Anammox (anaerobic ammonium oxidation) bacteria are capable of providing low-cost nitrogen removal for numerous types of wastewaters. However, low growth rates cause long startup-times and inhibition by oxygen and metabolic substrates necessitate close process control to maintain performance. Incorporation of Simultaneous Anammox and Denitrification (SAD) into constructed wetlands could provide...
A dissertation describing the results of a series of greenhouse experiments conducted to better understand phytoremediation in stormwater bioretention systems.
This study identified some of the ways that multiethnic women describe their ethnic
identities, how they perceive ethnic-specific gender identities and what they think are
appropriate norms for, and effective outcomes of, communicative behavior. Twelve
multiethnic women described their ethnic identity names or labels, and ethnic-specific gender
identities; they also...
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This biological assessment (BA) documents the potential effects of existing Forest Service (FS) Land and Resource Management Plans (LRMPs), or 'Forest Plans' and Bureau of Land Management (BLM) Land Use Plans (LUPs) on the Canada Lynx (Lynx canadensis), hereafter referred to as the lynx. LRMPs and LUPs are collectively referred...
This report summarizes the outcomes of a March 22-25, 2010, workshop in Seattle, Washington, on the environmental effects of tidal energy development. The workshop focused on building capabilities to evaluate the environmental effects of tidal energy from turbines placed in the water column throughout the United States. However, it did...
This research assesses prescribed burning as a habitat management
technique in wetlands and associated upland communities of Malheur
National Wildlife Refuge, southeastern Oregon. Experimental burns
were conducted to evaluate fire behavior and effects in wetland and
upland habitats, and, fire effects on Cirsium arvense. Wetland plant
communities were monotypic stands...
This research assessed certain specific plant-soil and community
interrelationships in eastern Oregon habitat types dominated by
subspecies of Artemisia tridentata.
The first evaluation described plant-induced soil chemical patterns for Artemisia tridentata plant communities of high perennial
grass-low shrub and low perennial grass-high shrub composition. Soil
concentrations of total nitrogen, organic...
The effect of nitrogen on influencing the competitive balance between a shrub, Artemisia tridentata ssp. wyolningensis (ARTRW) and a perennial grass Stipa
thurberiana (STTH) in a sagebrush steppe community was determined. Nitrogen levels were altered on 5x5 in plots by applying 4.5 gun2 of nitrogen in the form of ammonium...
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...
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RichardF. Miller
Expansion of Juniperus occidentalis into the sagebrush steppe has
Biorhythm theory proponents believe that humans have
a 23-day physical cycle, a 28-day emotional cycle, and a
33-day intellectual cycle. According to biorhythm theories
a person in the positive portion of any single cycle, the performance potential is enhanced for those tasks related to
that particular rhythm. When each cycle...
This research evaluated the germination and early seedling
development response of two sources of bluebunch wheatgrass (Agropyron
spicatum) to a wide range of environmental conditions. Seeds collected near John Day, Oregon and Secar seed obtained from the Soil
Conservation Service were used in the investigations.
Evaluation of the germination response...
Purpose: The general problem was to determine the relationship between biorhythms and injuries to college football participants representing Oregon State University. Procedures: The population consisted of one hundred and ninty two football players representing Oregon State University who participated in the intercollegiate football seasons of 1981 and 1982. Injury data...
The objectives of this study were to evaluate the effects of site
potential, season and plant part on percent crude protein, percent
digestibility of dry matter and yield of cereal residues. Three cereal
types, club wheat (Triticum aestivum) tall, bearded wheat (T.
aestivum), and barley Hordeum vulgare) were examined.
Stress...
Since European American settlement of the Intermountain Region, dramatic changes in vegetation composition and structure have occurred in the sagebrush steppe ecosystem. Western juniper (Juniperus occidentalis spp. occidentalis Vasek), although indigenous to the Intermountain Region, has increased since the late 1800s. Considerable work has been done documenting juniper woodland expansion...