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 20 of 26 for “"hydrological regime"”.
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Hydrological regime changes in a Canadian Prairie wetland basin
… processes. This study evaluates the detailed hydrological impact of regional changes to climate on an instrumented research catchment, the Smith Creek Research Basin (SCRB); an unregulated, wetland and agriculture dominated prairie catchment in south-eastern Saskatchewan. Wetlands have been …
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Developing a classification system for Western Cape wetlands
… characteristics (drainage patterns, landform), hydrological pattern and timing of water availability, were recorded during winter and summer for each studied wetland. Water samples were also collected at the wetlands and analysed for ion and nutrient concentrations and samples of organisms were …
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The process of and barriers to environmentally-oriented real estate development : examining the role of organizational structure, project delivery methods and contracts in low impact development
… environmental impact of development on the local hydrological regime. By preserving and mimicking natural landscape features, LID introduces a new site planning and stormwater management paradigm to mainstream real estate development and represents a product innovation in the industry. Through the …
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Impact of climate variability and human activities on water resources.
… dam construction, etc.) interact and affect the hydrological regime in some selected basins in the semi-arid region of southeastern Spain. To conduct a comprehensive causal analysis, this PhD Thesis used the Soil and Water Assessment Tool (SWAT) hydrological model as the main tool and combined it …
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Synthesis of climate-water-food nexus in Illinois – data analysis and modeling
… temperature and precipitation were analyzed, the hydrological time-series data was also analyzed to determine if the climate change, and more specifically, precipitation change had driven any change in the hydrological regime. Under the condition that a shift in the hydrological regime is …
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Geochemical signals of volcanic unrest at the Virkisjökull Glacier Iceland
… data collected over four years revealed a hydrological system dominated by glacial meltwater and aquifer fed groundwater that varied both seasonally and spatially. Sulphate isotopes suggested that water chemistry is the result of a ternary mixing of three endmembers: precipitation, ice melt …
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Coastal Wetland Dynamics Under Sea-level Rise and Wetland Restoration in the Northern Gulf of Mexico using Bayesian Multilevel Models and a Web Tool
… river-borne sediment availability, indicated by hydrological regimes. These interactions have not been comprehensively investigated before. I further modified this model to assess the efficacy of restoration projects from 1996 to 2005 and predicted wetland loss by 2100 and 2300 under climate …
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Influence of summer snowfall on discharge emanating from the Gangotri glacier
… the study area. Data were used to determine the hydrological regime within catchment and to establish the general influence that air temperature and precipitation have on discharge, using regression and correlation analysis. Using a temperature lapse rate the daily average elevation for the 0 °C …
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Linking groundwater level fluctuations and water quality to vegetation and habitat condition in blanket bog ecosystems in Ireland
… island of Ireland to help determine baseline ecohydrological conditions on intact sites where data is lacking. Ireland acts as an important blanket bog reserve in the EU. The Habitats and Water Framework Directives afford protection to these ecosystems for the value that they provide to society …
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Cryogenic carbon cycling at an Icelandic glacier
… the Katla geothermal zone. This unique hydrological regime generates profound effects upon the solute flux from the glacier, particularly with regard to the carbon budget. Dissolved inorganic carbon dynamics are dominated by weathering of basaltic bedrocks and accessory hydrothermal …
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Dynamics of heavy metals in reedbeds along the banks of the river Scheldt
… during decomposition under field conditions. The hydrological regime to which metal-polluted sediments are subjected, affects the metal concentrations in the pore water to an important extent. Flooding of a calcareous sediment led to an increased mobility of Fe, Mn, Ni and Cr and a decreased …
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Assessment of the impacts of climate change, land cover transition, and internal climate variability on the hydrology of a forested watershed
… and numerous small lakes. A semi-distributed hydrological model, based on the Raven hydrological framework, is calibrated and validated using ground-based observations for 1981-2001 and 2002-2011, respectively. Eight downscaled General Circulation Models (GCMs) that participated in the Coupled …
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Spatiotemporal dynamics of grounwater in the Andean Highlands in northern Ecuador
… for environmental requirements and human supply. Hydrological modelling combined with saturated zone routed techniques is an effective strategy for evaluating the renewable water resources under stationary conditions prior forecasting climate and human impacts under plausible scenarios. This …
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GEOSPATIAL MODELLING OF PRAIRIE RIVERS: LINKING PHYSICAL INDICATORS OF FISH HABITAT TO LARGE SCALE GEOMORPHIC PATTERNS IN RIVER SYSTEMS USING GEOMORPHIC RESPONSE UNITS (GRU)
… character that provide a link between the hydrological regime and different habitat types to which species respond. Specifically, I investigated whether Geomorphic Types and GRUs are related to the distribution and abundance of different fish species, reflecting unique physical habitat …
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The effects of hydrology and vegetation on microbial community structure and soil function in the sediments of freshwater wetlands
… this goal, plots were established in three hydrologically-distinct regimes (Wet, Intermediate, and Dry) within a non-tidal freshwater wetland along the James River (Charles City County, Virginia). Inside each main plot, ten subplots were cleared of all aboveground plant material; five plots …
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Reservoir compensation releases and the ecology of the River Derwent, Northumberland.
… of a reservoir to be attenuated and the flow regime of the channel to be altered. The impact of channel impoundment on a small, upland UK river, has been assessed and methods for mitigation of ecological impacts explored. The method utilised a unique macroinvertebrate data set for pre- and …
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A Dynamic Risk Management Framework for Water and Environmental Sustainability
… over time and space. These risks involve regime changes and shifts, throughout which one observes the transition of water availability from prolonged dry periods to prolonged wet periods. Ensuring reliability of water supply under these hydrological regime shifts involves understanding how …
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A geohydrological assessment of the behaviour and response of the Zululand coastal plain to both environmental influences and human activity
… replaced is well established. The effects on the hydrological balance of the lake and its environs of the greater water loss resulting from this land use modification has however been the subject of much speculation. This study analyses the hydrological regime of the eastern shores plain over the …
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Bog in a Box: Is Long Term Peat Storage for Future Restoration Viable?
… is reinstated, and prevent the recovery of a hydrological regime and vegetation communities associated with a functional blanket bog . In addition, climatic factors such as wind erosion will present a further barrier to the rehabilitation of the decommissioned site, as supported by results …
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Late quaternary palaeoenvironments of the Sandveld, Western Cape Province, South Africa
… been replaced by fresh water as the dominant hydrological regime. A high resolution palynological investigation of the Grootdrift wetland sediments has contributed to a detailed palaeolimnological reconstruction of the upper Verlorenvlei system since the time of colonial expansion into the …
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