Index Catalog // ScholarsArchive@OSU

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

Creator:: Viste-Sparkman, Karen
Abstract:: Habitat loss causes a reduction in available resources for wildlife, alters the configuration of remaining habitat, and may isolate wildlife populations. White-breasted nuthatches (Sitta carolinensis) are experiencing long-term population declines in the Willamette Valley of Oregon, where they are historically associated with oak woodlands. As secondary cavity-nesters, white-breasted nuthatches may...
Resource Type:: Masters Thesis
Full Text:: : White-breasted Nuthatch Density and Nesting Ecology in Oak Woodlands of the Willamette Valley, Oregon

Hydrogeologic field investigation and groundwater flow model of the southern Willamette Valley, Oregon

Creator:: Craner, Jeremy D.
Abstract:: Elevated groundwater nitrate (NO3 -) concentrations in the Southern Willamette Valley (SWV) caused the Oregon Department of Environmental Quality (ODEQ) to declare a Groundwater Management Area (GWMA) in Spring, 2004. To better understand direction of groundwater flow, groundwater age, and nitrate transport pathways of the SWV we developed a steady-state...
Resource Type:: Masters Thesis
Full Text:: Southern Willamette Valley, Oregon. Abstract approved: Roy Haggerty Elevated

Temporal and spatial variability of groundwater nitrate in the southern Willamette Valley of Oregon

Creator:: Mutti, Jeffrey Glenn
Abstract:: Groundwater nitrate contamination is a well-documented issue in the Southern Willamette Valley (SWV) of Oregon, as a Groundwater Management Area (GWMA) has recently been declared. As a GWMA, groundwater nitrate monitoring must occur until regional concentrations are below 7 mg/L NO3-N. However, the presence of temporal variability can make it...
Resource Type:: Masters Thesis
Full Text:: -documented issue in the Southern Willamette Valley (SWV) of Oregon, as a Groundwater Management Area (GWMA

Phenology and monitoring of the cabbage maggot, Delia radicum (L.), in brassica root crops

Creator:: Dreves, Amy J.
Abstract:: In Oregon’s northern Willamette Valley, cabbage maggot (CM), Delia radicum (L.) (Diptera: Anthomyiidae) often renders Brassica root crops unmarketable. Scheduled insecticides are the only current control. Studies were conducted to: 1) describe and characterize spring emergence of CM flies and their seasonal flight activity relative to degree-day (DD) accumulations; 2)...
Resource Type:: Dissertation
Full Text:: (.). ......................................................................8 3.1. Map offield study sites in northern Wilamete Valley, Oregon (Clackamas and Marion counties

Influence of vine vigor and shading in Pinot noir (Vitis vinifera L.) on the concentration and composition of phenolic compounds in grapes and wine

Creator:: Cortell, Jessica M.
Abstract:: In 2003 and 2004 vigor zones were delineated in two commercial vineyard sites based on vine growth variation to assess fruit and wine phenolic chemistry. In 2004, the effects of shading on the accumulation of phenolic compounds were also investigated. Model extractions were done from the shading experiment and the...
Resource Type:: Dissertation
Full Text:: to Oregon State University in partial fulfillment of the

Nine native Mexicans families in the Willamette Valley

Creator:: Cervantes, Willan A.
Abstract:: The Mixteco primarily reside in the Mexican State of Oaxaca in Southwestern Mexico. They have been arriving in larger numbers then ever before to this part of the North American continent in the last twenty years.Their experience is composed of different dynamics compared to those of their mainstream Mexican counterpart....
Resource Type:: Masters Thesis
Full Text:: Willamette Valley- Oregon USA. Presented in on defense Abstract approved

Influence of cover crops on vine performance at two Willamette Valley vineyards

Creator:: Sweet, Rebecca Marie
Abstract:: It is estimated that 50-75% of Oregon vineyards cultivate at least every other alley in order to 1) reduce water stress 2) increase vineyard canopy temperatures and 3) increase nutrient availability. Because many vineyards are situated on steep hillsides, frequent tillage could result in increased soil erosion, decreased soil quality...
Resource Type:: Masters Thesis
Full Text:: grasses native to upland prairie habitats in the Willamette Valley of Oregon, selected for their low

Specificity of quantitatively expressed host resistance to Mycosphaerella graminicola

Creator:: Krenz, Jennifer E.
Abstract:: The specificity of quantitative host resistance to plant disease has long been a controversial issue. We examined interactions between wheat (Triticum aestivum) and Mycosphaerella graminicola, causal agent of Septoria tritici blotch, to determine whether specific interactions occur between host and pathogen genotypes that could be involved in eroding quantitatively expressed...
Resource Type:: Masters Thesis
Full Text:: Willamette Valley of Oregon in 1999 and 2000………………………………………………………...25 3. Percent disease severity

Private forests, public policy : oak conservation on family forests in Oregon’s Willamette Valley

Creator:: Fischer, Alexandra Paige
Abstract:: In the United States, many of the thorniest natural resource conflicts occur on private lands. This is especially true in the Willamette Valley of Western Oregon where the hallmark habitat type, Oregon white oak woodland and savanna, is imperiled. Almost exclusively found on private land, Oregon white oak is threatened...
Resource Type:: Dissertation
Full Text:: occur on private lands. This is especially true in the Willamette Valley of Western Oregon where the

Plant community dynamics in remnant and restored Willamette Valley wetland prairies

Creator:: Schwindt, Rachel A.
Abstract:: Invasion by exotic species can pose a major challenge for developing native plant communities in wetland restoration projects. Often native plant communities do not develop as anticipated in restored wetlands due to colonization by exotic species that dominate the native plant community. Despite the time and expense to restore wetlands,...
Resource Type:: Masters Thesis
Full Text:: Willamette Valley in Oregon to determine if exotic species abundance was consistent between these groups

ScholarsArchive@OSU

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

Hydrogeologic field investigation and groundwater flow model of the southern Willamette Valley, Oregon

Temporal and spatial variability of groundwater nitrate in the southern Willamette Valley of Oregon

Phenology and monitoring of the cabbage maggot, Delia radicum (L.), in brassica root crops

Influence of vine vigor and shading in Pinot noir (Vitis vinifera L.) on the concentration and composition of phenolic compounds in grapes and wine

Nine native Mexicans families in the Willamette Valley

Influence of cover crops on vine performance at two Willamette Valley vineyards

Specificity of quantitatively expressed host resistance to Mycosphaerella graminicola

Private forests, public policy : oak conservation on family forests in Oregon’s Willamette Valley

Plant community dynamics in remnant and restored Willamette Valley wetland prairies

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