Index Catalog // ScholarsArchive@OSU

Freeze-thaw cycles in permafrost soils and their impacts on the climate: A literature review

Creator:: Bergmann, Maya K.
Abstract:: Climate change is occurring at an increasingly rapid rate, with impacts heightened in the cold regions of the world including the Arctic. Warming effects are widespread, with one impacted process – freeze-thaw cycles – increasing in frequency and potentially triggering additional changes in permafrost soils that have previously acted as...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Jeffery A. Hatten, Committee Member, representing Department of Forest Engineering, Resources

Relationship of Soil Type and Burn Severity to Post-Fire Vegetation Response

Creator:: Maclennan, Audrey
Abstract:: Public lands in the Pacific Northwest are managed for multiple uses including timber production, recreation and aesthetic value, maintaining wildlife habitat, conserving native species, and carbon storage. Wildfires impact large areas encompassing broad environmental conditions. Interactions among underlying environmental gradients and alteration of overstory competition by fire of varying severities...
Resource Type:: Masters Thesis
Full Text:: by fire of varying severities often leads to a diverse vegetation response in the post-fire

Exploring Soil-Landscape Relationships on the Pacific Slope of Monteverde, Costa Rica

Creator:: Hesson, Kevin M.
Abstract:: Landscape positions have been used to determine soil properties. My soil study in Monteverde on the Pacific slope of Costa Rica was designed to examine soil-landscape relationships for sites with various land use histories and management. Soil pits were dug at Nacimiento y Vida, Crandell, Curi-cancha, La Calandria, and Finca...
Resource Type:: Masters Thesis
Full Text:: as a result, analysis should be done individually. There were a few significant relationships that

Ecosystem Photosynthesis and Forest-Atmosphere Interactions Inferred from Carbonyl Sulfide

Creator:: Rastogi, Bharat
Abstract:: An increase in anthropogenic activities since the industrial revolution, primarily due to burning of fossil fuels and changes in land cover, has resulted in a steady increase in the global mean atmospheric CO2 concentrations. While there is unequivocal scientific evidence on global warming and its multidimensional impacts on natural and...
Resource Type:: Dissertation
Full Text:: with him in 4 years. Dr. Jeffery Hatten was an excellent Graduate Council Representative. I would

Experiments and Observations on How Changes in Riparian Forests Affect Light and Stream Ecosystems

Creator:: Swartz, Allison G.
Abstract:: Riparian zones are ecotones between terrestrial and aquatic ecosystems. Processes in streams are strongly influenced by riparian forest communities, age, stage and structure. Temperate forests across much of North America, including riparian areas, are recovering from historic land clearing with many stands in the stem-exclusion phase of development in which...
Resource Type:: Dissertation
Full Text:: development in which a high density of young or early-mature trees create a single uniform canopy. This

The Impact of Freeze-Thaw Cycles to the Physical and Biogeochemical Properties of Alaskan Permafrost Soils

Creator:: Rooney, Erin C.
Abstract:: Arctic warming is exposing thawing permafrost to repeated freeze-thaw, a disruptive process that can alter soil biogeochemistry and physical structure. To investigate the impact of permafrost exposure to freeze-thaw, soil response was tested across three scales: 2.5 cm³ aggregates, a forested hillslope, and two sites at contrasting latitudes. XCT imaging...
Resource Type:: Dissertation
Full Text:: . Possinger assisted with data interpretation and analysis. Michael SanClements, Jeffery Hatten, Alexander

Copper compounds for durable composites : effects on material properties

Creator:: Vidrine, Cheney L.
Abstract:: The effects of incorporation of selected biocides on physical and mechanical properties of aspen strandboard were assessed using five copper-based preservatives or zinc borate at three retention levels. Tebuconazole or 4,5-dichloro-2-N-octyl-4-isothiazolin-3-one (DCOI) were added as co-biocides to selective copper-based treatments. Mold box tests showed that only panels treated with DCOI...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Jeffery J. Morrell Frederick A. Kamke The effects of incorporation of selected biocides

Role of Sea Surface Physical Processes in Mixed-layer Temperature Changes During Summer Marine Heat Waves in the Chile-Peru Current System

Creator:: Cooley, Kylene M.
Abstract:: Development of marine heat waves (MHWs) in the Chile-Peru Current System (CPCS) is influenced by multiple physical processes at the air-sea interface whose individual role in these destructive events is difficult to infer. We identified MHW events from sea surface temperature (SST) anomalies from time periods of extreme ocean warming...
Resource Type:: Masters Thesis
Full Text:: by Kylene M. Cooley A THESIS submitted to Oregon State University in partial fulfillment of the

Comparing Ectomycorrhizal Communities of Understory Giant Chinquapin (Chrysolepis chrysophylla) and Overstory Pinaceae Trees in a Mixed Conifer Forest in Central Oregon

Creator:: Longway, Lucas J.
Abstract:: Giant chinquapin (Chrysolepis chrysophylla) is an evergreen hardwood often found as a shrubby understory component of coniferous forests in the Pacific Northwest United States. Due to its ability to sprout quickly after disturbances such as fire and logging it is often viewed as a pest by forest managers. Like its...
Resource Type:: Masters Thesis
Full Text:: Chinquapin (Chrysolepis chrysophylla) and Overstory Pinaceae Trees in a Mixed Conifer Forest in Central

Douglas-fir (Psuedotsuga menziesii) biomass and nutrient removal under varying harvest scenarios involving co-production of timber and feedstock for liquid biofuels

Creator:: Coons, Kristin L.
Abstract:: In this study an improved model of biomass and nutrient estimation of coastal Douglas-fir (Psuedotsuga menziesii) in the Pacific Northwest has been developed across a wide range of stand management regimes. This study quantifies and defines the type and intensity of biomass harvest and associated removal for actively managed stands...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Douglas A. Maguire In this study an improved model of biomass and nutrient estimation of

ScholarsArchive@OSU

Freeze-thaw cycles in permafrost soils and their impacts on the climate: A literature review

Relationship of Soil Type and Burn Severity to Post-Fire Vegetation Response

Exploring Soil-Landscape Relationships on the Pacific Slope of Monteverde, Costa Rica

Ecosystem Photosynthesis and Forest-Atmosphere Interactions Inferred from Carbonyl Sulfide

Experiments and Observations on How Changes in Riparian Forests Affect Light and Stream Ecosystems

The Impact of Freeze-Thaw Cycles to the Physical and Biogeochemical Properties of Alaskan Permafrost Soils

Copper compounds for durable composites : effects on material properties

Role of Sea Surface Physical Processes in Mixed-layer Temperature Changes During Summer Marine Heat Waves in the Chile-Peru Current System

Comparing Ectomycorrhizal Communities of Understory Giant Chinquapin (Chrysolepis chrysophylla) and Overstory Pinaceae Trees in a Mixed Conifer Forest in Central Oregon

Douglas-fir (Psuedotsuga menziesii) biomass and nutrient removal under varying harvest scenarios involving co-production of timber and feedstock for liquid biofuels

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