Index Catalog // ScholarsArchive@OSU

Indirect effects of ultraviolet-B radiation on larval amphibians as mediated by food quality and trophic interactions

Creator:: Scheessele, Erin A.
Abstract:: Ultraviolet-B radiation (UVB) is an abiotic stressor in both terrestrial and aquatic systems. The stratospheric ozone layer, depleted due to anthropogenic activities and the cause of elevated UVB at earth's surface over the last four decades, is predicted to recover by 2065. However, UVB levels in aquatic systems may continue...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Erin A. Scheessele for the degree of Doctor of Philosophy in Zoology presented on November

Habitat distributions of birds and mammals in Lositne Canyon, Wallowa Mountains, northeast Oregon

Creator:: Sturges, Franklin Wright
Resource Type:: Dissertation
Full Text:: 3ugoztions and helped in various ways. Dr. Ienneth L. Gordon, acting as najor professor, deserves

The roles of nutrient dynamics, oceanography, and light in the structure and functioning of rocky intertidal macrophyte assemblages

Creator:: Close, Sarah L.
Abstract:: The influence of the physical environment on organisms has long been a subject of ecological research. But, the complex drivers of environmental variation, and the multiple scales at which this can occur, make studying this topic a difficult challenge. In rocky intertidal habitats, oceanographic- and climate-scale variability influence benthic communities...
Resource Type:: Dissertation
Full Text:: OF Sarah L. Close for the degree of Doctor of Philosophy in Zoology presented on January 17

Adaptive diversity and divergence at frog antimicrobial peptide loci

Creator:: Tennessen, Jacob A.
Abstract:: In this dissertation I study evolutionary patterns at genes encoding antimicrobial peptides (AMPs) in frogs. AMPs are short, amphipathic, cationic, secreted proteins that kill bacteria and other pathogens through a non-catalytic mechanism that involves binding to and disrupting the microbial cell membrane. In many animal taxa, positive selection is much...
Resource Type:: Dissertation
Full Text:: Phillipsen, Erin Scheessele, Catherine Searle, Joe Tyburczy, Richard Watts, Mike Westphal, Román Vilas, and

Chronobiology of garter snakes : environmental and hormonal mechanisms mediating hibernation and reproduction

Creator:: Lutterschmidt, Deborah I.
Abstract:: Most vertebrates exhibit seasonality in many life history traits. Such seasonal rhythms are temporally organized via the transduction of environmental cues (e.g., photoperiod, temperature) into appropriate endocrine signals. However, among ectothermic vertebrates that undergo continuous winter dormancy, temperature is the only environmental cue available for synchronizing seasonal rhythms. Most intriguing...
Resource Type:: Dissertation
Full Text:: designs. In addition, I would like to thank my committee members – Frank L. Moore, Fredrick Stormshak

Ultraviolet radiation as an environmental stressor of amphibians

Creator:: Bancroft, Betsy A.
Abstract:: My thesis explored the effects of and potential mediating mechanisms for an important environmental stressor, ultraviolet-B (UVB) radiation. UVB radiation has negative effects on organisms in both terrestrial and aquatic systems. I used meta-analysis to quantify the effects of UVB radiation on a diversity of aquatic organisms (Chapter 2). UVB...
Resource Type:: Dissertation
Full Text:: of the Blaustein lab. Erin Scheessele, John Romansic, Barbara Han, Catherine Searle, Lindsay

Wildlife Health in Managed Forests : Immunity and Infectious Diseases in Wild Rodents of Oregon

Creator:: Hanselmann, Rhea
Abstract:: With continual and worldwide human population growth, our impact on the natural environment expands and intensifies every day. We consume natural resources, burn fossil fuels, and release toxic compounds into the air, water, and earth. We build roads that fragment the landscape, construct new settlements, and develop agricultural lands in...
Resource Type:: Dissertation
Full Text:: Dizney at the University of Portland, Erin Gorsich at the OSU Department of Biomedical Sciences, Chad

Hidden dynamics : community ecology and costs of parasite infection in African buffalo (Syncerus caffer)

Creator:: Henrichs, Brian
Abstract:: Most wild animals are concurrently infected with multiple parasite species for most of their lives. These parasite species assemble into rich and diverse communities, with parasites using host tissues for growth and reproduction as well as evolving strategies to evade the host immune system. The net effect of these ecological...
Resource Type:: Masters Thesis
Full Text:: been better friends than I could have asked for. Thank you to Bree Beechler and Erin Gorsich for

The effects of multiple pathogens on amphibians in the Pacific Northwest

Creator:: Romansic, John M.
Abstract:: The earth is undergoing a “biodiversity crisis” characterized by loss of populations, species, genetic diversity, and ecosystem services. Part of this crisis consists of population declines, extinctions, and increased incidence of deformities in amphibians. It is unknown whether deformities contribute to these declines. Many cases of population declines in amphibians...
Resource Type:: Dissertation
Full Text:: started grad school. Erin Scheessele, Betsy Bancroft, and Barbara Han and Catherine Searle have been

Environmental influences on host-pathogen dynamics of the amphibian chytrid fungus

Creator:: Buck, Julia C.
Abstract:: The causes of the global biodiversity crisis are varied and complex. Anthropogenic threats may act in isolation, or interact additively or synergistically with each other or with natural stressors to affect sensitive taxa. The recent emergence of many infectious diseases in wildlife has brought attention to the role of disease...
Resource Type:: Dissertation
Full Text:: Blaustein lab, I have seen almost a full turnover of graduate students. Betsy, Barbara, Erin, and John, I

ScholarsArchive@OSU

Indirect effects of ultraviolet-B radiation on larval amphibians as mediated by food quality and trophic interactions

Habitat distributions of birds and mammals in Lositne Canyon, Wallowa Mountains, northeast Oregon

The roles of nutrient dynamics, oceanography, and light in the structure and functioning of rocky intertidal macrophyte assemblages

Adaptive diversity and divergence at frog antimicrobial peptide loci

Chronobiology of garter snakes : environmental and hormonal mechanisms mediating hibernation and reproduction

Ultraviolet radiation as an environmental stressor of amphibians

Wildlife Health in Managed Forests : Immunity and Infectious Diseases in Wild Rodents of Oregon

Hidden dynamics : community ecology and costs of parasite infection in African buffalo (Syncerus caffer)

The effects of multiple pathogens on amphibians in the Pacific Northwest

Environmental influences on host-pathogen dynamics of the amphibian chytrid fungus

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