Index Catalog // ScholarsArchive@OSU

Tracing Sources of Soil Organic Matter Through Time, Across Ecosystems, and Down Soil Profiles

Creator:: Gallo, Adrian Carlos
Abstract:: Soils contain the largest pool of carbon that is actively cycling on human timescales, leading many to view soils as a natural climate solution with multiple co-benefits. The field of soil science is rapidly evolving, but without a unified understanding of soil carbon dynamics. This dissertation leverages two distinct long-term...
Resource Type:: Dissertation
Full Text:: Abstract approved: Jeffery A. Hatten Soils contain the largest pool of carbon that is actively cycling on

Role of Extreme Events on Sedimentation in Loon Lake, Oregon Coast Range, USA

Creator:: Richardson, Kristin Noel Duckworth
Abstract:: Sediment cores were retrieved from a landslide-dammed lake, recording events back to the 5th century AD in a forested, mountainous catchment. These cores provide an opportunity to compare the impacts of known recent perturbations, including floods and timber harvesting with those of the early period of the core, flood, fire,...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________________ Robert A. Wheatcroft Jeff A. Hatten Sediment cores were retrieved from a

Quantifying Impacts of Forest Fire on Soil Carbon and Erosion in a Young, Intensively Managed Tree Farm in the Western Oregon Cascades

Creator:: McCool, Katherine D.
Abstract:: Forest soils of the Pacific Northwest contain immense amounts of carbon (C). Increasing acreage burned by severe wildfire in the western Oregon Cascades threatens belowground carbon stocks and future site viability. This study investigates forest soil carbon changes after the 2020 Holiday Farm wildfire in a young, intensively managed Douglas-fir...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Jeffery A. Hatten Forest soils of the Pacific Northwest contain immense amounts of

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

Response of Soil Temperature, Moisture, and Respiration Two Years Following Intensive Organic Matter and Compaction Manipulations in Oregon Cascade Forests

Creator:: Gallo, Adrian Carlos
Abstract:: Forest soils contain a substantial portion of global terrestrial carbon stores. Forest management can influence the soil carbon pool and how soil organic matter functions. The long-term productivity of forests is an ongoing goal where land managers utilize biomass and timber. A site-specific understanding of intensively managed forests can ensure...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ______________________________________________________ Jeff Hatten Forest

Effects of season and interval of prescribed burns on pyrogenic carbon cycling in ponderosa pine stands in Malheur National Forest

Creator:: Matosziuk, Lauren
Abstract:: In ponderosa pine (Pinus ponderosa) forests of the western United States, prescribed fires are used to reduce fuel loads and restore historical fire regimes. The season in which prescribed burns are performed and the interval between burns can have complex consequences for the ecosystem, including soil carbon cycling through the...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Jeff A. Hatten In ponderosa pine (Pinus ponderosa) forests of the western United States

Top-Down Effects of Wildlife and Bottom-Up Drivers of Soils and Productivity in Intensively Managed Forest Plantations in the Northern Oregon Coast Range

Creator:: Frey, David W.
Abstract:: In intensively managed forest plantations in the northern Oregon Coast Range, herbicides are often applied during site preparation and early stand regeneration to reduce competition for resources for planted conifer seedlings. In addition to reducing competition for crop trees, herbicide applications may affect soil processes including decomposition and nutrient cycling,...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ______________________________________________________ Jeff A. Hatten In

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

ScholarsArchive@OSU

Tracing Sources of Soil Organic Matter Through Time, Across Ecosystems, and Down Soil Profiles

Role of Extreme Events on Sedimentation in Loon Lake, Oregon Coast Range, USA

Quantifying Impacts of Forest Fire on Soil Carbon and Erosion in a Young, Intensively Managed Tree Farm in the Western Oregon Cascades

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

Response of Soil Temperature, Moisture, and Respiration Two Years Following Intensive Organic Matter and Compaction Manipulations in Oregon Cascade Forests

Effects of season and interval of prescribed burns on pyrogenic carbon cycling in ponderosa pine stands in Malheur National Forest

Top-Down Effects of Wildlife and Bottom-Up Drivers of Soils and Productivity in Intensively Managed Forest Plantations in the Northern Oregon Coast Range

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

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