Index Catalog // ScholarsArchive@OSU

The Influence of Wildfire and Invasive Vegetation on Mule Deer

Creator:: Schuyler, Elizabeth
Abstract:: The western United States has experienced large-scale degradation due to land use and land cover changes, invasion of annual grasses, and expansion of woody plants into grass and shrublands and the resultant altered fire regimes. These landscape-scale changes have coincided with declining mule deer (Odocoileus hemionus) populations, making habitat loss...
Resource Type:: Dissertation
Full Text:: : The Influence of Wildfire and Invasive Vegetation on Mule Deer. Abstract approved

Development and Evaluation of an Animal-borne Active Acoustic Tag to Conduct Minimally Invasive Behavioral Response Studies on Marine Mammals

Creator:: Fregosi, Selene
Abstract:: Development of new research tools is needed to better understand the potential effects of a noisier ocean on individual and populations of marine mammals. Current behavioral response studies utilize ship-mounted sound sources to induce short-term noise-related behavioral responses in tagged animals. Combining the tag with the sound source into an...
Resource Type:: Masters Thesis
Full Text:: : Development and Evaluation of an Animal-borne Active Acoustic Tag to Conduct Minimally Invasive Behavioral

Invasive bullfrog use of novel ephemeral habitats in the Pacific Northwest

Creator:: Cook, Megan Tetsuko
Abstract:: Invasive species are a major threat to global biodiversity. Understanding the mechanisms underlying successful invasions is imperative for developing effective management strategies. Plasticity in physiological, morphological, and behavioral traits could be an indicator of invasion potential in non-native species. The invasive American bullfrog (Lithobates catesbeianus) has recently been observed breeding...
Resource Type:: Masters Thesis
Full Text:: data on single season metamorphosis of invasive bullfrogs is largely anecdotal (Cohen and Howard 1958

Patterns in responses of an amphibian assemblage to wetland restoration

Creator:: Rowe, Jennifer C.
Abstract:: Wetland restoration success in attaining wildlife conservation goals can be confounded by the presence of multiple biological invaders. Wetland management activities typically target invasive plants, but bottom-up responses of higher trophic levels in novel communities are difficult to predict. We surveyed plant and amphibian assemblages at 26 sites enrolled in...
Resource Type:: Masters Thesis
Full Text:: Value of Restored Wetlands to Native and Invasive Amphibians in the Willamette Valley, Oregon

Characterizing the Spread and Consequences of Mycoplasma ovipneumoniae on Bighorn Sheep (Ovis canadensis) in the Northern Basin and Range Ecosystem

Creator:: Spaan, Robert S.
Abstract:: North American bighorn sheep (Ovis canadensis) have experienced significant declines and population extirpations due to novel pathogens such as Mycoplasma ovipneumoniae. This disease continues to limit the population restoration of bighorn sheep. Therefore, understanding the demographic consequences of pathogen presence and the risk of contact between bighorn populations and potential...
Resource Type:: Dissertation
Full Text:: . Title: Characterizing the Spread and Consequences of Mycoplasma ovipneumoniae on Bighorn Sheep (Ovis

Serologic survey of infectious disease agents in black bears (Ursus americanus) of California, Oregon, and Washington

Creator:: Mortenson, Jack A.
Abstract:: The causes of natural mortality and disease in free ranging black bears, Ursus americanus, in California, Oregon, and Washington are poorly known. Life history components, such as scavenging and overlapping habitat with many species of carnivores, potentially expose bears to a wide range of infectious disease agents. To date, no...
Resource Type:: Masters Thesis
Full Text:: regarding emerging and newly recognized diseases. The objectives of this study were (1) to determine the

Humpback Whale (Megaptera novaeangliae) Calling Behavior In Southeast Alaska : A Study In Acoustic Ecology And Noise

Creator:: Fournet, Michelle E. H.
Abstract:: Humpback whales (Megaptera novaeangliae) are a widely distributed baleen whale species, well known for their diverse acoustic behavior. On high-latitude foraging grounds, humpback whales produce a suite of non-song vocalizations (“calls”) in concert with foraging and social behavior. In this dissertation I investigated the role of calls in the acoustic...
Resource Type:: Dissertation
Full Text:: surveys including maximum and minimum number of whales sighted for each survey type

Predicting the distribution of the fisher (Martes pennanti) in northwestern California, U.S.A. : using survey data and GIS modeling

Creator:: Carroll, Carlos
Abstract:: Forest carnivores such as the fisher have frequently been the target of conservation concern due to their association with older forests and assumed sensitivity to landscape-level habitat alteration. Although the fisher has been extirpated from most of its former range in the western U.S., it is still found throughout much...
Resource Type:: Masters Thesis
Full Text:: northwestern California, U.S.A. : using survey data and GIS modeling AN ABSTRACT OF TI IF THESIS OF Carlos

Native Bee and Spider Community Responses to Grassland Restoration and Wildfire

Creator:: Smith DiCarlo, Lauren A.
Abstract:: Up to 99.9% of native North American grasslands have been degraded since European settlement, primarily due to agricultural conversion. Today, grasslands are a top priority for restoration as they provide essential habitat for many rare and endangered species; however, the majority of studies in grasslands have focused on vegetation or...
Resource Type:: Dissertation
Full Text:: predators and can enhance natural control of agricultural pests, a service with an estimated value of $4.5

Agricultural impacts on amphibian survival, growth, and distributions

Creator:: Baker, Nick J.
Abstract:: The potential impact of chemical contaminants and conservation practices on amphibians in agricultural landscapes is a key research topic globally. Amphibians represent a common group in many freshwater systems and are currently experiencing worldwide population declines. Global amphibian declines may be attributed to a number of causes, including habitat loss,...
Resource Type:: Masters Thesis
Full Text:: surveys were conducted in a 1-meter belt around the perimeter of the pond and deep water surveys took

ScholarsArchive@OSU

The Influence of Wildfire and Invasive Vegetation on Mule Deer

Development and Evaluation of an Animal-borne Active Acoustic Tag to Conduct Minimally Invasive Behavioral Response Studies on Marine Mammals

Invasive bullfrog use of novel ephemeral habitats in the Pacific Northwest

Patterns in responses of an amphibian assemblage to wetland restoration

Characterizing the Spread and Consequences of Mycoplasma ovipneumoniae on Bighorn Sheep (Ovis canadensis) in the Northern Basin and Range Ecosystem

Serologic survey of infectious disease agents in black bears (Ursus americanus) of California, Oregon, and Washington

Humpback Whale (Megaptera novaeangliae) Calling Behavior In Southeast Alaska : A Study In Acoustic Ecology And Noise

Predicting the distribution of the fisher (Martes pennanti) in northwestern California, U.S.A. : using survey data and GIS modeling

Native Bee and Spider Community Responses to Grassland Restoration and Wildfire

Agricultural impacts on amphibian survival, growth, and distributions

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