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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 140 for “"Soil Characteristics"”.
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Life history biology and soil characteristics of two species of Arctomecon (Papaveraceae)
… data as well as vegetative associates and soil characteristics for Arctomecon californica Torr. and Frem. and Arctomecon merriamii Cov. were collected. Results for the life history and reproductive data show that the highest mortality in both species occurs at the seedling stage. Loss of …
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Wood compost process engineering, properties and its impact on extreme soil characteristics
… as well as means of increasing or preserving soil organic matter. This research aimed to contribute to the identification of a system for managing the production and utilization of wood waste (Quercus rubra and Pinus sylvestris) compost for sustainable agriculture, with particular regards to …
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Development of Urban Tree Growth Models Based on Site and Soil Characteristics
… was therefore to characterize a broad suite of soil characteristics associated with urban tree plantings and evaluate their suitability for modeling physical dimensions and growth rates of urban trees. A series of observational studies and experiments was conducted on urban soils inhabited by …
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Effects of Disturbance History on Forest Soil Characteristics in the Southern Appalachian Mountains
Minimally disturbed virgin forest soils in the Little Santeetlah Creek (LSC) watershed of western North Carolina were sampled along with soils from the adjacent disturbed Slickrock Creek (SRC) watershed. Soils with similar elevation/landform/vegetation/parent material characteristics were initially …
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A comparison of soil characteristics in relation to success of a restored prairie
… plots. It was determined that differences in the soil composition may be the cause of the lack of success in Subarea 2C because it also had light soil color, higher clay content, and lower silt content compared to the other three permanent plots. This study attempts to determine the soil …
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Distribution and Soil Characteristics Associated with the Neches River Rose-Mallow (Hibiscus dasycalyx)
… Hibiscus species were used to measure select soil characteristics and habitat variables associated with each of the rose-mallows. <em>H. dasycalyx</em> was concluded to be associated with more fertile soils and slightly more canopy coverage than <em>H. laevis</em> and <em>H. moscheutos</em>. …
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Floral abundance and soil characteristics affect wild bee community structures and nesting dynamics in tallgrass prairies
… displacing native bees in prairie ecosystems. Soil characteristics could also affect bee community structure and nesting rates on prairies because most bees nest underground for the majority of their lives. In Chapter 2, I investigate the soil characteristics within the four management …
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The use of geomorphological and pedological soil characteristics to assess planar borrowing at a Mandan Indian village, North Dakota
… of earth-moving behavior unique to the region. A soil-coring program was conducted with: transects both within the village and in an adjacent area of similar, relatively undisturbed soil to serve as a control. An underlying, contiguous paleosol (Early Holocene) is used as the stratigraphic …
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Evaluation of reclaimed coal-mined prime farmland based on soil characteristics in lieu of the current yield-based approach
… for methods to expedite this process. A soil property-based model could relieve this burden and ensure the most efficient process for returning crop production fields to the landowner. The objective of my work was to develop a soil-based model to replace the current crop yield-based …
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The relation of soil characteristics and chemical constituents of soil solutions to the self corrosion of underground lead cable
… lead cable sheath that was effected by various soil characteristics and by various classes of soil solutions. The study was made entirely with laboratory specimens and solutions and while it was difficult to attain the desired results, yet results of sufficiently distinctive character were …
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Assessment of In-situ Corrosion Conditions at Nevada Mechanically Stabilized Earth Wall Sites: Using Electrochemical Soil Characteristics and Linear Polarization Resistance
The inability of soil to provide sufficient tensile strength presents challenges for soils being used as a structural building material. However, it is possible to improve the structural performance with the inclusion of a reinforcing system. The development of these systems has been a major …
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Assessment of Site and Soil Characteristics of Rill Erosion Following the Lockheed Fire in the Little Creek Watershed, Swanton Pacific Ranch
… determine how the impacts of the fire affect the soil physical properties where rill erosion occurred. In order to address this goal, the soil physical properties were characterized on two hillslopes influenced by three different types of parent material: Santa Cruz mudstone, Santa Margarita …
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The relative effect of soil changes associated with old-field succession and available moisture upon the growth of three upland tree species
… determine the relative effects of (1) changes in soil characteristics associated with old-field succession and (2) available moisture upon the growth of three upland tree species.
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Soil PH and clay content associated with chronic wasting disease in white-tailed deer in northern Illinois
Soil is an important reservoir for chronic wasting disease (CWD) which is a prion disease that infects cervids through both direct contact with infected animals and contact with contaminated environments. I built a boosted regression tree model that accurately predicted (AUC = 0.954) the …
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Ecological Community Changes and Ecosystem Functioning During Structured Wetland Development
… through 4 years of tidal regime post-breaching. Soil and sediment characteristics, and soil accretion were studied at the same time. All data were collected from permanent sample plots. Changes were compared with a managed brackish site (Otterhampton Marsh) with a similar starting state, and a …
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The Effects of Simulated <i> Spermophilus Franklinii </i> Burrowing on Prairie Soil Invertebrate Communities
… invertebrate communities, and surrounding soil characteristics. Franklin’s ground squirrel (<em>Spermophilus franklinii</em>) is a declining, tunneling mammal species previously found throughout Central Illinois. Preference for natural tallgrass prairie habitat with loose soil marks …
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Interação solo-estaca de plataformas offshore
Winkler springs are used to represent soil in the Structural Analysis of Offshore Platforms. The soil characteristics for the non-linear soil behaviour are obtained from laboratory tests or using full scale loaded piles. The API Code through the "P-Y" curves, defines the stress-strain soil …
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Value of soil sampling and optimal sampling density for a variable rate seed application
Grid soil sampling has become one of the most popular and powerful methods to investigate soil characteristics in various crop input application experiments. Based on the recommendations of previous literature, farmers and researchers believe that a single sample per hectare is the optimal sampling …
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