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Filtering by: Alternative title ssim Forest statistics for County, Oregon Remove constraint Alternative title ssim: Forest statistics for County, Oregon Advisor Blaustein, Andrew R. Remove constraint Advisor: Blaustein, Andrew R. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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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:

submitted to Oregon State University in partial fulfillment of the requirements for
Multiple stressors and amphibian population declines

Creator:

Hatch, Audrey C.

Abstract:

In the past decade, declines in amphibian populations have captured scientific and popular interest. The causes of the declines are likely to be complex and involve interactions between several environmental stressors. Using multifactorial experiments, I investigated the combined effects of several anthropogenic stressors on developing amphibians in Oregon, USA. In...

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Dissertation

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fertilizer on two species of amphibians at both low and high elevation sites in Oregon. InHyla Redacted for
Effects of pesticides on amphibians with special reference to the pyrethroidinsecticide, cypermethrin

Creator:

Biga, Lindsay M.

Abstract:

Pollution by pesticides is a ubiquitous concern for wildlife. The effects of pesticides are especially concerning in aquatic environments, which are particularly vulnerable as they have several exposure routes for the influx of chemicals. These effects are of particular concern as biodiversity loss reaches unprecedented rates. This includes recent declines...

Resource Type:

Dissertation

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. Biga for the degree of Doctor of Philosophy in Environmental Science presented on November 5, 2013
Ecological aspects of kin discriminating behavior with implications of functional value

Creator:

Hokit, D. Grant

Abstract:

To assess the context dependence of kin discriminating behavior, I examined kin-biased aggregation behavior in tadpoles of R. cascadae in different ecological conditions. I manipulated food distribution, predator presence, thermal heterogeneity, and relatedness in a multifactorial mesocosm experiment. All four factors interacted to influence tadpole dispersion. My results suggest that...

Resource Type:

Dissertation

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km west of Bend, Oregon, U.S.A.; 3 km north of Todd Lake in the Deschutes National Forest. Two
The effects of pathogens, UV-B radiation, and introduced species on amphibians in the Pacific Northwest

Creator:

Kiesecker, Joseph Michael

Abstract:

I examined two amphibian communities to assess factors that may impact amphibian biodiversity. The results suggest that the potential factors which influence the maintenance of amphibian biodiversity are multi-faceted and thus, attempts to understand these factors must reflect these complexities. I investigated factors that influenced the susceptibility of western toad...

Resource Type:

Dissertation

Full Text:

species on amphibians in the Pacific Northwest AN ABSTRACT OF THE THESIS OF Joseph M. Kiesecker for
Emerging infectious disease in lentic environments : the ecology and biogeography of the amphibian chytrid fungus Batrachochytrium dendrobatidis, with perspectives on water quality, limnology, and chemical contaminants

Creator:

Chestnut, Tara

Abstract:

Biodiversity losses in terrestrial, freshwater, and marine systems are accelerating at a global scale and the most threatened vertebrate taxa are those associated with freshwater habitats. The causes of biodiversity losses are often complex and include synergistic effects of natural and human-induced stressors, such as habitat loss and fragmentation, urbanization,...

Resource Type:

Dissertation

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, Oregon, USA, sampled quarterly for 12 months
Host parasite relationships between deer mice (Peromyscus maniculatus) and their eimerian parasites (protozoa)

Creator:

Fuller, Claire A.

Resource Type:

Dissertation

Full Text:

animals were conducted in MacDonald Forest, Oregon State University's experimental forest (approx. 15
Host-pathogen dynamics in a changing environment : susceptibility of amphibians to an emerging infectious disease

Creator:

Searle, Catherine L.

Abstract:

Infectious diseases are a growing concern for both humans and wildlife. The negative effects of infectious disease have been exemplified by the recent global amphibian population declines associated with disease outbreaks. Although multiple pathogens and factors play a role in these declines, the aquatic fungal pathogen, Batrachochytrium dendrobatidis (Bd), has...

Resource Type:

Dissertation

Full Text:

simply being my best friend. This research was funded by an Oregon Zoo Foundation Future for Wildlife
The effects of an emerging pathogen on amphibian host behaviors and interactions

Creator:

Han, Barbara A.

Abstract:

Contemporary environmental change encompasses massive biodiversity loss and increasing numbers of emerging diseases worldwide. As part of a global biodiversity crisis, amphibians are disappearing at unprecedented rates. Batrachochytrium dendrobatidis is an emerging infectious pathogen prominently associated with many declines. Chapter 1 reviews the past decade of research on this system...

Resource Type:

Dissertation

Full Text:

Paoletti, thank you for bringing a few needed moments of Oregon sunshine to the stressful final days of
Complexity in host-pathogen dynamics : dispersal uncertainties, metapopulation persistence and the role of a changing climate

Creator:

Xie, Yang

Abstract:

Emerging infectious diseases impact both human and wildlife populations. Infectious agents, in particular the aquatic fungus Batrachochytrium dendrobatidis (chytrid), have an influential role in driving global amphibian population declines. The emergence of the chytrid fungus has aspects of both geographic spread as well as climate shifts altering environmental conditions and...

Resource Type:

Dissertation

Full Text:

comprehensive exams for my concurrent masters in statistics – you were proud and excited, as well as

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Academic Affiliation

Zoology12
Integrative Biology3

Advisor

Blaustein, Andrew R.[remove]20
Garcia, Tiffany1
Olson, Deanna1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1993 to 2021

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Committee Member

Menge, Bruce6
Jolles, Anna4
Bartholomew, Jerri L.2
Beatty, Joseph2
Gregory, Stan2
more Committee Members »

Creator

Bancroft, Betsy A.1
Biga, Lindsay M.1
Bradley, Paul W.1
Buck, Julia C.1
Chestnut, Tara1
more Creators »

Date

Date range begin – Date range end

Current results range from 1993 to 2020

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Decade

2020-20291
2010-20199
2000-20096
1990-19994

Degree Field

Zoology13
Environmental Sciences5
Integrative Biology2

Degree Level

Doctoral20

Degree Name

Doctor of Philosophy (Ph.D.)[remove]20

File Format

application/pdf3

Language

English [eng]20

License

All rights reserved13

Non-Academic Affiliation

Oregon State University. Graduate School19

Peer Reviewed

No19

Resource Type

Dissertation20

Rights Statement

In Copyright14
Copyright Not Evaluated6

Subject

Amphibian declines5
Amphibian declines -- Oregon3
Batrachochytrium dendrobatidis3
Chytridiomycosis2
Environmental toxicology -- Oregon2
more Subjects »

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