Index Catalog // ScholarsArchive@OSU

Emergency contraceptive pills and college women : factors influencing intention and use

Creator:: Nelson, Heather A.
Abstract:: Approximately half of the 6.4 million pregnancies occurring each year in the United States are unintended (Finer & Henshaw, 2006). Unintended pregnancies, defined as pregnancies not wanted at the time conception occurs, regardless of contraceptive use (Chandra, Martinez, Mosher, Abma, & Jones, 2005) can have serious repercussions on women, children,...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Heather A. Nelson for the degree of Doctor of Philosophy in

The influence of pollinators on the maintenance of mixed mating in a population of the blue columbine, Aquilegia coerulea (Ranunculaceae)

Creator:: Sweet, Heather R.
Abstract:: Pollination ecology may play an important role in the maintenance of selfing in populations of self-compatible hermaphroditic plants where both selfing and outcrossing occur (mixed mating). Behavior and abundance of pollinators can influence the two major modes of selfing; autogamy (selfing within a flower) and geitonogamy (selfing between flowers on...
Resource Type:: Masters Thesis
Full Text:: OF Heather R. Sweet for the degree of Master of Science in Botany and Plant Pathology

Seedborne Phytophthora infestans : effect of pathogen clonal lineage and potato cultivar on seed transmission of late blight and plant growth responses

Creator:: Partipilo, Heather M.
Abstract:: Seed piece to plant transmission of the potato late blight pathogen, Phytophthora infestans, occurred with isolates of the clonal lineages US-8 in Oregon and US-11 in Washington in field trials. Average transmission rate across potato cultivars was 0.5 and 2.4% with US-8, and 0.8 and 1.0% with US-11 in 1999...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Heather M. Partipilo for the

Soil organic matter management and root health

Creator:: Darby, Heather
Abstract:: Annual applications of fresh or composted dairy manure were assessed for their effects on root rots of sweet corn and snap bean and damping-off of cucumber in a field soil. Soil biological and physical properties were measured as possible indicators of root rot suppressive potential. Regardless of amendment type or...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Heather M. Darby for the

Remediation of atrazine in irrigation runoff by a constructed wetland

Creator:: Runes, Heather B.
Abstract:: Due to its frequent use in agriculture and its frequent detection in surface water, atrazine was chosen as a model compound to study the treatment capability of a surface flow wetland used to remediate irrigation runoff at a container nursery near Portland, Oregon. Further evaluation of treatment of atrazine was...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Heather B.Runes for the

Reproductive biology and behavior of the brown tree snake (Boiga irregularis) on Guam.

Creator:: Waye, Heather L.
Abstract:: While there are many more species of reptiles in the tropics than in temperate latitudes, relatively little is known about the natural history of tropical species of snakes. Even basic information, such as reproductive ecology and behavior, is lacking. Patterns of reproduction in tropical species differ from patterns in temperate...
Resource Type:: Dissertation
Full Text:: dissertation AN ABSTRACT OF THE DISSERTATION OF Heather L. Waye for

Partial melting of tonalite at the margins of a Columbia River Basalt Group dike, Wallowa Mountains, northeastern Oregon

Creator:: Petcovic, Heather L.
Abstract:: Columbia River Basalt Group dikes cut the tonalite-granodiorite Wallowa Batholith in northeastern Oregon, providing a natural setting in which to examine partial melting. Many dikes have up to 5 m-wide zones of quenched partially melted wallrock at their margins. This paper examines the progressive partial melting reactions in biotite-and hornblende-bearing...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Heather L. Petcovic for the degree

Seed bank response to juniper expansion in the semi-arid lands of Oregon, USA

Creator:: Duncan, Corinne M.
Abstract:: Expansion of Juniperus occidentalis into the sagebrush steppe has resulted in significant changes in understory composition. A consequence of increased J. occidentalis dominance may be a depletion of the seed bank. The potential for depletion is problematic because a reduction in the amount of species available from the seed bank...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Richard F. Miller Expansion of Juniperus occidentalis into the sagebrush steppe has

Yaquina Bay bibliography, January 2006

Creator:: Webster, Janet G. and Hiveley, Heather
Abstract:: Estuaries are once again emerging as important ecosystems for scientific study. Consequently, knowledge of what research has been conducted helps us identify benchmarks and plan new projects. A comprehensive bibliography of published research, technical reports, local documents, and data sets is one means of recording this knowledge. Yaquina Bay, located...
Resource Type:: Other

Linking greater sage-grouse habitat use and suitability across spatiotemporal scales in central Oregon

Creator:: Freese, Mark T.
Abstract:: Greater Sage-grouse (Centrocercus urophasianus) habitat research has historically focused on fine-scale (0.007 - 0.032 ha) vegetation structure and composition immediately surrounding sites selected by birds. However, little work has evaluated vegetation attributes important for Greater Sage-grouse at a landscape-scale or identified landscape attributes that influence habitat use patterns. Habitat use...
Resource Type:: Masters Thesis
Full Text:: approved: _____________________________________________________________________ Richard F. Miller

ScholarsArchive@OSU

Emergency contraceptive pills and college women : factors influencing intention and use

The influence of pollinators on the maintenance of mixed mating in a population of the blue columbine, Aquilegia coerulea (Ranunculaceae)

Seedborne Phytophthora infestans : effect of pathogen clonal lineage and potato cultivar on seed transmission of late blight and plant growth responses

Soil organic matter management and root health

Remediation of atrazine in irrigation runoff by a constructed wetland

Reproductive biology and behavior of the brown tree snake (Boiga irregularis) on Guam.

Partial melting of tonalite at the margins of a Columbia River Basalt Group dike, Wallowa Mountains, northeastern Oregon

Seed bank response to juniper expansion in the semi-arid lands of Oregon, USA

Yaquina Bay bibliography, January 2006

Linking greater sage-grouse habitat use and suitability across spatiotemporal scales in central Oregon

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