: Weigand, James F.
Abstract:: Analysis of import trade since 1976 shows that forests of the Pacific Northwest provide Japan with the largest share of pine mushrooms (Tricholoma spp.) outside of East Asia. To determine whether North American pine mushrooms (Tricholoma magnivelare (Peck) Redhead) merit more intensive management in the southern Cascade Range, a major...
Resource Type:: Dissertation

ScholarsArchive@OSU

Establishment and growth of natural and planted conifers ten years after overstory thinning and vegetation control in 50-year-old Douglas-fir stands

Disturbance and landscape history as a reference for evaluating forest management effects at a regional scale : examples from the Coast Range of Oregon, USA

Effects of residual trees on growth of young to mature Douglas-fir and western hemlock in the western central Oregon Cascades

Growth and yield, structure, composition, and soil compaction in a Western Oregon Douglas-fir forest after 35 years of modified selection thinning

Nutrient and tannin concentrations of shrub leaves in managed and unmanaged forests of the Oregon Coast Range : implications for herbivores

Terrestrial amphibian distribution, habitat associations and downed wood temperature profiles in managed headwater forests with riparian buffers in the Oregon Coast Range

The effects of thinning on forest-floor small mammals in the Coast Range of Oregon

Climatic and physiographic controls on peakflow generation in the western Cascades, Oregon

Calcium-oxalate in sites of contrasting nutrient status in the Coast Range of Oregon

Forest management for the North American pine mushroom (Tricholoma magnivelare (Peck) Redhead) in the southern Cascade Range

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