This dissertation re-examines the now standard perceptual model of hillslope
hydrological response to rainfall, which includes the growth of a saturated wedge at the soil-bedrock interface or impeding layer. It also challenges the notion of bedrock impermeability and the assumption that the pattern of subsurface stormflow is determined by the...
The growing population of Oregon’s Willamette River Basin places an increasing demand on the basin’s surface waters. Watershed-scale research addressing spatial trends of dissolved nitrogen (DN) and its relationship with landuse and soil N dynamics, such as N mineralization, is sparse in the Willamette Basin. I measured DN along 124...
The links between forests, streamflow, and climate are poorly understood. Despite hundreds of studies over the past 60 years, fundamental questions of forests' effects on the hydrologic cycle remain unanswered. The hydrological cycle involves mutually-dependent biological and physical processes that operate at multiple scales of time and space, and this...
Object Watershed Link Simulation (OWLS) is a physically based watershed model. In the OWLS
model, a watershed is defined as a three-dimensional object with linkages between cells and their
attributes (e.g., area, slope, soil type, etc.). A cell is defined as the linkages of edges and their attributes
(e.g., length,...
The purpose of this study was to explore the relationship
between social acceptance and observed peer interaction in a select
group of preschool children.
The subjects were 30 children enrolled
in two sessions of a child development laboratory sponsored by the
Department of Family Life at Oregon State University.
The...
Succession and organization of rocky intertidal zone surfgrass beds
(Phyllospadix scouleri Hook) were examined experimentally at two sites
on the Oregon coast. The interaction of three attributes of the plant
-- high persistence, high preemption, and slow recovery -- strongly
influences the organization of surfgrass beds. Permanent plots indicate
that...
Workers in colonies of European honey bees Apis mellifera L. clean their
nestmate's body by allogrooming behavior. This behavior may be initiated by
either grooming dancers or by the allogroomers themselves. The first occurs
less frequently (ca. 17 %) than the later (83 %). By using the inner edge of...
The purpose of this study was to explore the relationship between
self concept and behavioral understanding in a group of prospective
preschool teachers. The subjects were 64 female college students
enrolled in either an early childhood education or Child Development/
Family Life program. These students had completed most of the...
The elderly population in our society is increasing both in number
and proportion, with the life expectancy of women increasing more than
men. Their needs have been given increased attention in recent years.
Many studies have been done on clothing for older women, but few have
dealt with the older...
This study focused on the relationship between energy related
behaviors prior to and following structural modifications of the
residence. If energy saving structural modifications are made, will
there also be a concommitant change in energy conserving behavioral
practices? The objectives of this study were: 1) to create a profile of...