Index Catalog // ScholarsArchive@OSU

Redox processes in a seasonally reduced riparian zone soil ecosystem

Creator:: Roland, Rio W.
Abstract:: Seasonal reducing conditions play an important role in the cycling of nutrients and soil pore water chemical constituents in the Willamette Valley. Long periods of soil saturation lead microorganisms utilizing organic matter as their carbon source to find alternative electron acceptors other than oxygen. Once oxygen has been depleted microorganisms...
Resource Type:: Undergraduate Thesis

Native wildlife species (Pseudacris regilla) utilizing invasive-dominated habitat in a highly disturbed ecosystem

Creator:: Epperly, Haley K.
Abstract:: The Pacific Treefrog (Pseudacris regilla) is commonly encountered throughout the Pacific Northwest and can be an indicator for ecosystem health. At each life stage P. regilla utilizes a different habitat and therefore it is important to understand habitat use at all life stages to properly manage the ecosystem, however, few...
Resource Type:: Honors College Thesis
Full Text:: invasive-dominated habitat in a highly disturbed ecosystem Native wildlife species (Pseudacris regilla

Spatial and temporal distribution of soil mesofauna in a managed grassland ecosystem

Creator:: Neese, Kristine Maree
Abstract:: Little is known about upland agricultural grassland soil invertebrate composition and its contribution to ecosystem functioning. Soil-dwelling organisms play a central role in soil formation, plant nutrition, and are significant food contributors for organisms in several trophic levels. Information is needed about mesofauna seasonal population and composition trends throughout the...
Resource Type:: Undergraduate Thesis

Associations between blooming plants and bee visitors in a riparian ecosystem in eastern Oregon

Creator:: Roof, Samantha M.
Resource Type:: Presentation
Full Text:: in a riparian forested ecosystem in eastern Oregon Associations between blooming plants and bee

The use of lichen to monitor semivolatile organic compounds in high elevation ecosystems

Creator:: Moore, Eli
Resource Type:: Undergraduate Thesis

Ecosystem Analysis of Wetland and Riparian Zone restoration at the Hart Mountain Antelope Refuge over Twenty Years

Creator:: Reis, Schyler Ainsworth
Abstract:: Hart Mountain National Antelope Refuge (HMNAR) established in 1936, is 101,000 ha in area. The refuge was grazed by domestic livestock from the 1870s until their exclusion in 1990. Just prior to removal of livestock, photopoints were taken at various riparian and wetland locations throughout the refuge to document riparian...
Resource Type:: Undergraduate Thesis and Presentation

Soil surface CO2 efflux across the climatic gradient of the Oregon Transect for Terrestrial Ecological Research (OTTER)

Creator:: Martin, Mark A.
Abstract:: Soil CO2 efflux is a major contributor of CO2 to the atmosphere. The rate that CO2 is respired out of the soil is called the soil flux (Fs). Many variables alter Fs. These variables differ drastically in the variety of ecosystems found on the earth. It is important to understand...
Resource Type:: Undergraduate Thesis

Soil Fire Ecology: Assessing Wildfire Severity Impacts on Pacific Northwest Forest Soil Carbon

Creator:: Fleetwood, Shea
Abstract:: Pacific Northwest temperate rainforests are anticipated to experience increasingly frequent and severe wildfires in the foreseeable future due to climate change, increased fuel loads, and deforestation. Soil, underlying these forests, is the largest terrestrial carbon (“C”) reservoir. Fire disturbance influences soil C persistence, the timeframe and magnitude of which remain...
Resource Type:: Undergraduate Thesis
Full Text:: creating predictive models that incorporate the role of terrestrial ecosystems in climate change mitigation

Stomach Analysis of Top Aquatic Predators in a Headwater Stream Network

Creator:: Ain, Najma
Abstract:: Top predators play important roles in regulating communities and ecosystem processes in freshwater ecosystems. In the headwater stream network, it is crucial to understand the interspecific interaction between multiple predators. In Oregon forested ecosystems, Coastal Giant Salamander (Dicamptodon tenebrosus) and cutthroat trout (Oncorhynchus clarkii) are the top predators in many...
Resource Type:: Undergraduate Thesis
Full Text:: roles in regulating communities and ecosystem processes in freshwater ecosystems. These predators

Quantifying the Potential of Native Plants for Improving Pollination and Biological Control in Agroecosystems

Creator:: Winfield, Tammy L.
Abstract:: Agricultural areas can be inhospitable to the attraction and maintenance of beneficial insects like natural enemies and pollinators and this can result in a decrease in the ecosystem services of pollination and pest control that these insects supply. If habitat can be created and maintained on-farm, an increase in the...
Resource Type:: Undergraduate Thesis

ScholarsArchive@OSU

Redox processes in a seasonally reduced riparian zone soil ecosystem

Native wildlife species (Pseudacris regilla) utilizing invasive-dominated habitat in a highly disturbed ecosystem

Spatial and temporal distribution of soil mesofauna in a managed grassland ecosystem

Associations between blooming plants and bee visitors in a riparian ecosystem in eastern Oregon

The use of lichen to monitor semivolatile organic compounds in high elevation ecosystems

Ecosystem Analysis of Wetland and Riparian Zone restoration at the Hart Mountain Antelope Refuge over Twenty Years

Soil surface CO2 efflux across the climatic gradient of the Oregon Transect for Terrestrial Ecological Research (OTTER)

Soil Fire Ecology: Assessing Wildfire Severity Impacts on Pacific Northwest Forest Soil Carbon

Stomach Analysis of Top Aquatic Predators in a Headwater Stream Network

Quantifying the Potential of Native Plants for Improving Pollination and Biological Control in Agroecosystems

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