Index Catalog // ScholarsArchive@OSU

Cost-efficient management of aquatic invasive species : application to New Zealand mudsnails in the Pacific Northwest

Creator:: Lim, Youngah
Abstract:: By affecting the ecological, pecuniary and aesthetic productivity of ecosystems, invasive species (IS) increase production and management costs to business, while straining public agencies' budgets with monitoring, enforcement and management efforts. Understanding invasion pathways or vectors, and identifying costs and benefits of alternative management strategies are critical to public and...
Resource Type:: Dissertation
Full Text:: mudsnails, Potamopyrgus antipodarum, (NZMS) in the Pacific Northwest (PNW) using data from a variety of

Identifying Quantitative Trait Loci for Resistance Against Stripe Rust and Septoria tritici blotch in Soft White Winter Wheat

Creator:: Cobertera, David
Abstract:: Stripe rust (Puccinia striiformis f. sp. tritici) and Septoria tritici blotch (Zymoseptoria tritici) are a constant and significant threat to wheat production, significantly reducing wheat quality and yield. Wheat is responsible for 20% of the world’s human calorie intake, and wheat production must increase to supply the demand of the...
Resource Type:: Dissertation
Full Text:: (PNW). Increasing stripe rust and STB resistance through plant breeding is the most cost-effective

Competition release and climate change effects on a moisture-demanding tree species in a dry system

Creator:: Seager, S. Trent
Abstract:: Climate change and the increase in meteorological drought have generated global concern over the persistence of ecosystems already in decline from decreased moisture. Evidence suggests dryland ecosystems have been more impacted by drought because of their tightly coupled growth-water relationships and high sensitivity to environmental shift. Removal of competing vegetation...
Resource Type:: Dissertation
Full Text:: quaking aspen (Populus tremuloides) stands within the dry forests of the Inland Pacific Northwest (PNW

Changes in grain quality and grain protein composition of winter wheat cultivars under different levels of soil nitrogen and water stress

Creator:: Saint Pierre, Carolina
Abstract:: Hard white winter (HVVW) wheat cultivars must have superior protein quality and consistent processing quality to be successful in the Asian market. New cultivars and management strategies are needed to produce HVVW grain for both bread and noodle applications from diverse environments in the US Pacific Northwest (PNW). This study...
Resource Type:: Dissertation
Full Text:: Northwest (PNW). This study investigated the variability in grain quality, grain protein content and

The influence of canopy structure and epiphytes on the hydrology of Douglas-fir forests

Creator:: Pypker, Thomas G.
Abstract:: Canopy structure has a significant impact on the canopy hydrology of Douglas-fir forests in the Pacific Northwest (PNW). Whole canopy rainfall interception was measured for young Douglas-fir forest and compared to an old-growth Douglas-fir forest. The old-growth forest had significantly greater canopy water storage capacity (5) and direct throughfall fraction...
Resource Type:: Dissertation
Full Text:: canopy hydrology of Douglas-fir forests in the Pacific Northwest (PNW). Whole canopy rainfall

Improving Projections of Tidal Marsh Persistence under Climate Change with Remote Sensing and Site-Specific Data

Creator:: Buffington, Kevin J.
Abstract:: Tidal marshes are dynamic ecosystems that are threatened by climate change and sea-level rise. To characterize baseline condition and historic climate sensitivities, and improve projections into the future, new methods are required that integrate data from the field and remote sensing platforms. Marsh elevation response models can be calibrated with...
Resource Type:: Dissertation
Full Text:: climate variation has not been explored in the Pacific Northwest (PNW). In Chapter 3 I explain how I

Evaluating Multi-objective Trade-offs in Mature Douglas-fir (Pseudotsuga menziesii) Stands of Western Oregon

Creator:: Williams, Neil G.
Abstract:: Contemporary forest management involves a more extensive and diverse suite of management objectives than was the case throughout much of the Twentieth Century. Heightened public and political awareness of local and global biodiversity decline, and interest in arresting these trends, has increased the emphasis on broad-based biodiversity conservation as an...
Resource Type:: Dissertation
Full Text:: , in the Pacific Northwest (PNW) of the United States. Whereas the ecology of old-growth Douglas-fir

Ecosystem Functions of Pacific Northwest Estuaries: The Role of Ocean and Watershed Drivers in Eelgrass and Coho Salmon Dynamics

Creator:: Magel, Caitlin L.
Abstract:: Interest is expanding for the potential role of estuaries, particularly seagrass and salt marsh habitats, to sequester carbon, mitigate ocean acidification, and support abundant fisheries. The important functions of estuaries are part of a broader set of ecosystem services, or benefits to humans, which are regulated by ocean and watershed...
Resource Type:: Dissertation
Full Text:: of ecosystem change in Pacific Northwest (PNW) estuaries. Chapters 2, 3, and 4 of my dissertation

Climate Change Impacts to Estuarine Hydrodynamics: Tools, Methodologies, and Predictions

Creator:: Parker, Kai A.
Abstract:: Coastal communities in the U.S. Pacific Northwest (PNW) are rapidly engaging with the idea that hazards and environmental pressures are changing and may be characteristically different in the near future. This has led to a need for scientific knowledge and tools that can help coastal communities prepare and build resilience...
Resource Type:: Dissertation
Full Text:: David F. Hill Coastal communities in the U.S. Pacific Northwest (PNW) are rapidly engaging with

Mapping disturbance interactions from earth and space : insect effects on tree mortality, fuels, and wildfires across forests of the Pacific Northwest

Creator:: Meigs, Garrett W.
Abstract:: Given the vital role of forest ecosystems in landscape pattern and process, it is important to quantify the effects, feedbacks, and uncertainties associated with forest disturbance dynamics. In western North America, insects and wildfires are both native disturbances that have influenced forests for millennia, and both are projected to increase...
Resource Type:: Dissertation
Full Text:: and fire events across the Pacific Northwest region (PNW). Through three related studies, I worked

An Integrated Approach to the Investigation of Age, Growth and Population Dynamics of Burrowing Thalassinidean Shrimps in a U.S. West Coast Estuary

Creator:: Bosley, Katelyn Marie
Abstract:: Two indigenous species of burrowing shrimp inhabit and often dominate the intertidal zone of estuaries along the US West Coast, the ghost shrimp, Neotrypaea californiensis, and the blue mud shrimp, Upogebia pugettensis. Both species are considered ecosystem engineers and play a role in maintaining estuarine health and ecosystem function. They...
Resource Type:: Dissertation
Full Text:: function. They also have a negative interaction with oyster production in Pacific Northwest (PNW

Potential carbon storage at the landscape scale in the Pacific Northwest, U.S.A.

Creator:: Smithwick, Erica Ann Hoffa
Abstract:: Estimates of potential carbon (C) storage can be used to constrain predictions of future carbon sequestration and to understand the degree to which disturbances, both natural aid anthropogenic, affect C storage. An upper bound on C storage in the Pacific Northwest (PNW) of the United States was estimated using field...
Resource Type:: Dissertation
Full Text:: anthropogenic, affect C storage. An upper bound on C storage in the Pacific Northwest (PNW) of the United

Life Cycle Assessment of Biomass for Generation of energy : Case Studies of Poplar Management in the Pacific Northwest of the U.S.A.

Creator:: Vasquez Sandoval, Marcia A.
Abstract:: A Life Cycle Assessment (LCA) of the production of poplar biomass grown under four management conditions in the Pacific Northwest (PNW) of the U.S.A. was conducted. While the extraction of fossil fuels and the subsequent generation of energy have environmental impacts, the alternative of extracting poplar biomass also has impacts...
Resource Type:: Dissertation
Full Text:: production of poplar biomass grown under four management conditions in the Pacific Northwest (PNW) of the

From the Shoreface to the Foredunes : Coastal Morphodynamics Across the Land-Sea Interface

Creator:: Cohn, Nicholas T.
Abstract:: Coastal flooding and erosion are major concerns for low lying coastal communities -- particularly in light of accelerated sea level rise and climate change. To improve quantitative understanding of the physical drivers of both flooding and coastal landscape change, this dissertation explores coastal morphodynamics bridging the land-sea interface on modally...
Resource Type:: Dissertation
Date Created:
Full Text:: Northwest (PNW). Both new and existing morphologic datasets spanning from the shoreface to the foredunes, at

Responses of forest understory plants to burial by volcanic tephra from Mount St. Helens, Washington

Creator:: Antos, Joseph A.
Abstract:: The effects of burial by tephra (volcanic aerial ejecta) on forest understory plants were examined northeast of Mount St. Helens, Washington, in the area where the 18 May 1980 eruption deposited tephra but did not destroy canopy trees. At six sites along a tephra depth gradient from 2-15 cm, understory...
Resource Type:: Dissertation
Full Text:: through tephra deposits exceeding 10 cm in depth. Examination of such plants of 109 species indicated

Three Essays on the Economics of Habitat and Landscape Restoration

Creator:: Nguyen, Tu
Abstract:: Natural landscapes around the world have experienced serious loss and degradation, which negatively impacts ecosystem service provision by these landscapes. As a result, there have been serious investments to restore natural capital. However, restoration faces complex trade-offs, such as that between restoration quality, or how closely the restored landscapes resembles...
Resource Type:: Dissertation
Full Text:: coastal dune landscapes in the Pacific Northwest (PNW). Sandy beaches and coastal dunes in

Food Insecurity in the Community College, a Phenomenological Inquiry: The Lived Experience of Students Using a Campus Food Pantry

Creator:: Wells-Edwards, Andrea L.
Abstract:: The purpose of this study was to understand the lived experience of students to discern the impact of their interaction with the food pantry. This knowledge may, in turn, influence future food pantry methods and wider policy, both at PNW College and more broadly. Not only does student hunger have...
Resource Type:: Dissertation
Full Text:: , influence future food pantry methods and wider policy, both at PNW College and more broadly. Not only does

The Genetics of Larval Fitness in the Pacific Oyster: Responses to Acidified Seawater and Temporally Dynamic Selection Processes

Creator:: Durland, Evan R.
Abstract:: The Pacific Oyster (Crassostrea gigas) is one of the most economically and ecologically significant shellfish species worldwide. In the Pacific Northwest United States (PNW), the sustainability oyster stocks is increasingly threatened by ocean acidification (OA), which has had significant negative effects on the aquaculture industry in this region over the...
Resource Type:: Dissertation
Full Text:: States (PNW), the sustainability oyster stocks is increasingly threatened by ocean acidification (OA

Advancing Understanding of Changes in the Cryosphere of the Western United States and Alaska: A Case for the Importance of Spatial and Temporal Scaling

Creator:: Roberts-Pierel, Benjamin M.
Abstract:: The global cryosphere, defined as the world’s ice and snow covered regions, is a crucial water source for society and ecosystem functions, as well as an important regulator of the earth’s energy budget. Melt from glaciers and seasonal snow cover provides water for more than a sixth of the world’s...
Resource Type:: Dissertation
Full Text:: Northwest (PNW) at a variety of spatial scale and spatial aggregation choices, and, finally, examining

Asulam for tansy ragwort control in alfalfa : field efficacy and selectivity factors

Creator:: Harper, Delbert Ray
Abstract:: Tansy ragwort (Senecio jacobaea L. ) is a poisonous weed which infests alfalfa fields in western Oregon. Studies were conducted to evaluate the effectiveness of asulam (methyl sulfanilylcarbamate)for control of tansy ragwort in alfalfa and to elucidate factors responsible for its selectivity. In seven replicated field trials in 1973 and...
Resource Type:: Dissertation
Full Text:: using the least-squares method. Estimated GR 50 values for alfalfa were 109 and 55 kg/ha, without and

Ecophysiology of Marine Bivalves : Physiological Rate Processes in Dynamic Environments

Creator:: Gray, Matthew W.
Abstract:: Marine bivalves are globally recognized as ecologically and commercially valuable species and, for over a century, researchers have been studying their feeding, digestion and other related physiological processes. These studies have shown that marine bivalves have complex feeding and particle processing behaviors to maximize growth in dynamic environmental conditions. Additionally,...
Resource Type:: Dissertation
Full Text:: . gigas as the now dominant species in many PNW estuaries and seasonally much greater than the services

The water and energy dynamics of an old-growth seasonal temperate rainforest

Creator:: Link, Timothy E.
Abstract:: In the Pacific Northwest (PNW), concern about the impacts of climate and land cover change on water resources, flood-generating processes, and ecosystem dynamics emphasize the need for a mechanistic understanding of the interactions between forest canopies and hydrological processes. A detailed measurement and modeling program during the 1999 and 2000...
Resource Type:: Dissertation
Full Text:: . Abstract approved: Michael H. Unsworth I Danny Marks In the Pacific Northwest (PNW), concern about the

Influence of Soft Wheat Characteristics on Quality of Batter-based Products

Creator:: Fajardo Centeno, Carlos A.
Abstract:: Wheat is a globally traded staple crop. Wheat is important in human diets because of its agronomic adaptability, physical characteristics, functionality for the production of leavened products and nutritional value. Two significant characteristics make wheat an important staple food-crop. First, the proteins present in wheat endosperm have attributes that enable...
Resource Type:: Dissertation
Full Text:: . Pacific Northwest (PNW) climatic conditions favor production of soft wheat. Three soft wheat types are

Long-term Impacts of Nitrogen Fertilizer, Tillage and Crop Residue on Soil and Plant Nutrients in Winter Wheat Cropping Systems Under Dryland Conditions

Creator:: Shiwakoti, Santosh
Abstract:: Agricultural practices influence the nutrient dynamics of soil and plants, which may take more than a decade to be expressed in the drylands. The nutrient supplying capacity of soil is a crucial component of sustainable agriculture, and hence, this study can play an important role in policy making for the...
Resource Type:: Dissertation
Full Text:: cropping system of the inland Pacific Northwest (PNW). The studies were carried out on the three existing

Wheat (Triticum aestivum) Kernel Polymers as Breeding Targets for Improved End-Use Quality

Creator:: Trittinger, Susanne
Abstract:: Wheat is a staple food crop with many applications. The composition and quantity of major and minor flour components greatly influence functional dough properties, processing quality, and end-use suitability. Seven to 15% of the weight of wheat flour is protein and the gluten proteins comprise 80-85% of that. The gluten...
Resource Type:: Dissertation
Full Text:: . Wheat grown in the Pacific Northwest (PNW) often produces high grain yield but low grain protein. Thus

Wave runup : Physics, variability, and societal impacts

Creator:: García Medina, Gabriel
Abstract:: The U.S. Pacific Northwest is home to one of the most extreme wave climates in the world with waves of 10 m in height arriving to the coast approximately each year. With an average water temperature of 12℃, the beaches in the region are too cold to go on a...
Resource Type:: Dissertation
Full Text:: study of other properties of wave runup. One characteristic of the mildly sloping beaches of the PNW is

Investigating the Use of Online Degree Audit Technology and Understanding the Student Experience

Creator:: Hopf, Samantha NJ.
Abstract:: Academic advising is an integral step in a community college students higher education journey, and as such must be supported with any tools available to increase student success. Technology is becoming more highly integrated into the academic advising process as are online tools which provide access to student records, course...
Resource Type:: Dissertation
Full Text:: tool and continuous enrollment of four consecutive terms at a PNW community college. This study used

Factors Influencing Streamflow Generation Processes in Rain-dominated, Coastal Watersheds in Oregon

Creator:: Pazdral, Rosemary
Abstract:: Relative to other systems in the PNW, the rain-dominated, coastal watersheds of western Oregon have shallow aquifers. Given the seasonality of streamflow and storage limitations in coastal, rain-dominated watersheds, changes in the temporal patterns of precipitation have the potential to magnify the risk of extreme streamflow conditions during both high-...
Resource Type:: Dissertation
Full Text:: Mary Santelmann Rebecca Flitcroft Relative to other systems in the PNW

Satellite Monitoring of Earth’s Surface Temperature : Effects of Land Cover, Disturbance, and a Changing Climate

Creator:: Mildrexler, David J.
Abstract:: The Earth’s surface is experiencing unprecedented change. Humanity’s growing population, expanding land-use footprint, and increasing global emissions of atmospheric greenhouse gases affect a vast number of species on Earth and the functioning of virtually all ecosystems. Given the vital interactions and feedbacks between the Earth’s land surface and climate, measurements...
Resource Type:: Dissertation
Full Text:: Pacific Northwest region (PNW: Oregon and Washington) of the USA during the MODIS Aqua era (since 2003

Modern Wheat Breeding: Next Generation Sequencing and CRISPR Transformation

Creator:: Brandt, Kali M.
Abstract:: Wheat (Tritium aestivum) is an extremely important crop worldwide. It accounts for almost one quarter of the calories consumed each day by more than one third of the world’s population, and is grown over more land area than any other crop. Wheat breeding programs constantly strive to increase or maintain...
Resource Type:: Dissertation
Full Text:: for stripe rust resistance and facultative growth habits in PNW-adapted germplasm that can be used

The impact of maritime user fees on Pacific Northwest wheat transportation : a network programming approach

Creator:: Lubis, Rusdian
Resource Type:: Dissertation
Full Text:: shallow and deep-draft maritime user fees on the PNW wheat transportation from supply regions to the

Strategies for sampling and estimation of aboveground tree biomass

Creator:: Poudel, Krishna Prasad
Abstract:: The issue of global climate change and an increasing interest in the reduction of fossil fuel carbon dioxide emissions by using forest biomass for energy production has increased the importance of quantifying forest biomass in recent years. The official U.S. forest carbon reporting is based on the forest biomass estimates...
Resource Type:: Dissertation
Full Text:: . .......................................... 66 Figure 3.3. Average biomass estimates by the FIA-CRM, FIA-PNW, and Jenkins

The Impact of Disturbance on Carbon Stores and Dynamics in Forests of Coastal Alaska

Creator:: Yatskov, Mikhail A.
Abstract:: Changes in climate caused by increased concentrations of carbon dioxide (CO₂) in the Earth’s atmosphere have led land and ocean surface temperatures to increase by 0.85°C and sea level to increase by 19 cm relative to preindustrial times. Global climate change will lead to further alterations in mean temperature and...
Resource Type:: Dissertation
Full Text:: (PNW) and the Pacific Islands. Thank you all for collecting uncompromised high quality forest

Three essays on private landowners' response to incentives for carbon sequestration through forest management and afforestation

Creator:: Kim, Taeyoung
Abstract:: This dissertation consists of three essays on private landowners' response to incentives for carbon sequestration in forests. The first essay examines private landowner response to incentives for carbon sequestration through various combinations of intermediate management practices. The second essay focuses on agricultural landowners' willingness to participate in an incentive program...
Resource Type:: Dissertation
Full Text:: correlation in PNW region under BC ratio targeting ...................................................... 149

Phylogenetic relationships of the bumblebees (Apidae: Hymenoptera) in the Pacific Northwest of America inferred from mitochondrial cytochrome oxidase gene sequences

Creator:: Pongprasert, Weerathep
Resource Type:: Dissertation
Full Text:: study is to understand the relationships of bumblebees in the Pacific Northwest (PNW) by phylogenetic

Comparison of Flexibacter columnaris strains isolated from fish in North America and other areas of the Pacific Rim

Creator:: Song, Yen-ling
Abstract:: Twenty-two isolates of Flexibacter columnaris were collected from different species of fish from a wide geographic range. Shieh medium was selected and modified to provide satisfactory growth of F. columnaris strains. Although there were three phenotypic variations in colony morphology among the strains observed, the environmental and biochemical characteristics as...
Resource Type:: Dissertation
Full Text:: that (a) 15 strains of columnaris isolated from the pacific Northwest (PNW) and England were nearly

Measuring and Modeling the Structure of Coniferous Trees with Point Clouds Data

Creator:: Fang, Rong
Abstract:: Coniferous trees are a major North American crop that has been intensively managed for its commercial value, while also serving as critical habitat for abundant wildlife and as carbon sinks. Having diverse functions, North American temperate coniferous forests have become a research hotspot for numerous scientific studies aiming to integrate...
Resource Type:: Dissertation
Full Text:: boundary of dbh class. H is simulated total tree height based on Eq. 3-10. VolumeFIA − PNW is the

Silvicultural impacts of sheep grazing in Oregon's Coast Range

Creator:: Leininger, Wayne C.
Abstract:: A three-year investigation was conducted during 1980-1982 to evaluate the potential of using herded sheep as a silvicultural tool to suppress brush in Douglas-fir (Pseudotsuga menziesii) plantations of Oregon's Coast Range. Sheep browsing of Douglas-fir was highest in May soon after bud break. Averaged over the 2 years of grazing,...
Resource Type:: Dissertation

Spatially explicit inter-temporal forest management decision under the risk of fire

Creator:: Konoshima, Masashi
Abstract:: This paper presents a framework for analyzing efficient spatial allocation of forest management efforts - fuel treatment and harvest - under the risk of fire. The framework integrates a fire behavior model and a spatially-explicit stochastic dynamic optimization model. I investigate the effects of spatial interaction across plots during forest...
Resource Type:: Dissertation
Full Text:: condition”) . . . 109 5.26 Optimal decisions for different levels of high fire frequency (labeled ”ac

Measuring the Economic Impacts of Natural Disturbances and Policy Interventions on Log and Lumber Markets in Oregon

Creator:: Zhai, Jun
Abstract:: The forest sector forms an important part of Oregon’s economy, especially in rural communities. However, the economic performance and development of the sector are subject to both significant natural disturbances and to new and existing policies. The most common and disastrous natural disturbances in Oregon are wildfires. The Biscuit Fire...
Resource Type:: Dissertation
Full Text:: China, Japan and South Korea have provided additional demand for logs from the Pacific Northwest (PNW

Epiphytic macrolichens in relation to forest management and topography in a western Oregon watershed

Creator:: Berryman, Shanti D.
Abstract:: This dissertation describes patterns in epiphytic macrolichen community composition, diversity, and biomass across various stand types in the Blue River watershed of western Oregon. It first examines the relative importance of ecological factors such as stand age, remnant tree retention, and topography to lichen communities in the landscape. It then...
Resource Type:: Dissertation
Full Text:: ...........................................................................................109 METHODS

Impacts of ponderosa pine forest restoration treatments on the ectomycorrhizal fungal community and fine root biomass in the Blue Mountains of Oregon

Creator:: Smith, Jane E. (Jane Elizabeth)
Abstract:: Before the arrival of Euro-Americans, the inland Pacific Northwest was settled by native people whose frequent intentional burning of the landscape promoted open stands dominated by large fire-resistant ponderosa pine. Fire suppression for nearly a century, livestock grazing, and logging of the largest trees has resulted in forests characterized by...
Resource Type:: Dissertation
Full Text:: Forest Service PNW Research Station and by a grant from USDA National Research Initiative (96-03 859

The influence of biophysical feedbacks and species interactions on grass invasions and coastal dune morphology in the Pacific Northwest, USA

Creator:: Zarnetske, Phoebe Lehmann
Abstract:: Biological invasions provide a unique opportunity to study the mechanisms that regulate community composition and ecosystem function. Invasive species that are also ecosystem engineers can substantially alter physical features in an environment, and this can lead to cascading effects on the biological community. Aquatic-terrestrial interface ecosystems are excellent systems to...
Resource Type:: Dissertation
Full Text:: ................................................................. 109 LIST OF FIGURES (Continued) Figure Page 5.3 Comparison of the mean relative

An econometric analysis of the Japanese import demand for U.S. forest products

Creator:: Niami, Farhad
Abstract:: Japan is the largest market for U.S. forest products. Therefore, export of wood products to this country is critical to the economic life of the forest industry in the U.S. and particularly for the Pacific Northwest. Hence, economic conditions and developments in Japan may significantly affect the volume of trade...
Resource Type:: Dissertation
Full Text:: 109 ft3 and in the case of the spruce inventory is about 243.82 x 107 ft3 (1). Almost all the

Characterizing early-seral competitive mechanisms influencing Douglas-fir seedling growth, vegetation community development, and physiology of selected weedy plant species

Creator:: Dinger, Eric J.
Abstract:: Three studies were conducted to characterize and present early-seral competition between Douglas-fir seedlings and the surrounding vegetation communities during Pacific Northwest forest establishment. The first experiment served as the foundation for this dissertation and was designed to quantify tradeoffs associated with delaying forest establishment activities by introducing a fallow year...
Resource Type:: Dissertation
Full Text:: physical act of harvesting a Pacific Northwest (PNW) conifer forest dramatically increases the

Context matters : A multi-scale assessment of riparian tree response to upslope density reduction

Creator:: Ruzicka, Kenneth J., 1982-
Abstract:: Forest management is rapidly undergoing a transformation from a discipline based on efficient commodity production to one for multiple uses, especially on federally managed land in the United States. This new management paradigm has challenged silviculturists to develop and adapt forest management techniques that can deal with increased demands. Using...
Resource Type:: Dissertation
Full Text:: , Kathryn L. eds. Density Management for the 21st century: west side story. General Technical Report PNW

Interregional and interseasonal competition in the U.S. beef industry, 1967 : an integrated analysis

Creator:: Pendse, Dilipsinha Chintamani
Abstract:: Production and marketing are two important activities of the U.S. beef industry. Spatial differences in these activities result due to the existing cost differences in production and marketing of beef. The overall objective of this study is to determine simultaneously interregional and interseasonal equilibrium, with respect to beef production and...
Resource Type:: Dissertation
Full Text:: Production and Marketing in the PNW, "Rest of the West, " and the Nation, 1959-1963, 1964, 1968 6 2

A regional computable general equilibrium model with applications for the Pacific Northwest

Creator:: Zheng, Xiaojuan
Abstract:: Many important policy problems entail linkages among multiple economic sectors, and require the use of a general equilibrium economic modeling framework. This economic approach is appropriate when the market for any one good or service is linked to numerous other goods and services, and back to fundamental inputs such as...
Resource Type:: Dissertation
Full Text:: "Developing a Sustainable Biofuels System in the PNW: Economic, Policy and Commercialization Analysis," and

Mixed-Severity Fire Effects on Biological Legacies and Vegetation Response in Pseudotsuga Forests of Western Oregon's Central Cascades, USA

Creator:: Dunn, Christopher J.
Abstract:: Mixed-severity fire occurrence is increasingly recognized in Pseudotsuga forests of the Pacific Northwest, but questions remain about how tree mortality varies, and forest structure is altered, across the disturbance gradient observed in these fires. Therefore, we sampled live and dead biological legacies at 45 one ha plots, with four 0.10...
Resource Type:: Dissertation
Full Text:: Pacific Northwest (PNW) are typically characterized as having an episodic-disturbance regime of low

Survival of early instars of the western spruce budworm (Choristoneura occidentalis Freeman)

Creator:: Egan, Thomas H.
Resource Type:: Dissertation
Full Text:: . Beckwith, U.S.F.S., PNW Experiment Station, for introducing me to the field of Entomology and for his

Examination of imputation methods to estimate status and change of forest attributes from paneled inventory data

Creator:: Eskelson, Bianca N. I.
Abstract:: The Forest Inventory and Analysis (FIA) program conducts an annual inventory throughout the United States. In the western United States, 10% of all plots (one panel) are measured annually, and a moving average is used for estimating current condition and change of forest attributes while alternative methods are sought in...
Resource Type:: Dissertation
Full Text:: ................................................................................... 109 Future directions

Spatial patterns of fuel management activities and their effects on wildfire behavior

Creator:: Kim, Young-Hwan
Abstract:: Fuel management has been used as an effective local strategy to reduce the undesirable consequences of wildfires. Many efforts toward scheduling of fuel management activities across a broader landscape have been proposed, with the hope of achieving larger landscape-scale management effects. However, scheduling of fuel management treatments across the broader...
Resource Type:: Dissertation
Full Text:: ................................................... 109 4.3.3 Analysis of Simulated Outputs ........................................ 110 4.4

Life-history and physiological trade-offs to reproduction of invasive and noninvasive Rubus

Creator:: McDowell, Susan C.
Abstract:: The goal of this dissertation was to improve our understanding of the physiology and life-history of invasive plants and of the mechanisms underlying life-history trade-offs. I compared invasive and noninvasive species of Rubus (blackberry) that grow together in the Pacific Northwest. Three hypotheses were investigated: (1) Invasive Rubus have higher...
Resource Type:: Dissertation
Full Text:: methods ........................... 106 4.3.4 Demographic analyses................................... 109

In-forest log segregation based on acoustic measurement of wood stiffness

Creator:: Amishev, Dzhamal Y.
Abstract:: To remain competitive, the forest products industry needs to look for new and innovative processes and technologies to not only reduce costs but also to recover more value through the entire seedling-to-customer forest products supply chain. It is well recognized that measuring wood properties of logs in real time during...
Resource Type:: Dissertation
Full Text:: ………………………………………………….....109 5.1 ABSTRACT………………………………………………………………..110 5.2 INTRODUCTION………………………………………………………….112 5.3

A Generation Prioritization Method for Power System Restoration with Renewable Resources

Creator:: Mate, Adam
Abstract:: The electrical grid is a key component of the Nation's critical infrastructure. Its continuous and reliable operation is of vital importance; any system-wide disruption would have a debilitating impact on crucial services, public health and safety, the economy, and the national security of the United States. High-impact low-frequency events pose...
Resource Type:: Dissertation
Full Text:: Predicted 2020 energy portfolio of the PNW . . . . . . . . . . . . . . . . . . 23 3.2 Implemented renewable

Studies on the etiology and epidemiology of bull's eye rot of pears

Creator:: Henriquez, Jose Luis, 1961-
Abstract:: The objective of this dissertation is to introduce low-cost processing methods for the fabrication of ZnO transparent thin-film transistors (TTFTs). A novel method for depositing ZnO body layers via spin-coating of a zinc nitrate-based spin solution is presented. The processing conditions of spin-coated ZnO are optimized to produce continuous and...
Resource Type:: Dissertation
Full Text:: N. alba ........109 4.5 Correlation coefficients (r) between wetness duration and disease incidence

Impact of raspberry bushy dwarf virus, raspberry leaf mottle virus, and raspberry latent virus on plant growth and fruit crumbliness in red raspberry (Rubus idaeus L.) 'Meeker'

Creator:: Quito-Avila, Diego F.
Abstract:: The United States is the third-largest producer of raspberries in the world. Washington State leads the nation in red raspberry (Rubus idaeus L.) production. 'Meeker', the most grown red raspberry cultivar in the Pacific Northwest (Washington, Oregon and British Columbia, Canada) is highly susceptible to Raspberry crumbly fruit, a virusinduced...
Resource Type:: Dissertation
Full Text:: ”. Chapter 1: Introduction Diego F. Quito-Avila 2 The Pacific Northwest (PNW) (Oregon

Understory competition for resources in Pinus ponderosa forests of northeastern Oregon

Creator:: Riegel, Gregg M.
Abstract:: The objective of this research was to determine which environmental resources, light, water, and nutrients, control understory plant production and composition in a Pinus ponderosa forest in northeastern Oregon. A split-plot experimental design, with three blocks, four treatments, and 44 plots, was established in the summer of 1985. Twenty plots...
Resource Type:: Dissertation
Full Text:: light measurements. Larry Bryant (USFS PNW, La Grande) graciously loaned a water pump enabling us to

Characterizing Uncertainty and Assessing the Impact of Rapid Climate Change on the Distribution of Important Tree Species in the Pacific Northwest

Creator:: Kralicek, Karin M.
Abstract:: Climate change will impact the location of suitable habitat for tree species in the Pacific Northwest. Locations that become unsuitable will experience increased levels of tree mortality and diminished levels of tree growth. Understanding how these impacts will spatially manifest is vital for efficient management of natural resources. An invaluable...
Resource Type:: Dissertation
Full Text:: .......................................................................................................... 37 3.2.1. Five important species of the PNW

Foliar respiration in an old-growth coniferous forest

Creator:: Cooper, Clifton E.
Abstract:: Foliar respiration forms a large component of the carbon balance of any coniferous forest. We examine seasonal, interannual, spatial and interspecific variation of foliar maintenance respiration in a forest in Washington, USA, with measurements made quarterly for >4 years on 400-year old trees of Pseudotsuga menziesii, Tsuga heterophylla and Thuja...
Resource Type:: Dissertation
Full Text:: canopy,. and understory), pooled results from 1998-2001 ........................... 109 4.6 Total

Price-Endogenous Farm Technology Adoption and Ex-Ante Economic Impact Assessment

Creator:: Cho, Seojin
Abstract:: Technological growth in agriculture increases crop output but it could lower output price in the market. Economic impact assessment in ex-ante analysis usually does not include these indirect supply responses, which can overestimate the economic potential of new technology. This dissertation provides an integrated farm-level ex-ante impact assessment model to...
Resource Type:: Dissertation

Small mammal micro- and macrohabitat selection in streamside ecosystems

Creator:: Doyle, Arlene T.
Abstract:: During summer and fall of 1981 to 1983, mark-recapture was conducted in riparian and upland habitats within old-growth and mature forests in the Cascade Range of Oregon. Number of individuals and species richness were greater in riparian than upland habitat. For most species, the mean adult weights and the percentages...
Resource Type:: Dissertation

Cryptogam communities in forest and steppe ecosystems of Oregon, USA

Creator:: Root, Heather T.
Abstract:: I focus on addressing knowledge gaps relating to management of cryptogams in Oregon's public lands in Pseudotsuga menziesii-Tsuga heterophylla forests on the west side of the Cascade Range and dryland steppe in the Cascade Range's rainshadow. While a great deal of research has illustrated the importance of late-successional forests for...
Resource Type:: Dissertation
Full Text:: biodiversity in the Pacific Northwest of North America (PNW) is a lichen community rich in nitrogen-fixing

A simulation model of wood dynamics in Pacific Northwest streams

Creator:: Meleason, Mark Alan
Abstract:: Conceptually, the dynamics of wood in streams can be viewed in terms of input and in-channel processes. Input processes are associated with both the riparian (tree fall, bank cutting, windthrow) and upslope forests (mass failures). In-channel processes include log breakage, movement, and decomposition. A mechanistic view of these processes is...
Resource Type:: Dissertation
Full Text:: Technical Report PNW-229. 5 McDade, M. H., F. J. Swanson, W. A. McKee, J. F. Franklin, and J. Van Sickle

Development of a hybrid modeling framework for intensively managed Douglas-fir plantations in the Pacific Northwest

Creator:: Weiskittel, Aaron R.
Abstract:: Forest growth models in the Pacific Northwest are predominantly empirical. Predictions of yield under alternative silvicultural regimes cannot rely completely on field trials; yet empirical growth models are often inadequate for extrapolating untested regimes and genotypes. The limitations of current models include (1) long time-steps (e.g. 5-10 years); (2) insufficient...
Resource Type:: Dissertation
Full Text:: Pacific Northwest (PNW). In both empirical and process-based models, the influence of crown

Population and behavioral responses of small mammals to silviculture and downed wood treatments in the Oregon Coast Range

Creator:: Waldien, David L.
Abstract:: Forest managers are challenged to provide timber revenues and other resources for society while protecting and enhancing components of biodiversity that are often associated with older forests or older forest structure, such as dead wood. We examined small mammal response to timber harvest in stands 8-10 years following group-selection, two-story,...
Resource Type:: Dissertation
Full Text:: in this research project by block with silvicutural and wood treatment designations 109 APPENDIX B

The effects of land use on mineral flat wetland hydrologic processes in lowland agricultural catchments

Creator:: Marshall, Sarah M.
Abstract:: Hydrologic processes within mineral flat wetlands, along with their connections to groundwater and downstream surface water in lowland agricultural catchments are poorly understood, particularly under different land uses. In the three field studies included in this thesis, we examined infiltration, wetland hydroperiod, groundwater recharge dynamics, surface runoff generation, and water...
Resource Type:: Dissertation
Full Text:: ecosystems in their respective regions (PNW-ERC 2002; Rheinhardt et al. 2002; PNW-ERC 2002). While land

The effects of mycorrhizal colonization and phosphorus fertilization on Douglas-fir seedling growth, morphology, and photosynthesis

Creator:: Black, C. H. (Charles H.)
Resource Type:: Dissertation
Full Text:: Methods Results and Discussion Literature Cited 105 106 106 107 109 113 121 BIBLIOGRAPHY 123 LIST

Water scarcity and reservoir reliability in basins affected by climate and land use change : impacts of hydrogeology, sensitivities, and uncertainties in the Santiam River Basin, Oregon

Creator:: Mateus, M. Cristina
Abstract:: Multipurpose management of hydrosystems face a number of uncertainties related to hydrologic variability and nonstationarity. Anticipated air temperature increases in the Pacific Northwest region are projected to alter the timing and quantity of streamflow associated with precipitation shifting from snow to rain, including shorter winter runoff periods, earlier spring runoff,...
Resource Type:: Dissertation
Full Text:: .................................................................................................... 109 Figure 4-4 Summer reliability

The relationship between stream habitat complexity and anadromous salmonid diversity and habitat selection

Creator:: Chen, Glenn K.
Resource Type:: Dissertation
Full Text:: ). Historically, Pacific Northwest (PNW) fluvial systems supported large populations of anadromous salmonids

Roosevelt elk habitat use in the Oregon Coast Range

Creator:: Witmer, Gary William
Abstract:: Daily and seasonal habitat use by Roosevelt elk was investigated in the Oregon Coast Range on managed, public forestland. Over 3,700 locations of 6 radio-collared cow elk were recorded during 12 consecutive months. Two elk formed part of a north band and 4 elk were part of a south band....
Resource Type:: Dissertation
Full Text:: was less than expected for all seasons (annual mean 109 versus expected mean = 122 in) except during

The mycorrhizal associations of western hemlock

Creator:: Kropp, Bradley Ray
Abstract:: Two objectives of this research were to identify fungi which are mycorrhizal with western hemlock and to examine the ecology of hemlock mycorrhizal fungi indigenous to outplanting sites. Another objective was to evaluate the effectiveness of mycorrhizal inoculation in improving the performance of outplanted hemlock seedlings. A list of over...
Resource Type:: Dissertation
Full Text:: . They are at approximately 854 m in elevation. 1978 Outplanting: In mid-April, 109 one-year-old

Analysis of the regional carbon balance of Pacific Northwest forests under changing climate, disturbance, and management for bioenergy

Creator:: Hudiburg, Tara W.
Abstract:: Atmospheric carbon dioxide levels have been steadily increasing from anthropogenic energy production, development and use. Carbon cycling in the terrestrial biosphere, particularly forest ecosystems, has an important role in regulating atmospheric concentrations of carbon dioxide. US West coast forest management policies are being developed to implement forest bioenergy production while...
Resource Type:: Dissertation
Full Text:: internship. We would like to thank the PNW-FIA regional office for their assistance and cooperation in

Thinning aged Douglas-fir : an analysis of mobilization costs and a log bucking strategy for revenue improvement

Creator:: Pilkerton, Stephen J.
Abstract:: Contract harvest operations have become the preferred approach to reducing the largest cost component of timber production through free market competition amongst logging contractors bidding or negotiating for work. The goal of this research was to investigate economic components of harvesting operations not previously studied for steep slope thinning harvests...
Resource Type:: Dissertation
Full Text:: reference to Chapter 3: Sue Willits, USFS PNW Research Station, for initiating the inquiry of base length

The effects of natural fire and recreational disturbance on montane forest ecosystem composition, structure and nitrogen dynamics, Crater Lake National Park, Oregon

Creator:: Wilson, John K. (John Kevin)
Abstract:: Disturbance, whether natural or of human origin, modifies to varying degrees many ecosystem attributes. Fire is a natural process in the montane forests of southern Oregon but for much of the 20th century fire was viewed as an apocalypse and thus fervently suppressed. Effective natural resource management requires an understanding...
Resource Type:: Dissertation
Full Text:: concentration (mg/kg) for the……………………………………………………….. 109 4.8 Soil surface influxes and 9-cm depth fluxes

The Art of Reducing Coastal Hazard Complexity: Coupling Physics and Probability to Understand Extremes, Variability, and Climate-dependence

Creator:: Anderson, Dylan L.
Abstract:: Coastal hazards are the result of numerous physical processes cumulatively causing water levels to flood and erode the land. The waves, storm surges, tides, and run-off contributing to elevated water levels are each the product of chaotic and random weather patterns. These stochastic weather patterns dissipate energy in Earth's climate...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 4.2 PNW Longshore Wave Power . . . . . . . . . . . . . . . . . . . . . . . 101 4.3 Modeling

Riparian and adjacent upslope beetle communities along a third order stream in the western Cascade Mountain Range, Oregon

Creator:: Brenner, Gregory John
Abstract:: Monitoring wildlife habitats has become important to forest ecosystem management because it provides valuable information about the response of forests and their species to harvest practices, impacts from recreational use, conservation efforts, and natural and human-caused disturbances. Monitoring is a complex task that requires a variety of abiotic and biotic...
Resource Type:: Dissertation
Full Text:: 1993 Ordination Plot 109 23. July 1993 Ordination Plot 110 24. September 1993 Ordination Plot

Outcome Distributions in Impact Assessment : Climate Change and Technology Adoption in Pacific Northwest Agriculture

Creator:: Zhang, Hongliang
Abstract:: Increased temperature and precipitation variability and frequent extreme weather events due to climate change pose a threat to farming operations and agricultural communities. The recent IPCC assessment shows that the projected climate change will, on average, reduce wheat yields by 5% in temperate regions without adaptation and even more if...
Resource Type:: Dissertation
Full Text:: the PNW region studied here, this type of indicator can be related to the household’s current income

Extreme Wave Runup and Runup Variability on Beaches

Creator:: Li, Chuan
Abstract:: Wave runup is an important physical process that affects nearshore sediment transport, coastal erosion, and flooding. Large and unexpected runup events can also be dangerous to beach goers. Extreme runup statistics are essential parameters used in engineering design of marine structures and in coastal management. Although the study of runup...
Resource Type:: Dissertation
Full Text:: dangerous to beach goers in certain regions of the world, such as the Pacific Northwest (PNW) coast of the

An evaluation of understory vegetation dynamics, ecosystem resilience and state and transition ecological theory in an eastern Oregon ponderosa pine forest

Creator:: Carr, Craig A.
Abstract:: Relatively recent increases in ponderosa pine abundance have effected unprecedented changes to ecosystem structure and function. Efforts to restore ponderosa pine systems are often focused on the manipulation of tree structure and the re-introduction of a more natural fire regime. Successful restoration should also incorporate understory components but information addressing...
Resource Type:: Dissertation
Full Text:: ......................................................................................... 109 Methods

Ecological Effects of Reservoir Water Level Management and Implications for Juvenile Chinook Salmon

Creator:: Murphy, Christina A.
Abstract:: Large dams and their respective reservoirs can provide renewable energy and water security, but also profoundly alter riverine ecosystems. In the Pacific Northwest, dams and reservoirs cause discontinuities in river networks that have been particularly problematic for anadromous fishes. As barriers to the upstream and downstream migration of anadromous fishes,...
Resource Type:: Dissertation
Full Text:: Northwest of North America (PNW) are impounded and have physical, biological, and chemical conditions that

The role of strategic planning in the management of fire-prone western Oregon forests for maximizing terrestrial carbon stocks over a 100-year horizon

Creator:: Vanderberg, Michael R.
Abstract:: Current frameworks for analyzing forest carbon offset projects in disturbance-prone western forests often fail to address the dynamic nature of carbon pathways through time. They do not account for the probability of loss due to wildfire, which can influence the prediction of carbon storage at the end of a planning...
Resource Type:: Dissertation
Full Text:: regimes for each forest type……………………………… 109 4.1 Sample stand characteristics by forest type for

Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California

Creator:: Parke, Jennifer Lee
Resource Type:: Dissertation
Full Text:: Service General Technical Report PNW-90. WILLIAMSON, D.M. & MINORE, D. (1978). Survival and growth of

Risk modeling using direct solution of expected utility maximization problems

Creator:: Lambert, David K.
Abstract:: A model of agricultural decision making is developed and tested in this thesis. The expected value of utility evaluated under alternative outcomes is directly maximized in a nonlinear programming model. Two features of the model distinguished it from traditional risk programming models. First, alternative attitudes towards the assumption of risk...
Resource Type:: Dissertation
Full Text:: 100 Results 109 Expected Revenue Maximizing Marketing Strategies 109 Utility Dependent Marketing

Case studies of red alder and Sitka alder in Douglas-fir plantations : nitrogen fixation and ecosystem production

Creator:: Binkley, Dan
Abstract:: Seven case studies of 11 ecosystems were used to examine the effects of nitrogen-fixing alders in Douglas-fir plantations. The first case study quantified nitrogen (N) fixation and aboveground net primary production in a young Sitka alder [Alnus sinuata (Regel) Rydb.] ecosystem. At 5 yr of age, the N fixation (C₂2H₂...
Resource Type:: Dissertation
Full Text:: -fir vigor index by Sitka alder and red alder 97 106 109 Page 56 58 59 59 62 62 67 67 67

Spatial and temporal patterns of fire in the forests of the central Oregon Coast Range

Creator:: Impara, Peter C.
Abstract:: Fire history and fire regime were interpreted from tree ring analysis of 4320 stumps at 178 sites in a 25 by 55 km area in the central Oregon Coast Range. A total of 27 fire episodes were identified in a 516 year period, with sizes estimated at 18 to 544...
Resource Type:: Dissertation
Full Text:: and review of my dissertation. This work was funded by cooperative agreement (No. PNW 93-0478

Simulating Wood Properties in the Context of a Growth and Yield Model for Planted Douglas-fir

Creator:: Osborne, Nathaniel L.
Abstract:: Forest growth and yield models are critical to supporting decision making in forestry, but often lack considerations for wood properties. The feasibility of simulating wood properties in the context of a Douglas-fir individual tree growth and yield model was evaluated. This assessment explored the effect of predicted sapwood width, stem...
Resource Type:: Dissertation
Full Text:: veneer recovery from intensively managed young-growth Douglas-fir. Res. Pap. PNW-RP-437. Portland, OR

Mycorrhizal fungi and their relationship to plant succession in subalpine habitats

Creator:: Cazares, Efren
Resource Type:: Dissertation
Full Text:: 100 Description 101 Discussion 103 Acknowledgments 104 References 109 CHAPTER 6: Alpine and Subalpine

Effects of disturbance modes on mycorrhizal fungus communities at Crater Lake National Park

Creator:: Trappe, Matt
Abstract:: Crater Lake National Park presents an excellent opportunity for ecological research due to its relatively pristine landscape, the protection of its natural features, its infrastructure, and a Park administration supportive of scientific inquiry and restoration ecology. The research presented here examines the responses of fungi to various forms of perturbation....
Resource Type:: Dissertation
Full Text:: thank the Joint Fire Science Program (PNW-04-CA-11261952-317) and the NSF Microbial Observatory (MCB

Spatial and temporal dynamics of sediment and wood in headwater streams in the central Oregon Coast Range

Creator:: May, Christine L.
Abstract:: Channels that were scoured to bedrock by debris flows provided unique opportunities to calculate the rate of sediment and wood accumulation, to make inferences about processes associated with input and transport of sediment, and to gain insight into the temporal succession of channel morphology following disturbance. In an intensive investigation...
Resource Type:: Dissertation
Full Text:: .. 105 Methods 109 Results . 113 Large Wood Recruitment from the Local Hilislopes and Riparian Areas

Early-successional vegetation dynamics and microsite preferences following post-fire forest restoration in southwestern Oregon

Creator:: Kayes, Lori J.
Abstract:: Reforestation-based restoration of severely burnt plantations is one of the primary management activities following wildfire on U.S. federal lands. Restoration effects on early-seral plant and cryptogam communities have not been documented. The objectives of this study were, in severely burnt plantations two to four years post-fire, to examine the: (1)...
Resource Type:: Dissertation
Full Text:: by the Oregon BLM State Office, Medford District BLM and USDA Forest Service, PNW Research Station

Merging Field Work with Machine Learning : Exploring Andic Soil Development in the Cascade Range

Creator:: Osterloh, Kristopher Richard
Abstract:: Andic soils (aka Andisols) have unique properties that are important to society. For soil scientists, the genesis and taxonomy of Andisols is often confused because they can form in both volcanic and non-volcanic material. This dissertation seeks to address such confusion by looking at andic soil development in the Cascade...
Resource Type:: Dissertation
Full Text:: Importance . . . . . . . . . . . . . . . . . . . . . . 109 4.4 Conclusion

An analysis of technical efficiency and productivity growth in the Pacific Northwest sawmill industry

Creator:: Helvoigt, Ted L.
Abstract:: The objective of this project was to investigate technical efficiency and productivity growth in the Pacific Northwest sawmilling industry over the period 1968-2002. Productivity growth was decomposed into three components: technical change, efficiency change, and scale efficiency change. In addition, using econometric methods, changes in output elasticities and input substitution...
Resource Type:: Dissertation
Full Text:: ........................................................................................ 109 Returns to Scale Comparison

A Climate of Risk: Modeled Vegetation, Carbon, Fire, and Biomass Loss Risk in Western Oregon and Washington under Climate Change

Creator:: Sheehan, Timothy J.
Abstract:: Managing wildlands to protect species and ecosystem services in response to climate change is challenging. To develop effective long-term strategies, natural resource managers need to account for the projected effects of climate change as well as the uncertainty inherent in those projections. Vegetation models are one important source of projected...
Resource Type:: Dissertation
Full Text:: ............................................................................... 109 4.3.7 Drivers of biomass loss risk

Integrated Spatio-temporal Sustainability Analysis of Biofuels Using Biogeochemistry, Economic and Life Cycle Analysis

Creator:: Tabatabaie, Seyed Mohammad Hossein
Abstract:: Fossil fuels have been the main source of energy for a long period but due to growing concerns over climate change, oil depletion and energy security, the development of renewable sources of energy such as biofuels have been flourishing over the past few decades. Despite the fact that biofuels are...
Resource Type:: Dissertation
Full Text:: ............................................................................................................... 109 4.3 Materials and methods

Tradeoffs and Synergies among Wild Ungulates, Early Successional Plant Communities and Management Intensification in Forest Plantations of the Oregon Coast Range

Creator:: Stokely, Thomas D.
Abstract:: As the global demand for natural resources increases, more land will be intensively managed for the production of commodities such as timber, with potential consequences to biodiversity, ecological functioning and ecosystem services provided to society. Although there is strong consensus that intensive land management practices can negatively affect biodiversity, less...
Resource Type:: Dissertation
Full Text:: presence and excluding ungulate herbivores among herbicide treatments ................................. 109

Understanding changes in forest cover and carbon storage in early successional forests of the Pacific Northwest using USDA Forest Service FIA and multi-temporal Landsat data

Creator:: Schroeder, Todd A.
Abstract:: To effectively study dynamic processes like forest succession over long time periods one must effectively integrate data collected at many different times, locations and spatial scales. The purpose of this research is to integrate forest inventory data collected by the USDA Forest Service’s Forest Inventory and Analysis (FIA) Program with...
Resource Type:: Dissertation

Pathological and ecological aspects of decline and mortality of Chamaecyparis nootkatensis in southeast Alaska

Creator:: Hennon, Paul Edward
Abstract:: Alaska-cedar (Chamaecvparis nootkatensIs (D. Don) Spach) is a valuable tree that is suffering from a serious decline and mortality of unknown cause throughout southeast Alaska. Epidemiological and pathological studies were initiated to determine if a pathogen is the primary cause of this problem. By examining old aerial photographs and by...
Resource Type:: Dissertation
Full Text:: . The setting. Forest Service Gen. Tech. Rep. PNW-12. Pacific Northwest Forest and Range Exp. Sta

Population genetic structure and ecology of Rhizobium leguminosarum

Creator:: Strain, Steven R.
Resource Type:: Dissertation

Understory herb and shrub responses to root trenching, pre-commercial thinning, and canopy closure in Douglas-fir forest of the western Cascades, Oregon

Creator:: Lindh, Briana C.
Abstract:: This thesis examines factors limiting understory herb presence and flowering in young second-growth Douglas-fir (Pseudotsuga menziesii) forests on the west side of the Cascade Mountains, Oregon, USA. I studied the belowground effects of canopy trees on understory herbs and shrubs in old-growth forests using trenched plots from which tree roots...
Resource Type:: Dissertation

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