Index Catalog // ScholarsArchive@OSU

Songbirds as sentinels of mercury in terrestrial habitats of eastern North America

Creator:: Jackson, Allyson K., Evers, David C., Adams, Evan M., Cristol, Daniel A., Eagles-Smith, Collin, Edmonds, Samuel T., Gray, Carrie E., Hoskins, Bart, Lane, Oksana P., Sauer, Amy, and Tear, Timothy
Abstract:: Mercury (Hg) is a globally distributed environmental contaminant with a variety of deleterious effects in fish, wildlife, and humans. Breeding songbirds may be useful sentinels for Hg across diverse habitats because they can be effectively sampled, have well-defined and small territories, and can integrate pollutant exposure over time and space....
Resource Type:: Article

Long Term Trends and Sources of Sound in United States Waters

Creator:: Haver, Samara M.
Abstract:: Passive acoustic monitoring is a valuable tool for observing the status of marine environments. Comparisons of underwater soundscapes over temporal and spatial scales can provide data to inform marine conservation efforts, including protection of threatened and endangered species. This dissertation utilizes passive acoustic data collected via a broadly spaced array...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Samara M. Haver for the degree of Doctor of Philosophy in

Patterns of coastal cutthroat trout survival in two headwater stream networks

Creator:: Berger, Aaron M.
Abstract:: Mark-recapture methods were used to examine watershed-scale survival rates of coastal cutthroat trout (Oncorhynchus clarkii clarkii) from two headwater stream networks located in the foothills of the Cascade Mountain Range, Oregon. Differences in survival were explored among spatial (stream segment, stream network [main stem or tributaries], and watershed) and temporal...
Resource Type:: Masters Thesis
Full Text:: THESIS OF Aaron M. Berger for the degree of Master of Science in Fisheries Science presented on

The Soundcheck of the Sea : Comparing Marine Soundscapes on a Continental Scale

Creator:: Haver, Samara M.
Abstract:: Monitoring marine ambient sound using standardized methods supports assessments of ocean sound levels across widespread ecosystems. This thesis quantifies differences among coastal and deep-water marine soundscapes in the Atlantic and Pacific oceans. The sources of sound in a soundscape are compartmentalized into three components and compared over time and among...
Resource Type:: Masters Thesis
Full Text:: THE THESIS OF Samara M. Haver for the degree of Master of Science in Wildlife Science presented on

Using parasite community data and population genetics for assessing Pacific sardine (Sardinops sagax) population structure along the west coast of North America

Creator:: Baldwin, Rebecca E. B.
Abstract:: Pacific sardines (Sardinops sagax) are an economically and ecologically important forage fish which transfer energy from planktonic primary producers and secondary consumers to upper trophic predators. Previous genetics studies of Pacific sardine suggested a panmictic population with a shallow genetic structure. However, more than one subpopulation within the Central California...
Resource Type:: Dissertation
Full Text:: trematode M. ecaude using a 283bp portion of the NADH- dehydrogenase subunit 1 (ND1) mitochondrial DNA

Husbandry stress of Zebrafish, Danio rerio

Creator:: Ramsay, Jennifer Mara
Abstract:: Zebrafish, Danio rerio, are widely used as vertebrate research organisms yet little is know about their responses to husbandry stressors. This dissertation examined the whole-body cortisol responses of zebrafish to husbandry stress. Additionally, the effects of stress on the susceptibility to mycobacteriosis and microsporidiosis (Pseudoloma neurophilia) were determined including effects...
Resource Type:: Dissertation
Full Text:: among infected fish without stress. Stressed fish, injected with M. chelonae were 15-fold more likely

Disturbance and roosting ecology of California brown pelicans (Pelecanus occidentalis californicus) on East Sand Island in the Columbia River Estuary

Creator:: Wright, Sadie K.
Abstract:: The California brown pelican (Pelecanus occidentalis californicus) is listed as an endangered species under the U.S. Endangered Species Act. The Recovery Plan for this subspecies outlines the need to "Assure long-term protection of adequate food supplies and essential. . .roosting. . . habitat throughout the range." I investigated the effects...
Resource Type:: Masters Thesis
Full Text:: collecting time-activity budget data for pelicans roosting in a study plot that encompassed 136 m of

Predation on an Upper Trophic Marine Predator, the Steller Sea Lion: Evaluating High Juvenile Mortality in a Density Dependent Conceptual Framework

Creator:: Horning, Markus and Mellish, Jo-Ann E.
Abstract:: The endangered western stock of the Steller sea lion (Eumetopias jubatus) - the largest of the eared seals - has declined by 80% from population levels encountered four decades ago. Current overall trends from the Gulf of Alaska to the Aleutian Islands appear neutral with strong regional heterogeneities. A published...
Resource Type:: Article
Full Text:: differential impact of predation on multiple vital rates. Citation: Horning M, Mellish J-AE (2012) Predation

Development of a progeny marker for steelhead

Creator:: Shippentower, Gene E.
Abstract:: This study was undertaken to determine if strontium chloride could be used to create a trans-generational otolith mark in steelhead (Oncorhynchus mykiss). I completed two strontium injection trials and a survey of juvenile steelhead from various steelhead hatcheries. The two trials measured Sr:Ca ratios in otoliths in response to injections...
Resource Type:: Masters Thesis
Full Text:: cooler into a storage unit for steelhead eggs. I would like to thank Paul Kissner and Carrie Crump

Conservation and spatial use analyses for the recovery of bighorn sheep in the Peninsular Ranges

Creator:: Ostermann, Stacey D.
Abstract:: The status of wild sheep in North America typifies the plight of many wildlife species in modern times: wild sheep have declined to 10-40% of their numbers during pristine times and on a global scale approximately 31% of Caprine are considered threatened or critical. As human populations and the number...
Resource Type:: Masters Thesis
Full Text:: . I thank my aunt, Susie Pace, and my friends, Carrie S. McNeil and Eli Perro, for providing support

ScholarsArchive@OSU

Songbirds as sentinels of mercury in terrestrial habitats of eastern North America

Long Term Trends and Sources of Sound in United States Waters

Patterns of coastal cutthroat trout survival in two headwater stream networks

The Soundcheck of the Sea : Comparing Marine Soundscapes on a Continental Scale

Using parasite community data and population genetics for assessing Pacific sardine (Sardinops sagax) population structure along the west coast of North America

Husbandry stress of Zebrafish, Danio rerio

Disturbance and roosting ecology of California brown pelicans (Pelecanus occidentalis californicus) on East Sand Island in the Columbia River Estuary

Predation on an Upper Trophic Marine Predator, the Steller Sea Lion: Evaluating High Juvenile Mortality in a Density Dependent Conceptual Framework

Development of a progeny marker for steelhead

Conservation and spatial use analyses for the recovery of bighorn sheep in the Peninsular Ranges

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