Index Catalog // ScholarsArchive@OSU

The ecological legacy of Indian burning practices in southwestern Oregon

Creator:: Carloni, Kenneth R.
Abstract:: Two research questions are posed: (1) How have ecosystem conditions changed through time in southwestern Oregon? (2) How have culture-driven and climate-driven processes contributed to ecosystem change in southwestern Oregon? A brief introduction to the Little River study area is followed by a cultural and ecological history of the watershed....
Resource Type:: Dissertation
Full Text:: Brauner for his insights into the life and times of southwest Oregon’s native peoples, and Steve

Water movement in the stem xylem in relation to xylem specific conductivity in four hardwood species

Creator:: Fallas-Cedeño, Lottie
Abstract:: In deciduous species, water exits stems mainly through leaf traces attached to the outer growth ring and yet we know that water ascends throughout the entire cross-section of the sapwood. There is an increasing amount of information on sap flow and sapwood hydraulic properties from separate studies, but little information...
Resource Type:: Masters Thesis

Ecosystem effects of vegetation removal in coastal Oregon Douglas-fir experimental plantations : impacts on ecosystem production, tree growth, nutrients, and soils

Creator:: Yildiz, Oktay
Abstract:: Effects of partial understory removal on belowground and aboveground ecosystem properties were investigated in 5 and 15 yr old Douglas-fir (Pseudotsuga menziesll (Mirb.) Franco) experimental plantations in western Oregon. Seedling survival was not affected by understory removal at age 5 yr. But through age 15 yr, understory removal increased seedling...
Resource Type:: Dissertation
Full Text:: . Steve Radosevich, John Baham, and Bruce Rettig for their guidance and support. Dr. Robert Wagner

Factors influencing growth of young Douglas-fir and red alder in the Oregon Coast Range : interference, nitrogen availability, and animal damage

Creator:: Fuentes-Rodríquez, Laura Angélica
Abstract:: Red alder (Alnus rubra Bong.) is a common associate and a potentially severe competitor of Douglas-fir (Pseudotsuga menziesii var. menziesii [Mirb.] Franco) in the Oregon Coast Range. However, because it fixes nitrogen and increases rates of soil nutrient cycling, red alder has the potential to benefit Douglas-fir. The objective of...
Resource Type:: Masters Thesis

The timber harvesting behavior of family forest owners

Creator:: Butler, Brett J.
Abstract:: To increase our understanding of the timber harvesting behavior of family forest owners, I developed theoretical and empirical timber harvesting models for family forest owners in the southeastern United States. An individual-choice model was the basis for the models. Family forest owners were modeled as utility-maximizers who made harvesting decisions...
Resource Type:: Dissertation
Full Text:: , along with graduate committee members, including Ralph Alig, Sheila Cordray, and Steve Radosevich

The phytotoxic effects of herbicide and adjuvant application by physiological timing on the woody shrub salal (Gaultheria shallon)

Creator:: Downs, Theodore
Abstract:: Salal is plant species that is native to forestland throughout the PNW and northern California that has been identified as a competitor to early crop tree development. This study consisted of a field and a radioisotope laboratory study to test four commonly used herbicides on salal (imazapyr, triclopyr, glyphosate, and...
Resource Type:: Masters Thesis
Full Text:: Tappeiner, Dr. Douglas Maguire, Dr. Steven Radosevich, Dr. James Boyle, and Dr. Thomas Adams for their

Dynamics of size structures : simulation and experiments in seedling stands of Pseudotsuga menziesii and Fraxinus mandshurica

Creator:: Petersen, Terry D.
Abstract:: Computer simulations and experiments were used to determine the basis for skewness and inequality in size structures (frequency distributions of Individual plant sizes) prior to self-thinning mortality. In simulated stands, density-dependent neighborhood heterogeneity caused variability in the growth rate of individuals with the same size, and such variability caused skewness...
Resource Type:: Dissertation

The role and function of fruit trees and fruit tree-based agroforestry systems in a highland watershed in northern Thailand

Creator:: Withrow-Robinson, Bradford A.
Abstract:: Field studies were conducted from 1996 to 1998 in three villages in a Highland watershed in Mae Hong Son Province, northern Thailand. The objectives of the study were to classify and define the fruit-based agroforestry cropping system and investigate management activities used by villagers. In the first part of the...
Resource Type:: Dissertation

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

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

ScholarsArchive@OSU

The ecological legacy of Indian burning practices in southwestern Oregon

Water movement in the stem xylem in relation to xylem specific conductivity in four hardwood species

Ecosystem effects of vegetation removal in coastal Oregon Douglas-fir experimental plantations : impacts on ecosystem production, tree growth, nutrients, and soils

Factors influencing growth of young Douglas-fir and red alder in the Oregon Coast Range : interference, nitrogen availability, and animal damage

The timber harvesting behavior of family forest owners

The phytotoxic effects of herbicide and adjuvant application by physiological timing on the woody shrub salal (Gaultheria shallon)

Dynamics of size structures : simulation and experiments in seedling stands of Pseudotsuga menziesii and Fraxinus mandshurica

The role and function of fruit trees and fruit tree-based agroforestry systems in a highland watershed in northern Thailand

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

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

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search