Index Catalog // ScholarsArchive@OSU

Remote sensing of radiation intercepted by vegetation to estimate aboveground net primary production across western Oregon

Creator:: Law, Beverly E.
Abstract:: Remote sensing of variables necessary to estimate net primary production of vegetation over large temporal and spatial scales has been a goal of climate change research. This thesis consists of two studies that address the reliability of satellite and airborne sensors to quantify a basic component of all production models,...
Resource Type:: Dissertation

Effectiveness of pheromone mating disruption for the ponderosa pine tip moth, Rhyacionia zozana (Kearfott) (Lepidoptera: Tortricidae), and its influence on the associated parasite complex

Creator:: Niwa, Christine Gail
Abstract:: The importance of pheromones in insect control relies both on their ability to reduce pest populations and on their relatively benign effects on nontarget organisms. This study was conducted to test the effectiveness of a pheromone application for mating disruption of the ponderosa pine tip moth, Rhyacionia zozana (Kearfott), and...
Resource Type:: Dissertation
Full Text:: Schowalter, and the members of my committee, Rene Feyereisen, Dave Perry, and David Birkes, for their

The importance of maintenance respiration by living cells in the sapwood of subalpine conifers

Creator:: Ryan, Michael G.
Abstract:: Xylem conducting tissue or sapwood is an important storage organ for water, carbohydrates, and nutrients, and this storage helps trees accommodate environmental change. However, the living ray parenchyma cells in sapwood, which store the carbohydrates and nutrients, require energy for maintenance. I examined how sapwood maintenance costs vary among species,...
Resource Type:: Dissertation

Interspecific competition in young Douglas-fir plantations of the Oregon coast range

Creator:: Wagner, Robert Gordon
Abstract:: Improving vegetation management decisions in Pacific Northwest forests requires a better understanding of the interactions between planted conifers and associated vegetation. A practical index of interspecific competition, and quantitative models predicting conifer performance from such an index are particularly needed. To meet this need, neighborhood models of interspecific competition were...
Resource Type:: Dissertation

Modeling riparian zone processes : biomass production and grazing

Creator:: Korpela, Edwin J.
Abstract:: Seasonal trends in forage production and environmental parameters for five plant community types within a northeastern Oregon riparian zone were described and modeled using correlation and path analysis. Wet meadows produced the greatest amount of herbage biomass, followed by moist bluegrass meadows, gravel bars, forests and dry bluegrass meadows. Trends...
Resource Type:: Dissertation
Full Text:: , Doug Johnson, Dave McIntire and Dave Perry. Their support and patience is greatly appreciated. A very

Response of ponderosa pine forests in central Oregon to prescribed underburning

Creator:: Landsberg, Johanna Dobrot
Abstract:: Tree growth and soil nutrient responses to prescribed underburning were determined for a period of up to 12 years at four sites in northcentral and central Oregon ponderosa pine stands (Pinus ponderosa Dougl. ex Laws). Differences reported are significant at a = 0.10. During the first 4-growing-season-measurement period after underburning,...
Resource Type:: Dissertation

Effects of seed characters and competitive environment on two-year performance of open-pollinated Douglas-fir families

Creator:: St. Clair, John Bradley
Abstract:: Ungerminated seed and recent germinants from 39 open-pollinated Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) families were planted in each of three competitive environments in order to determine the degree to which growth differences among families are influenced by competitive environment, seed weight, and date of emergence. The three competitive...
Resource Type:: Dissertation

Competitive interactions between Douglas-fir and red alder seedlings : growth analysis, resource use, and physiology

Creator:: Shainsky, Lauri J.
Abstract:: Competitive interactions between Douglas-fir seedlings (Pseudotsuga menziesii), and seedlings of a nitrogen-fixing hardwood associate, red alder (Alnus rubra), were investigated in an addition series experiment. The primary objective of the research was to identify and quantify key processes underlying intra- and interspecific competitive interactions of Douglas-fir and red alder seedlings....
Resource Type:: Dissertation

Spatio-temporal pattern analysis of managed forest landscapes : a simulation approach

Creator:: Li, Habin
Abstract:: This study dealt with research problems at the landscape level. The objectives of this thesis were to develop tools to study and characterize landscapes and to interface with a geographic information system (GIS), to evaluate landscape indices, and to examine development of forest cutting patterns under different cutting methods and...
Resource Type:: Dissertation

Water stress, fertilization and light effects on the growth of nodulated, mycorrhizal red alder seedlings

Creator:: Koo, Chang Duck
Abstract:: Red alder (Alnus rubra Bong.) seedlings fertilized with NH4NO3 or inoculated with a pure culture Fran/cia and inoculated with live or dead spores of the mycoirhizal fungus Alpova diplophloeus (Zeller & Dodge) Trappe & Smith were grown in a growth chamber or in a greenhouse for six months Frankia inoculation...
Resource Type:: Dissertation

ScholarsArchive@OSU

Remote sensing of radiation intercepted by vegetation to estimate aboveground net primary production across western Oregon

Effectiveness of pheromone mating disruption for the ponderosa pine tip moth, Rhyacionia zozana (Kearfott) (Lepidoptera: Tortricidae), and its influence on the associated parasite complex

The importance of maintenance respiration by living cells in the sapwood of subalpine conifers

Interspecific competition in young Douglas-fir plantations of the Oregon coast range

Modeling riparian zone processes : biomass production and grazing

Response of ponderosa pine forests in central Oregon to prescribed underburning

Effects of seed characters and competitive environment on two-year performance of open-pollinated Douglas-fir families

Competitive interactions between Douglas-fir and red alder seedlings : growth analysis, resource use, and physiology

Spatio-temporal pattern analysis of managed forest landscapes : a simulation approach

Water stress, fertilization and light effects on the growth of nodulated, mycorrhizal red alder seedlings

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