Index Catalog // ScholarsArchive@OSU

Nature in chains : the effects of Thomas Jefferson’s rectangular survey on a Pacific Northwest landscape

Creator:: Schweickert, Tina K.
Abstract:: Understanding the impact of humans on the environment has long been a topic of scholarly interest and debate. As environmental problems mount, accounts of historic ecological conditions and the factors of change become increasingly useful. This study considers competing schools of interpretation about human impacts on ecological landscapes and develops...
Resource Type:: Masters Thesis
Full Text:: , 2009. Title: Nature in Chains: The Effects of Thomas Jefferson’s Rectangular Survey on a Pacific

The Role of Emerging Pathogens in Amphibian Population Declines : Experimental Evidence

Creator:: Hambalek, Natalie M.
Abstract:: Rapid rates of biodiversity loss have supported the notion that Earth is experiencing a sixth major extinction event. The causes of worldwide biodiversity loss are multifaceted and context dependent. One of the most prominent groups experiencing population declines and extinctions are amphibians. Several pathogens and their associated diseases are especially...
Resource Type:: Masters Thesis
Full Text:: ……………………………………………………. 6 CHAPTER 2: THE IMPACTS OF EMERGING INFECTIOUS DISEASES AND OTHER CO- FACTORS ON AMPHIBIANS: A

An evaluation of biological control of Linaria dalmatica with Mecinus janthinus in Oregon

Creator:: Park, Alexander
Abstract:: Dalmatian toadflax (Linaria dalmatica) has become a prolific invasive plant of rangelands in Oregon since its arrival in the early 20th century. In 2001, the Oregon Department of Agriculture initiated a release program promoting the distribution of the stem-boring weevil, Mecinus janthinus as classical biological control agent to reduce densities...
Resource Type:: Masters Thesis
Full Text:: answered using historical biological release forms and monitoring data, and a 2013 state-wide survey of

Population characteristics of exotic plants in a Willamette Valley native prairie

Creator:: Lantz, Lisa E.
Resource Type:: Masters Thesis
Full Text:: role of competition in determining invasive success, seeds were sown in intact vegetation and in

Restoring the Columbia River Estuary : Chinook Salmon Recovery and Invasive Species Management

Creator:: Klopfenstein, Rachael
Abstract:: As highlighted in this study, shallow-water habitats and the prey they provide are important for juvenile salmon in the Columbia River estuary, but the spread of invasive species and large-scale changes to the estuary influence how these habitats are utilized. Reed canarygrass (Phalaris arundinacea) (“PHAR” hereafter) is a highly invasive...
Resource Type:: Masters Thesis
Full Text:: estuary, but the spread of invasive species and large-scale changes to the estuary influence how these

Exploring stakeholders' attitudes and beliefs regarding behaviors that prevent the spread of invasive species : a focus group study

Creator:: Kubeck, Gwenn
Abstract:: This research explores the barriers that prevent stakeholders from changing their hobby behaviors to help prevent the spread of invasive species in Oregon. Invasive species are increasingly causing economic and ecosystem harm in Oregon. This is among the first studies done on the human dimensions of invasive species. Using the...
Resource Type:: Masters Thesis
Full Text:: invasive species. Using the Theory of Planned Behavior as a framework, the attitudes, norms and perceived

An evaluation of the invasion potential of Kochia prostrata (forage kochia) in southwestern Idaho, USA

Creator:: Gray, Erin C.
Abstract:: Purposeful introductions of exotic species for rehabilitation efforts following wildfire are common on rangelands in the western U.S., though potential ecological impacts of introduced species in novel environments are often poorly understood. One such introduced species, Kochia prostrata (L.) Schrad (forage kochia) has been seeded on over 200,000 ha throughout...
Resource Type:: Masters Thesis
Full Text:: Master of Science in Botany and Plant Pathology presented on May 23, 2011. Title: An Evaluation of

Yield responses of invasive grasses to carbon doses

Creator:: Brunson, Jessi L.
Abstract:: The sagebrush steppe ecosystem of the northern Great Basin is severely degraded and continues to decline due in large part to the invasive, non-native annual grasses Bromus tectorum L. (cheatgrass) and Taeniatherum caput-medusae (L.) Nevski (medusahead). Restoration of invasive-dominated areas is difficult, but can be enhanced by adding a carbon...
Resource Type:: Masters Thesis
Full Text:: was provided by Terri Young and Curt McNamee of the United States Geological Survey Forest and

Epichloë typhina (fungus) - Botanophila lobata (fly) interaction : an invasive "pollinator" system in its introduced range in western Oregon

Creator:: Kaser, Joseph M.
Abstract:: Epichloë typhina (Ascomycetes: Clavicipitaceae) is an endophytic fungus that infects perennial Pooid grasses and is the causal agent of choke disease. It is endemic to Europe and was inadvertently introduced into orchardgrass seed production fields in western Oregon. Choke disease, which was first recorded in Oregon in 1996, currently infects...
Resource Type:: Masters Thesis
Full Text:: variability and reproductive success of E. typhina and B. lobata were estimated during surveys of ten

Seasonal occurrence and abundance of insect pests and natural enemies in the Columbia Basin

Creator:: Klein, Matthew L.
Abstract:: Potato (Solanum tuberosum L.) is the fourth largest food crop in the world following rice (Oryza sativa L.), wheat (Triticum spp.), and maize (Zea mays subs. mays). Potatoes arrived in the United States in the early 1600s and over the following centuries, the crop was subsequently cultivated across the country...
Resource Type:: Masters Thesis
Full Text:: . Title: Seasonal Occurrence and Abundance of Insect Pests and Natural Enemies in the Columbia Basin

ScholarsArchive@OSU

Nature in chains : the effects of Thomas Jefferson’s rectangular survey on a Pacific Northwest landscape

The Role of Emerging Pathogens in Amphibian Population Declines : Experimental Evidence

An evaluation of biological control of Linaria dalmatica with Mecinus janthinus in Oregon

Population characteristics of exotic plants in a Willamette Valley native prairie

Restoring the Columbia River Estuary : Chinook Salmon Recovery and Invasive Species Management

Exploring stakeholders' attitudes and beliefs regarding behaviors that prevent the spread of invasive species : a focus group study

An evaluation of the invasion potential of Kochia prostrata (forage kochia) in southwestern Idaho, USA

Yield responses of invasive grasses to carbon doses

Epichloë typhina (fungus) - Botanophila lobata (fly) interaction : an invasive "pollinator" system in its introduced range in western Oregon

Seasonal occurrence and abundance of insect pests and natural enemies in the Columbia Basin

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