Index Catalog // ScholarsArchive@OSU

Greater Sage-Grouse (Centrocercus urophasianus) Demographic Rates and Predator Communities in a Degraded Landscape in Modoc County, California

Creator:: Sink, Chelsea E.
Abstract:: The greater sage-grouse (Centrocercus urophasianus: hereafter; sage-grouse) population in Modoc County California is geographically isolated and has been subsidized by translocation to prevent inbreeding depression since 2005. Despite significant efforts to increase the population through translocations and habitat improvement by cutting encroaching western juniper (Juniperus occidentalis), only a single lek...
Resource Type:: Masters Thesis
Full Text:: like to thank my committee members Jon Dinkins and Taal Levi for their advice in developing the

Passive acoustic monitoring of owls: two studies in forested landscapes of the Pacific Northwest

Creator:: Duchac, Leila S.
Abstract:: Nearly all birds communicate through sound, and there has been much study of avian populations and communities using song and other vocalizations. Owls are no exception as they defend territories, advertise for mates, and defend against threats using various vocalizations. However, due to their generally nocturnal habits, some owl species...
Resource Type:: Masters Thesis
Full Text:: better biologist because of it. I also thank my committee members, Taal Levi and Erin Bayne, for their

Using Satellite Imagery to Count Nesting Albatross from Space

Creator:: Dolliver, Jane E.
Abstract:: One fundamental concern in conservation biology is species abundance. For many taxa, however, these data are costly to obtain via direct observation and thus limited in geographic or temporal scope. Very high-resolution satellite imagery provides a means to address these limitations and provide remotely-sensed counts of large, colonial species. We...
Resource Type:: Masters Thesis
Full Text:: members Dr. Taal Levi and Dr. Anne Nolin, thank you for offering insight into data analysis and imagery

Diving into Diversity: Fish Populations and Climate Resilience in an Endorheic Basin

Creator:: Dew, Aleah
Abstract:: The Goose Lake Basin, situated on the border of Oregon and California, USA, faces significant challenges from drought, wildfire, and other environmental stressors. This region hosts numerous endemic fish species such as the Goose Lake redband trout (Oncorhynchus mykiss newberri), Goose Lake lamprey (Entosphenus sp.), Goose Lake tui chub (Siphateles...
Resource Type:: Masters Thesis
Full Text:: committee members Dr. Taal Levi, Dr. Jonny Armstrong, and Alex Harrison for their valuable feedback on my

Hold the Plastic, Please: An Investigation of Sea Otter Exposure to Microparticles and Microplastics Using Scat and Diet Analysis

Creator:: Van Brocklin, Jennifer E.
Abstract:: Sea otters act as valuable indicators of ecosystem health and consume prey items that contain anthropogenic microparticles, including microplastics. Microplastic ingestion can exert a wide range of deleterious effects depending on the organism and plastic type. We investigated the ingestion of microparticles by wild sea otters (Enhydra lutris) in Alaska...
Resource Type:: Masters Thesis
Full Text:: collaboration with other researchers. Thank you to Taal Levi for giving me the opportunity to start my

Creating High Throughput Low Cost Analysis of Different Labor-Intensive Repetitive Research Processes

Creator:: Sullivan, Christopher M.
Abstract:: Many research projects suffer from limited data causing poor statistical analysis or limited results. The movement to high throughput methods has been building for many years and cross many different disciplines. Lots of these methods start out using pathways that generate large amounts of data but have limited methods to...
Resource Type:: Masters Thesis

The Influence of Scale in a Structured Decision Making Framework for Chinook Salmon Management

Creator:: McDonnell, Kevin N.
Abstract:: The goal of my dissertation was to explore how scale influences stream restoration prioritization strategies for an anadromous species and identify influential uncertainties that exist at different scales. My objectives were to (1) produce a comprehensive review of the Chinook salmon management challenges in California’s Central Valley and identify the...
Resource Type:: Dissertation
Full Text:: Taal Levi. They’re guidance, commentary and expertise allowed me become a more rounded scientist

Habitat Associations and Diet Composition of Western Purple Martins in Western Oregon

Creator:: Sherman, Lorelle M.
Abstract:: The western purple martin (Progne subis arboricola) is a species of conservation concern throughout the Pacific Northwest. In western Oregon, the purple martin nests in three major ecosystem types: inland open-water, coastal, and upland forest. The availability of suitable breeding habitat is a major limiting factor for western purple martin...
Resource Type:: Masters Thesis
Full Text:: while working with Dr. Hagar. I am grateful for the motivation and encouragement Dr. Taal Levi

Foraging ecology of barred owls where they are outcompeting the threatened northern spotted owl

Creator:: Baumbusch, Ryan C.
Abstract:: Following European-American colonization of North America and associated landscape changes, barred owls (Strix varia) underwent a dramatic expansion of their historical range. The barred owl expanded across the previously tree-less Great Plains that had limited their distribution, and into the forests along the west coast. In these western forests they...
Resource Type:: Dissertation
Full Text:: committee, Drs. Taal Levi, Bob Mason, Todd Wilson, and Klaus Puettmann for thoughtful input and

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:: his practical views and approaches to problem-solving! Finally, Taal Levi was generous with his time

ScholarsArchive@OSU

Greater Sage-Grouse (Centrocercus urophasianus) Demographic Rates and Predator Communities in a Degraded Landscape in Modoc County, California

Passive acoustic monitoring of owls: two studies in forested landscapes of the Pacific Northwest

Using Satellite Imagery to Count Nesting Albatross from Space

Diving into Diversity: Fish Populations and Climate Resilience in an Endorheic Basin

Hold the Plastic, Please: An Investigation of Sea Otter Exposure to Microparticles and Microplastics Using Scat and Diet Analysis

Creating High Throughput Low Cost Analysis of Different Labor-Intensive Repetitive Research Processes

The Influence of Scale in a Structured Decision Making Framework for Chinook Salmon Management

Habitat Associations and Diet Composition of Western Purple Martins in Western Oregon

Foraging ecology of barred owls where they are outcompeting the threatened northern spotted owl

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

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search