Index Catalog // ScholarsArchive@OSU

Growth and structure of three adjacent 22 year-old Douglas-fir stands in the Oregon Coast Range

Creator:: Espinosa Bancalari, Miguel A.
Abstract:: In the Oregon Coast Range, total biomass and biomass increment, leaf area, the relationship between leaf area and sapwood area, and patterns of growth and form of individual trees, were studied in 40 Douglas-fir (Pseudotsuga menziesfi (Mirb.) Franco) trees from three adjacent 22 year-old plantations that had developed at different...
Resource Type:: Dissertation

Distribution and growth of advance Douglas-fir regeneration in commercially thinned stands in the Oregon Coast Range

Creator:: Beer, Louis W.
Abstract:: This study examined the abundance, size, growth, and age of advance regeneration Douglas-fir, beneath an eighty year-old overstory at a single site on plots subjected to different overstory thinning treatments. Treatments consisted of keeping overstory basal area within upper and lower limits for periods of 12-17 years which, depending upon...
Resource Type:: Masters Thesis

Understory vegetation effects on soil nitrogen and soil carbon in thinned and unthinned Douglas-fir forests

Creator:: Geyer, Eric A.
Abstract:: The optimum goal of forest management is to foster long-term productivity and ecological integrity while maintaining or increasing short-term growth and yield through sustainable practices. Understory vegetation plays a definite role in forest functions through nutrient cycling and habitat provisions. The objective of this study was to determine how salal,...
Resource Type:: Masters Thesis

Generation of an animation interface for ORGANON

Creator:: Hanus, Mark L.
Abstract:: The focusing of public attention on the practices of forest managers has resulted in the need for new tools to help explain the results of these practices. The traditional tools of tables and graphs of numerical values require a significant investment in learning the forestry profession. Once the investment is...
Resource Type:: Masters Thesis

Functional relationships among songbirds, arthropods, and understory vegetation in Douglas-fir forests, western Oregon

Creator:: Hagar, Joan C.
Abstract:: Arthropods are important food resources for birds. Forest management activities can influence shrub-dwelling arthropods by affecting the structure and composition of understory shrub communities. Changes in abundance and species composition of arthropod communities in turn may influence the distribution and abundance of insectivorous birds. I examined relationships among bird abundance,...
Resource Type:: Dissertation

Tree seedling establishment on heterogenous microsites in Douglas-fir forest canopy gaps

Creator:: Gray, Andrew N.
Abstract:: Tree seedling establishment and growth were studied in experimental canopy gaps to determine the effect of structural and environmental heterogeneity on species dynamics within mature and old-growth Douglas-fir forests in the Cascades of central Oregon and southern Washington. Factors examined included forest age, gap size, within-gap position. substrate, year of...
Resource Type:: Dissertation

Growth of plantation conifers and whiteleaf manzanita in southwest Oregon

Creator:: Hanson, Thomas J. (Thomas Jeffrey)
Abstract:: Southwest Oregon presents an environment of hot dry summers, cool moist winters, and rocky, shallow soils. The establishment of conifer plantations in this region presents challenging problems for initial seedling survival and subsequent growth. Three areas of concern include early conifer growth after seedling establishment, growth of competing hardwoods within...
Resource Type:: Dissertation

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

Structural development of late successional forests in the central Oregon Coast Range : abundance, dispersal, and growth of western hemlock (Tsuga heterophylla) regeneration

Creator:: Schrader, Barbara A.
Abstract:: Patterns of western hemlock regeneration were studied in relation to forest structural development and environment in the Oregon Coast Range. Density of western hemlock seedlings was examined across the climatic gradient from cool, moist coastal areas to the seasonally hot and dry Willamette Valley Margin. Seedling densities were most strongly...
Resource Type:: Dissertation

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

ScholarsArchive@OSU

Growth and structure of three adjacent 22 year-old Douglas-fir stands in the Oregon Coast Range

Distribution and growth of advance Douglas-fir regeneration in commercially thinned stands in the Oregon Coast Range

Understory vegetation effects on soil nitrogen and soil carbon in thinned and unthinned Douglas-fir forests

Generation of an animation interface for ORGANON

Functional relationships among songbirds, arthropods, and understory vegetation in Douglas-fir forests, western Oregon

Tree seedling establishment on heterogenous microsites in Douglas-fir forest canopy gaps

Growth of plantation conifers and whiteleaf manzanita in southwest Oregon

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

Structural development of late successional forests in the central Oregon Coast Range : abundance, dispersal, and growth of western hemlock (Tsuga heterophylla) regeneration

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

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

Language

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search