Index Catalog // ScholarsArchive@OSU

Nitrogen dynamics across silvicultural canopy gaps in young forests of western Oregon

Creator:: Thiel, Aaron L.
Abstract:: Silvicultural canopy gaps are emerging as an alternative management tool to accelerate development of complex forest structure in young, even-aged forests of the Pacific Northwest. I investigated patterns of nitrogen (N) availability along transects through 0.1 and 0.4 ha silvicultural gaps in three 50-70 year old Douglas-fir forests of western...
Resource Type:: Masters Thesis
Full Text:: Steven S. Perakis Silvicultural canopy gaps are emerging as an alternative management tool to

Tree species-soils relationships in old-growth forests of the Oregon Coast Range

Creator:: Cross, Alison
Abstract:: Tree species directly and indirectly affect soil nutrient cycles. I sought to characterize soils and foliage associated with four common canopy tree species (Douglas-fir, western hemlock, western redcedar, and bigleaf maple) in mixed-species old-growth forests of the Oregon Coast Range and to determine whether and how soils differ among the...
Resource Type:: Masters Thesis
Full Text:: : __________________________________________________________________ Steven S. Perakis Tree species directly and indirectly affect soil nutrient cycles. I

Genome scale transcriptome analysis and development of reporter systems for studying shoot organogenesis in poplar

Creator:: Bao, Yanghuan
Abstract:: Vegetative propagation allows the amplification of selected genotypes for research, breeding, and commercial planting. However, efficient in vitro regeneration and genetic transformation remains a major obstacle to research and commercial application in many plant species. Our aims are to improve knowledge of gene regulatory circuits important to meristem organization, and...
Resource Type:: Masters Thesis

Non-linear nitrogen dynamics and calcium depletion along a temperate forest soil nitrogen gradient

Creator:: Sinkhorn, Emily R.
Abstract:: Understanding how N availability influences base cation stores is critical for long-term ecosystem sustainability. Indices of nitrogen (N) availability and the distribution of nutrients in plant biomass, soil, and soil water were examined across ten young, unpolluted Douglas-fir (Pseudotsuga menziesii) stands in the Oregon Coast Range spanning a three-fold soil...
Resource Type:: Masters Thesis
Full Text:: : __________________________________________________________________ Steven S. Perakis Understanding how N availability influences base cation stores is

Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

Creator:: Giesen, Thomas William
Abstract:: Fire is a major disturbance process in many forests. Long-term studies of the biogeochemical effects of fires, especially on soils, are very rare. Consequently, long-term effects of fire on soils are often hypothesized from short-term effects. In a chronosequence study, I studied 24 western Cascades (Oregon) forest stands thought to...
Resource Type:: Masters Thesis
Full Text:: Severe Fire in a Western Cascades Forest Landscape Abstract approved: Steven S. Perakis

Giving color to Oregon's gray water market : an analysis of price determinants for water right

Creator:: Landry, Clay J.
Abstract:: Many parts of the West are experiencing substantial growth pressures that have increased the demand for water. These new demands come at a time when most of the water in the West has been fully appropriated by traditional uses such as agriculture, mining, and industry. Some attempts are being made...
Resource Type:: Masters Thesis
Full Text:: ., 1986, p. 10-11. One final consideration when valuing water for municipal use is that the price paid

A domain-specific embedded language for probabilistic programming

Creator:: Kollmansberger, Steven
Abstract:: Functional programming is concerned with referential transparency, that is, given a certain function and its parameter, that the result will always be the same. However, it seems that this is violated in applications involving uncertainty, such as rolling a dice. This thesis defines the background of probabilistic programming and domain-specific...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Steven Kollmansberger for the degree of

Seasonal movement patterns and habitat use of westslope cutthroat trout in two headwater tributary streams of the John Day River

Creator:: Starcevich, Steven J.
Abstract:: Radiotelemetry was used to study the seasonal movements and habitat use of adult westslope cutthroat trout Oncorhynchus clarki lewisi in Roberts Creek and Rail Creek, headwater tributaries of the John Day River, Oregon, from September 2000 to December 2001. The objectives were to (1) describe adult cutthroat trout life history...
Resource Type:: Masters Thesis
Full Text:: Steven J. Starcevich for the degree of Master of Science in Fisheries Science presented on December 1

Reproductive isolation and interspecific hybridization in the threatened species, Sidalcea nelsoniana

Creator:: Gisler, Steven D.
Abstract:: In addition to its longstanding recognition as an influential evolutionary process, interspecific hybridization is increasingly regarded as a potential threat to the genetic integrity and survival of rare plant species, manifested through gamete wasting, increased pest and disease pressures, outbreeding depression, competitive exclusion, and genetic assimilation. Alternatively, hybridization has also...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Steven D. Gisler for the

Comparitive snow accumulation and melt during rainfall in forest and clearcut plots in western Oregon

Creator:: Berris, Steven Neil
Abstract:: A study was conducted to compare snow accumulation and melt during rainfall in adjacent forest and clearcut plots in the transient snow zone of the western Cascade Range in Oregon. Snow accumulation differences were determined by comparing the water equivalents of forest and clearcut snowpacks. During rain-on-snow periods, energy balances...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Steven Neil Berris for the

ScholarsArchive@OSU

Nitrogen dynamics across silvicultural canopy gaps in young forests of western Oregon

Tree species-soils relationships in old-growth forests of the Oregon Coast Range

Genome scale transcriptome analysis and development of reporter systems for studying shoot organogenesis in poplar

Non-linear nitrogen dynamics and calcium depletion along a temperate forest soil nitrogen gradient

Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

Giving color to Oregon's gray water market : an analysis of price determinants for water right

A domain-specific embedded language for probabilistic programming

Seasonal movement patterns and habitat use of westslope cutthroat trout in two headwater tributary streams of the John Day River

Reproductive isolation and interspecific hybridization in the threatened species, Sidalcea nelsoniana

Comparitive snow accumulation and melt during rainfall in forest and clearcut plots in western Oregon

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