Index Catalog // ScholarsArchive@OSU

Cloning and characterization of GRASP, a novel retinoic acid-induced gene from P19 embryonal carcinoma cells

Creator:: Nevrivy, Daniel
Abstract:: Retinoic acid (RA) exerts important effects in the processes of vertebrate development, cellular growth and differentiation, and homeostasis. However, the mechanisms of action of RA in the control of cellular and developmental processes are incompletely understood, as the retinoid target genes have not been fully characterized. The goal of these...
Resource Type:: Dissertation
Full Text:: Cells. Abstract approved: Mark E. Leid Retinoic acid (RA) exerts important effects in the processes

Early forest succession following clearcuts in western Oregon : patterns and abiotic controls

Creator:: Yang, Zhiqiang
Abstract:: Historical aerial photos were used to examine the early phase of forest succession after stand replacement disturbance, covering the Coast Ranges Province (CRP) and the western Cascades Province (WCP) of western Oregon. The study consisted of two components: characterizing the pattern of forest succession in western Oregon; analyzing the influence...
Resource Type:: Dissertation

Environmental variability and system heterogeneity in terrestrial biogeochemical models

Creator:: Sierra, Carlos Alberto
Abstract:: Ecosystems are highly heterogeneous systems subjected to important levels of environmental variability; however, it is common in terrestrial biogeochemical models to assume homogeneous properties of the elements of the system or constant environmental conditions. For some processes, heterogeneity in these models is treated very simplistically, but there is not much...
Resource Type:: Dissertation
Full Text:: Variability and System Heterogeneity in Terrestrial Biogeochemical Models Abstract approved: Mark E. Harmon

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

Impacts of forest-to-agriculture conversion on aboveground and soil carbon and nitrogen stocks along a bioclimatic gradient in Costa Rica

Creator:: Jobse, Judith C.
Abstract:: Tropical forest-to-agriculture conversions contribute to ~20% of contemporary global C emissions. Current global C flux estimates assume C is lost from vegetation and soils over time due to this conversion, and that C stocks in agricultural lands are fairly uniform across the tropics. Global C stock and flux estimates may...
Resource Type:: Dissertation
Full Text:: : W. Daniel Edge Mark E. Harmon Tropical forest-to-agriculture conversions contribute to ~20

Modeling nitrogen fixation in dead wood

Creator:: Hicks, William Thomas
Abstract:: A mechanistic simulation model of nitrogen fixation in dead wood was developed to help synthesize knowledge, develop hypotheses, and estimate rates of nitrogen fixation in the Pacific Northwest. In this model nitrogen fixation is directly controlled by log substrate, temperature, moisture, and oxygen content. Respiration and diffusion of oxygen indirectly...
Resource Type:: Dissertation

Nitrogen and phosphorus dynamics during decomposition of multiple litter types in temperate coniferous forests

Creator:: van Huysen, Tiffany L.
Abstract:: Litter nutrient dynamics contribute significantly to biogeochemical cycling in forest ecosystems. These dynamics may be influenced by site attributes, litter nutrient concentrations, and soil nutrient availability either independently or synergistically. Litter nutrient dynamics were examined in two decomposition studies in temperate coniferous forests of Oregon. I used ¹⁵N-labelled litter of...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Mark E. Harmon Steven S. Perakis Litter nutrient dynamics contribute significantly to

Numerical simulation of anaerobic reductive dechlorination of CAHs in continuous flow systems

Creator:: Mustafa, Nizar Ahmad
Abstract:: Halogenated organic compounds have had widespread and massive applications in industry, agriculture, and private households, for example, as degreasing solvents, flame retardants and in polymer production. They are released to the environment through both anthropogenic and natural sources. The most common chlorinated solvents present as contaminants include tetrachloroethene (PCE, perchloroethene)...
Resource Type:: Dissertation
Full Text:: . committee members, Mark Dolan, Jack Istok, Brian Wood and John Baham for his role as Graduate Council

Nutritional ecology of cervids in old-growth forests in Olympic National Park, Washington

Creator:: Leslie, David M.
Abstract:: Nutritional ecology of unhunted and sympatric populations of Roosevelt elk, Cervus elaphus roosevelti, and Columbian black-tailed deer, Odocoileus hemionus columbianus, was investigated in old-growth forests of the Hoh Valley in Olympic National Park, Washington, from September 1979 to November 1981. Seasonal diets of both cervids generally were comprised of common...
Resource Type:: Dissertation
Full Text:: for Privacy Edward E. Starkey Nutritional ecology of unhunted and sympatric populations of

Patterns of stem respiration within tree, with age, and among species in Pacific Northwest trees

Creator:: Pruyn, Michele L.
Abstract:: An increment core-based, laboratory method was used to measure tissue-level respiration under controlled temperature (termed respiratory potential) of eleven tree species from three age classes. Respiratory potential was calculated on a basis of core dry-mass, volume, carbon, or nitrogen content and live bole volume. Methods tests suggested that core carbon...
Resource Type:: Dissertation

ScholarsArchive@OSU

Cloning and characterization of GRASP, a novel retinoic acid-induced gene from P19 embryonal carcinoma cells

Early forest succession following clearcuts in western Oregon : patterns and abiotic controls

Environmental variability and system heterogeneity in terrestrial biogeochemical models

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

Impacts of forest-to-agriculture conversion on aboveground and soil carbon and nitrogen stocks along a bioclimatic gradient in Costa Rica

Modeling nitrogen fixation in dead wood

Nitrogen and phosphorus dynamics during decomposition of multiple litter types in temperate coniferous forests

Numerical simulation of anaerobic reductive dechlorination of CAHs in continuous flow systems

Nutritional ecology of cervids in old-growth forests in Olympic National Park, Washington

Patterns of stem respiration within tree, with age, and among species in Pacific Northwest trees

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