Global ETD Search
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 16 of 16 for “"Soil Stability"”.
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Plant communities in field margins of agricultural landscapes: species distributions, functional traits, and contributions to landscape function
… functions by supporting biodiversity, preventing soil erosion, contributing in nutrient cycling and improving soil stability. This thesis is aiming to further our understanding of the processes governing plant community structure and resulting functioning in agricultural field margins by focusing …
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Communities of Arbuscular Mycorrhizal Fungi in Salt Marsh Habitats: Diversity, Structure, and Ecosystem Function
… been shown to be important in nutrient cycling, soil stability and enhancing plant growth by increasing root mycelia, much of the information we have on them is restricted to a small sample of woodland and grassland habitats. Consequently, the mechanisms regulating the diversity and community …
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Soil Organic Matter Dynamics in Cropping Systems of Virginia's Valley Region
Soil organic matter (SOM) is a well known indicator of soil quality due to its direct influence on soil properties such as structure, soil stability, water availability, cation exchange capacity, nutrient cycling, and pH buffering and amelioration. Study sites were selected in the Valley region of …
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Effects of bank vegetation in waterways with special reference to bank erosion, shear strength, root density and channel hydraulics
… attempt is made to identify the effects on bank stability of colonisation of a bare bank by a wetland grass from seedling to maturity. The currently recommended practice of encouragement of secondary succession on banks is studied with comparisons on changes of erosion rates over a period of 25 …
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USING THE FORESTRY RECLAMATION APPROACH FOR RECLAIMED SURFACE MINELAND IN THE WESTERN GULF: EFFECTS ON PINUS TAEDA SEEDLING GROWTH AND SURVIVAL
… of surface mines have considerably increased soil stability since the implementation of SMCRA (Surface Mining Control and Reclamation Act), research suggests that resulting soil compaction hinders the productivity of forests post-mining. The Forestry Reclamation Approach (FRA) was developed to …
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The Influence of Plant Diversity on Soil Physical Properties in Grasslands.
… primary productivity, nutrient cycling and the stability of communities under environmental change. However, virtually nothing is known about the response of soil physical properties to plant biodiversity change, which represents a serious gap in our knowledge given the key role soil physical …
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Improving Erosion Resistance and Revegetation of Wildfire-Altered Soils Using Microbial Induced Calcite Precipitation
… and the environment. Wildfires affect soils by burning their organic matter, resulting in an immediate deplete of nutrients and a significant reduction in nitrogen level. Wildfires also alter soils’ physical properties and make them less resistant to erosion which results in debris …
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Understanding seed-soil adhesion by myxospermous seeds and their biophysical function in agroecosystems
… services that support wildlife and regulate soil function. The fate of arable seeds is vital in shaping the aboveground composition of plant communities in agroecosystems. Understanding seed fate informs seedbank dynamics with multi-species interactions, as well as safeguarding arable …
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THE ROLE OF ADAPTATION AND INFORMATION IN AGRICULTURAL SUSTAINABILITY AND RESILIENCE
… and fuel production as well as water filtration, soil stability, carbon sequestration, and biodiversity. Implementation of these adaptations can be difficult for multiple reasons, but information sources, experts, and communities can assist with adoption through the diffusion of information. To …
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Measuring and Understanding Effects of Prescribed Fire in a Headwater Catchment
… regarding how this disturbance affects catchment soils and resultant stream water chemistry. Effective assessment of prescribed fire thus requires coupled monitoring of both soil properties and water chemistry. In this thesis, I addressed two linked objectives: i) assess the effects of commonly …
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Experimental and numerical analysis of behaviour of the myxospermous seeds of Capsella bursa-pastoris (L.) Medik. (shepherd’s purse) in soil
… plant species adapted to surviving in arid sandy soils. The seed mucilage is composed of polysaccharides, which are capable of absorbing large volumes of water and it has been shown to be of significant ecological importance in terms of seed dormancy, germination and dispersion. However, the …
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THE SHORT- AND LONG- TERM EFFECT OF ZINC AND COPPER CONTAMINATION ON SOIL MICROBIAL FUNCTIONS
Soil microbial functions are vital for maintaining soil health and are therefore also essential for the provision of services required to support human and ecological health. The inadvertent release of trace metals into soil ecosystems through their extraction, processing, and use of metal ores has …
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Structure and natural regeneration in iberian pine forests: implications for management = Estructura y regeneración de los pinares ibéricos: implicaciones para la gestión
… of resources, including wildlife habitat, soil stability or non-timber forest products, while still providing for timber products revenue. Moreover, since natural regeneration of Mediterranean ecosystems is very uncertain and fraught with problems, and since future climate scenarios predict …
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Coupled Biogeochemical Cycles of Iron and Organic Carbon in Soils
Soil organic carbon (OC) is one of the largest carbon (C) reservoirs on the Earth's surface. Because of the high sorption affinity of iron (Fe) minerals for OC, the redox reactions of Fe potentially play an important role in regulating the stability and transformation of OC in soils. Fate of …
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Impact of Hydrate Dissociation on the Stiffness and Strength of Hydrate Bearing Sands
The escalating global energy demand has propelled the exploration of unconventional energy resources, notably natural gas hydrates. These ice-like compounds, abundant in permafrost and marine sediments, harbor vast quantities of methane, a potent energy source. However, conventional methods for …