Index Catalog // ScholarsArchive@OSU

Use of extractable lipofuscin as an age biomarker to determine age structure of ghost shrimp (Neotrypaea californiensis) populations in west coast estuaries

Creator:: Cassidy, Katelyn M.
Abstract:: Determining age in crustaceans is inherently imprecise because they molt periodically and do not retain hard structures throughout their lifespan. Morphological measurements, such as carapace length, are often used to estimate age because methods for direct ageing do not exist. However, variability in individual growth rate and molt frequency can...
Resource Type:: Masters Thesis
Full Text:: Cassidy Thesis AN ABSTRACT OF THE THESIS OF

Advancing forced draft biomass cookstove technology with computational fluid dynamics modeling

Creator:: Cassidy, Liam J
Abstract:: Today, billions of people are limited to using biomass-fueled traditional fires as a primary energy source for cooking and purification of drinking water. Reliance on open burning of biomass leads to exposure to high levels of household air pollution which has been estimated to claim over 1.5 million lives annually,...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Liam Cassidy for

The effect of burrowing mammals on the hydrology of a drained riparian ecosystem

Creator:: Cassidy, James Richard
Abstract:: Many species of rodents and insectivores live in subterranean burrows in soils throughout the world. The soil surface perforations of burrow entrances are often connected to complex, subsurface tunnel networks. Burrow entrances and associated subsurface tunnel networks represent a link between surface and subsurface ecological function. Anecdotal observations of surface-water...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF James Richard Cassidy for the

Comparing vegetation and soils of remnant and restored prairie wetlands in the northern Willamette Valley

Creator:: Taylor, Sara M.
Abstract:: Native prairies of the Willamette Valley are considered among the rarest of Oregon's ecosystems (Clark and Wilson, 2001). As a result of agriculture conversion, urban development and cessation of native burning, Willamette Valley prairies have become highly fragmented and invaded by non-native species, leaving little room for native plant diversity....
Resource Type:: Masters Thesis
Full Text:: cover than remnant prairie (p-value=0.089, N=6). Remnant and restored sites did not differ in

The legacy of Dr. Francis Hole : examining soil organic carbon after 50 years of detrital manipulation

Creator:: Townsend, Kimberly L.
Abstract:: Models of ecosystem carbon (C) balance generally assume a strong relationship between net primary productivity (NPP), litter inputs, and soil C accumulation, but there is little direct evidence for such a coupled relationship. Using a unique 50-year detrital manipulation experiment in a in a mixed deciduous forest and restored prairie...
Resource Type:: Masters Thesis
Full Text:: Costech CHN elemental analyzer. δ13C Isotopic analysis Carbon, N and δ13C for bulk soil and density

Olives in Oregon: Grower Survey, On-Farm Propagation, and Orchard Establishment in a Non-Traditional Growing Region

Creator:: Barker, Tessa A.
Abstract:: Olive production potential in Oregon was researched in a multi-disciplinary approach, including a grower survey, a propagation greenhouse study, and a field study, from 2018 through 2020. The Oregon Olive Grower Survey was designed to collect information relating to orchard establishment and management practices, knowledge and understanding of these practices,...
Resource Type:: Masters Thesis
Full Text:: for their support in serving on my committee; James Cassidy, for re-invigorating my love of plants

Depression risk : an examination of rural low income mothers

Creator:: Guyer, Amy M.
Abstract:: This study used a multi-method approach to explore factors associated with high and low depression in a sample of rural mothers living in poverty. From a sample of 117 women with very high or very low CES-D depression scores, 40 cases were randomly selected for in-depth qualitative analysis. Qualitative comments...
Resource Type:: Masters Thesis
Full Text:: Risk: An Examination of Rural Low Income Mothers. Abstract approved: Leslie N. Richards This study

Health, well-being, and financial self-sufficiency of low-income families in the context of welfare reform

Creator:: Corson, Corinne
Abstract:: The Personal Responsibility and Work Reconciliation Act of 1996 brought several changes to the welfare system. Among these changes are lifetime limits for receiving welfare benefits, and work requirements intended to foster economic self-sufficiency in welfare recipients. In the past few years, it has been acknowledged that there are challenges...
Resource Type:: Masters Thesis
Full Text:: Reform. Abstract approved: Leslie N. Richards The Personal Responsibility and Work Reconciliation

Ecology of the northern subpopulation of northern anchovy (Engraulis mordax) in the California Current large marine ecosystem

Creator:: Litz, Marisa N. C.
Abstract:: Northern anchovy (Engraulis mordax) are a dominant forage fish in the California Current large marine ecosystem (CCLME). However, little is known about northern anchovy abundance, distribution, age structure, or population fluctuations relative to ocean conditions in the eastern boundary upwelling system off the U.S. West Coast. This thesis includes three...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Marisa N. C. Litz for the degree

Job Strain in Toddler Teachers : Associations with Classroom Quality

Creator:: Henry, Adrienne J. L.
Abstract:: This study examined four occupational health risks that contribute to job strain, the experience of infectious disease, musculoskeletal strain, job dissatisfaction, and depressive symptoms, for toddler teachers as predictors of classroom quality. Both the physical and social settings of early care and education (ECE) are influential in shaping children’s early...
Resource Type:: Masters Thesis
Full Text:: study reported clinical level depressive symptoms (16 or higher on the CES-D; Radloff, 1977

ScholarsArchive@OSU

Use of extractable lipofuscin as an age biomarker to determine age structure of ghost shrimp (Neotrypaea californiensis) populations in west coast estuaries

Advancing forced draft biomass cookstove technology with computational fluid dynamics modeling

The effect of burrowing mammals on the hydrology of a drained riparian ecosystem

Comparing vegetation and soils of remnant and restored prairie wetlands in the northern Willamette Valley

The legacy of Dr. Francis Hole : examining soil organic carbon after 50 years of detrital manipulation

Olives in Oregon: Grower Survey, On-Farm Propagation, and Orchard Establishment in a Non-Traditional Growing Region

Depression risk : an examination of rural low income mothers

Health, well-being, and financial self-sufficiency of low-income families in the context of welfare reform

Ecology of the northern subpopulation of northern anchovy (Engraulis mordax) in the California Current large marine ecosystem

Job Strain in Toddler Teachers : Associations with Classroom Quality

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