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

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

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

Family literacy programs : can they make a difference in parenting?

Creator:: Bailey, Sandra J.
Abstract:: Parenting education is a process of providing information to parents on the challenges of parenting, services available for families, and ideas on how to interact with children. The federal Even Start family literacy program, designed to increase the educational opportunities of parents and children, has a strong parenting education component....
Resource Type:: Dissertation
Full Text:: They Make a Difference in Parenting? Abstract approved: Leslie N. Richards Parenting education is

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

Informal social support and attrition among nonpartnered, rurally-located, poor mothers

Creator:: Amity, Frederica A.
Abstract:: This qualitative study used interview transcripts to find clues to attrition from a longitudinal study among nonpartnered, rurally-located, poor mothers, a generally vulnerable population with characteristics commonly associated with attrition (low-income, low levels of educational attainment, and rural location). Drawing on Rural Families Speak data, the author used the number...
Resource Type:: Dissertation
Full Text:: . Abstract approved: Alexis J. Walker Leslie N. Richards This qualitative study used interview

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

Getting Kids from Cradle to College: Parents’ Expectations and Support to College-Bound Children

Creator:: Ottusch, Timothy M.
Abstract:: Increasing numbers of individuals aspire to, seek out, and need a college degree in order to be competitive in the job market (Goyette, 2008; U.S. Department of Education, 2013). College degrees provide access to economic, social, and health benefits (Abel & Deitz, 2014; Autor, 2014). The United States also needs...
Resource Type:: Dissertation

ScholarsArchive@OSU

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

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

Depression risk : an examination of rural low income mothers

Family literacy programs : can they make a difference in parenting?

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

Informal social support and attrition among nonpartnered, rurally-located, poor mothers

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

Getting Kids from Cradle to College: Parents’ Expectations and Support to College-Bound Children

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