Index Catalog // ScholarsArchive@OSU

Nutrient management and cycling in grass seed crops

Creator:: Horneck, Donald Arthur
Abstract:: Grass seed production in Oregon's Willamette Valley traditionally relied on open field burning for straw residue disposal and nutrient recycling. Changes in residue management from open field burning to methods that remove straw coincided with rapidly declining K soil test values. A survey of grass seed fields showed that many...
Resource Type:: Dissertation
Full Text:: CYCLING IN GRASS SEED CROPS Abstract approved: John Hart Grass seed production in Oregon's Willamette

Morphometric properties of nivation hollows on Hart Mountain, Lake County, Oregon

Creator:: Rademacher, Christopher L.
Abstract:: Hart Mountain is a basaltic fault block mountain in the semi-desert region of the northern Basin and Range province in south-central Oregon. Geomorphic processes associated with lingering snowpatches have formed nivation hollows, which are small scale depressions in the hillsides. The lingering snow in the hollows prohibits shrub growth. Bedrock...
Resource Type:: Masters Thesis
Full Text:: ...tt)r HART MOUNTAIN VALLEY NATIONAL ANTELOPE PLUS REFUGE Hart Lake LAKEVIEW or Crump Lake ADEL

A fluorescein tracer release experiment in the hydrothermally active crater of Vailulu'u volcano, Samoa

Creator:: Hart, Stanley R., Staudigel, H., Koppers, Anthony A. P., and Girard, A. P.
Abstract:: On 3 April 2001, a 20 kg point source of fluorescein dye was released 30 m above the bottom of the active summit caldera of Vailulu’u submarine volcano, Samoa. Vailulu’u crater is 2000 m wide and at water depths of 600–1000 m, with the bottom 200 m completely enclosed; it...
Resource Type:: Article
Full Text:: the hydrothermally active crater of Vailulu’u volcano, Samoa S. R. Hart,1 H. Staudigel,2 R. Workman

Assessing the robustness of web feature services necessary to satisfy the requirements of coastal management applications

Creator:: Bauer, Jennifer R.
Abstract:: Ever expanding pressures on the health and productivity of our oceans and coasts from threats such as coastal development and climate change are stressing the need to consider the full spectrum of factors, scales, datasets, opinions, and trade-offs for current and future coastal management actions (Guerry 2009; McLeod and Leslie...
Resource Type:: Presentation and Capstone Project

Linkages among land use, riparian zones, and uptake and transformation of nitrate in stream ecosystems

Creator:: Sobota, Daniel J.
Abstract:: Land use alters the physical and biological structure of stream ecosystems and potentially alters their capacity to process nitrogen (N), an essential nutrient that has nearly doubled in abundance on the biosphere during the past century from human activities. In this dissertation, I quantified uptake and transformation of nitrate (NO₃⁻)...
Resource Type:: Dissertation
Full Text:: Stanley V. Gregory Land use alters the physical and biological structure of stream ecosystems and

Vailulu'u Seamount

Creator:: Koppers, Anthony A. P., Staudigel, Hubert, Hart, Stanley R., Young, Craig, and Konter, Jasper G.
Abstract:: Vailulu’u seamount is an active underwater volcano that marks the end of the Samoan hotspot trail (Hart et al., 2000). Vailulu’u has a simple conical morphology (Figure 1) with a largely enclosed volcanic crater at relatively shallow water depths, ranging from 590 m (highest point on the crater rim) to...
Resource Type:: Article
Full Text:: , La Jolla, CA, USA. Stanley R. Hart is Scientist Emeritus, Department of Geology and Geophysics

Attitudes of secondary school science and non-science teachers toward certain science related societal issues

Creator:: Barnhart, Richard Burton
Resource Type:: Dissertation
Full Text:: this effort: Dr. Stanley E. Williamson for his example as a science educator throughout my graduate

Diversity and community structure of aquatic insects in isolated montane desert streams

Creator:: Bogan, Michael T.
Abstract:: Local aquatic insect diversity and community structure is the result of multiple local and regional factors, and observed patterns depend upon the spatial and temporal scale under examination. Isolated stream systems in arid regions represent a new challenge in understanding the drivers of diversity and community structure, as most studies...
Resource Type:: Masters Thesis
Full Text:: that there is life away from work. Many thanks to Dr. Stanley Gregory and Dr. Douglas Robinson for

Passage of juvenile cutthroat trout and steelhead through retrofitted culverts

Creator:: McEnroe, Jeffrey R.
Abstract:: Culverts and road crossings potentially create barriers that impede or prevent movement and migration of all life stages of resident and anadromous fish. There have been very few studies of juvenile salmonid movements through retrofitted (baffled) culverts in the field. Two separate studies were conducted to assess juvenile cutthroat trout...
Resource Type:: Masters Thesis

Estimating the dry matter production, nitrogen requirements, and yield of organic farm-grown potatoes

Creator:: McQueen, John Paul Gainer
Abstract:: As part of a participatory research project, where farmers and Oregon State University researchers collaborated, aspects of potato (Solanum tuberosum L.) growing systems were studied. It was determined through conversations with the farmers that quantification of certain growth parameters of potato was lacking, including dry matter accumulation, crop nitrogen (N)...
Resource Type:: Masters Thesis
Full Text:: for nitrogen in nonequilibrium soil-crop systems, In R. F. Follett, et al., eds. Managing nitrogen

ScholarsArchive@OSU

Nutrient management and cycling in grass seed crops

Morphometric properties of nivation hollows on Hart Mountain, Lake County, Oregon

A fluorescein tracer release experiment in the hydrothermally active crater of Vailulu'u volcano, Samoa

Assessing the robustness of web feature services necessary to satisfy the requirements of coastal management applications

Linkages among land use, riparian zones, and uptake and transformation of nitrate in stream ecosystems

Vailulu'u Seamount

Attitudes of secondary school science and non-science teachers toward certain science related societal issues

Diversity and community structure of aquatic insects in isolated montane desert streams

Passage of juvenile cutthroat trout and steelhead through retrofitted culverts

Estimating the dry matter production, nitrogen requirements, and yield of organic farm-grown potatoes

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