Index Catalog // ScholarsArchive@OSU

Soil compaction in central Oregon volcanic ash soils and the subsequent effects on residual ponderosa pine growth

Creator:: Parker, Robert T.
Abstract:: Although previous research in central Oregon has shown soil compaction can lead to a decline in site productivity, the subject is not understood well enough to predict the growth changes resulting from a given level of soil compaction. A study was initiated to relate the basal area, height and volume...
Resource Type:: Masters Thesis
Full Text:: degree of Master of Science in Forest Resources presented on August 24, 2000. Title: Soil Compaction in

Competitive relations for soil water in an experiment of soil compaction and organic residues in a young ponderosa pine-mixed shrub community

Creator:: Swearingen, Kurt A.
Abstract:: An experiment was established in 1992 in the central Sierra Nevada Mountains of California to assess the effects of high levels of surface organic residues, severely compacted soil, and shrub competition on the development of mixed conifer plantations. This study was conducted in 1997 to determine if selected combinations of...
Resource Type:: Masters Thesis

Response of Soil Temperature, Moisture, and Respiration Two Years Following Intensive Organic Matter and Compaction Manipulations in Oregon Cascade Forests

Creator:: Gallo, Adrian Carlos
Abstract:: Forest soils contain a substantial portion of global terrestrial carbon stores. Forest management can influence the soil carbon pool and how soil organic matter functions. The long-term productivity of forests is an ongoing goal where land managers utilize biomass and timber. A site-specific understanding of intensively managed forests can ensure...
Resource Type:: Masters Thesis
Full Text:: years to determine the effect of the treatments on soil carbon. I performed two kinds of statistical

Growth in herbaceous perennials

Creator:: Nakajima, Rie
Abstract:: Several studies of herbaceous perennials have addressed the effects of environmental factors during and after production, inherent cold hardiness, and post-harvest handling procedures to enhance flowering and growth during establishment. The regrowth of both woody and herbaceous forage plants following establishment is reported to be directly related to reserve-nitrogen content....
Resource Type:: Masters Thesis
Full Text:: to determine the effect of pre-washing on growth performance. After each plant was washed, it was

Suitability of diverse composts as soil amendments for highbush blueberry (Vaccinium corymbosum L.)

Creator:: Costello, Ryan C.
Abstract:: Highbush blueberry (Vaccinium corymbosum L.) is adapted to soils with high organic matter and acidic pH. Composts provide organic matter and nutrients for growing blueberry in mineral soils, but many composts are high in pH and soluble salts. Acidification with elemental sulfur (S°) can remedy high pH, but the process...
Resource Type:: Masters Thesis
Full Text:: less effect on soil pH and produced 20% greater plant growth than manure-based compost treatments

Response of Roughstalk Bluegrass (Poa trivialis L.) to Waterlogging Stress

Creator:: Liu, Mingyang
Abstract:: Roughstalk bluegrass (Poa trivialis L.) (RB) is a weed species that increased very quickly in grass seed production fields of the Willamette Valley. The invasion of RB in grass seed crops often occurs in waterlogged soils. In waterlogged areas, RB exhibited better competitiveness and had greater population densities than other...
Resource Type:: Dissertation
Full Text:: 30 C) increased the influence of oxygen deficiency on TF, but did not influence the effect of

Vegetation and soil microbial communities three years after wildfire in spruce-fir forests of northwestern Wyoming

Creator:: Hooke, Jennifer Suzanne
Abstract:: The Normalized Burn Ratio and Composite Burn Index were used to classify burn severity in three sites that experienced lightning-ignited wildfire in the year 2000. The effect of burn severity (unburned, low, moderate, and high severity classes) was investigated on vegetation and soil microbial community composition. Vegetation communities showed a...
Resource Type:: Masters Thesis
Full Text:: composition of the soil microbial community. It is difficult to generalize about the effect of fire on soil

Soil organic carbon response to six years of warming : assessing the impacts of altered diurnal temperature range

Creator:: Murphey, Virginia L. W.
Abstract:: There is a growing consensus that anthropogenic warming will impact soil organic matter (SOM). Globally, soil contains 2-3 times more carbon (C) than plants, and like plants, temperature induced change of SOM could have significant climate repercussions. Although, the majority of warming experiments have increased day and night temperatures equally,...
Resource Type:: Masters Thesis
Full Text:: Environmental Science presented on March 21, 2014 Title: Soil Organic Carbon Response to Six Years of

Spatial and temporal effects of atmospheric deposition, climate, and land management on forest nutrient cycling and biodiversity

Creator:: McDonnell, Todd C.
Abstract:: Emissions largely associated with the combustion of fossil fuels and agriculture has caused elevated atmospheric deposition of nitrogen (N) and sulfur (S) throughout much of the developed world. Increased atmospheric deposition of N and S can lead to soil and surface water acidification and affect forest soil nutrient supply. The...
Resource Type:: Dissertation
Full Text:: had the largest effect on stream sum of base cations (SBC) and soil BC supply. Each of the scenario

Belowground carbon storage and soil organic matter quality following fertilizer and herbicide applications in ponderosa pine plantations along a site-quality gradient in northern California

Creator:: McFarlane, Karis J., 1979-
Abstract:: Belowground carbon (C) storage and quality of soil organic matter (SOM) in forest soils have implications for sustainable forest management and C sequestration, but how these pools change in response to management is poorly understood. I investigated whether fertilization and competing vegetation control, applied alone or in combination early in...
Resource Type:: Dissertation
Full Text:: effect on total pools. Fertilizer increased whole-soil and light-density-fraction N and decreased C:N

ScholarsArchive@OSU

Soil compaction in central Oregon volcanic ash soils and the subsequent effects on residual ponderosa pine growth

Competitive relations for soil water in an experiment of soil compaction and organic residues in a young ponderosa pine-mixed shrub community

Response of Soil Temperature, Moisture, and Respiration Two Years Following Intensive Organic Matter and Compaction Manipulations in Oregon Cascade Forests

Growth in herbaceous perennials

Suitability of diverse composts as soil amendments for highbush blueberry (Vaccinium corymbosum L.)

Response of Roughstalk Bluegrass (Poa trivialis L.) to Waterlogging Stress

Vegetation and soil microbial communities three years after wildfire in spruce-fir forests of northwestern Wyoming

Soil organic carbon response to six years of warming : assessing the impacts of altered diurnal temperature range

Spatial and temporal effects of atmospheric deposition, climate, and land management on forest nutrient cycling and biodiversity

Belowground carbon storage and soil organic matter quality following fertilizer and herbicide applications in ponderosa pine plantations along a site-quality gradient in northern California

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