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 40 for “"Mississippi River Basin"”.
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A spatial analysis of phosphorus in the Mississippi River Basin
Phosphorus (P) in rivers and streams in the Mississippi River Basin (MRB) is a contributing nutrient to hypoxia in the Gulf of Mexico and impacts local water quality. Although nitrogen has been extensively studied and attributed to be the main nutrient causing the Gulf hypoxic zone, P has …
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Use Patterns and Influencing Factors of Irrigation Best Management Practices in the Lower Mississippi River Basin
… Irrigation Survey from Arkansas, Louisiana, and Mississippi to document the use of irrigation best management practices (IBMPs), analyze use patterns, and use quantitative methods to determine factors that influence producers’ decisions regarding IBMPs. IBMPs included in the survey can be grouped …
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Bighead and silver carp hybridization in the Mississippi River Basin: prevalence, distribution, and post-zygotic selection
… Asia, form multi-generational hybrids within the Mississippi River Basin (MRB). My dissertation explores the complexity and structure of bighead and silver carp hybridization in the MRB through molecular marker development, implementing those markers to test for the extent of hybridization, and to …
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Analysis of water volume change of the lakes and reservoirs in the Mississippi River basin using Landsat imagery and satellite altimetry
… or in situ stations out of 90 research cases in Mississippi River Basin. Then, in case of unavailable in situ data or altimetry measurements, this research proposes an alternative method to estimate the water level through Digital Elevation Model (DEM). Because satellite imagery offers global …
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Quantifying the Size Distribution of Rivers Across Spatial Scales
The surfaces of rivers are hotspots for biogeochemical exchange and emit significant amounts of greenhouse gases globally. Estimates of river surface area are critical to determining fluvial greenhouse gas evasion yet are currently poorly constrained. The relative abundance of narrow rivers to wide …
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Development of an OpenFOAM Solver for Hydroacoustic Simulations: An Application for Acoustic Fish Deterrence
… designed to deter invasive fish species in the Mississippi River Basin. It leverages an established numerical framework (OpenFOAM) and deals with understanding how to model the system. The study prioritizes enhancing the accuracy of the methods developed and ways to improve its computational …
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Physical criteria for wetland targeting on a watershed scale
… runoff from tile-drained fields in the Upper Mississippi River Basin is considered a major cause of hypoxia and the dead zone in the Gulf of Mexico. Wetlands have been shown to be a cost-effective solution for reducing nitrate pollution in the Upper Mississippi River Basin. To improve …
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FACTORS AFFECTING STAKEHOLDER PERCEPTIONS AND INFLUENCE ON MANAGEMENT AGENDAS WITHIN THE TISZA (CENTRAL EUROPE) AND MISSISSIPPI RIVER BASINS (U.S.A.)
… become increasingly important in the field of river basin management. Modern basin management strategies tend to take an adaptive or integrative management approach, which call for broad stakeholder inclusion to account for the increasing uncertainty and competing demands placed on water …
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Assessing the Effect of Wetland Connectivity on In-Stream Nitrate Concentrations Using an Integrated Wetland-River Network
… of nitrate is the agriculture region in the Mississippi River Basin. The location for this study is the Minnesota River Basin which is part of the Mississippi River Basin. Excess fertilizer from corn and soybean production runs off the landscape to the waterways. Nitrate is naturally removed …
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Sedimentary Characteristics and Nutrient Sequestration of Embanked Floodplains Along the Lower Mississippi River, Mississippi and Louisiana
<p>The Mississippi River Basin is the largest river basin in North America and the third largest river basin in the world. Most of the corn, soybeans, wheat, cattle, and hogs harvested in the United States come from the Mississippi River Basin and about 58% of the entire drainage basin is …
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Estimating demand for environmental goods and services, now and later
… benefits of nutrient reductions in the Mississippi River Basin. Improvements in local surface water quality in the Mississippi River Basin (MRB) can contribute to the regional environmental goals of reducing hypoxia in the Gulf of Mexico. To inform estimates of the benefits of water …
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Development and application of quantitative methods for ecosystem services
… ecosystem service evaluation method in the Upper Mississippi River Basin under current conditions and future climate change, (2) improve understanding of influences of aquatic genetic resource provisioning using the SWAT model, (3) improve quantification methods for climate regulation ecosystem …
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Biophysical economic analysis of nutrient and sediment management practices in the Mississippi Alluvial Valley
… the Cabin-Teele sub-watershed, within the lower Mississippi River Basin. The dissertation had two objectives. The first objective was to examine the economic and environmental impact of tillage and nutrient management practices in reducing agricultural pollutants to meet TMDL requirements. …
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Conservation Genetics of Gar (Atractosteus spp.)
… around the Gulf of Mexico and well north in the Mississippi River basin. Currently this species is experiencing population declines across much of its range. However, in some parts of its range, such as Texas, this species has shifted from being viewed as a trash fish to being the target or a …
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Investigating Environmental Change Due To Hypoxic Conditions On The Louisiana Continental Shelf: A Geochemical Approach
… delivered to the Gulf of Mexico via the Mississippi River. Multiple geochemical proxies on a suite of sediment cores from the LA shelf provide a record of environmental change that parallels the onset of hypoxic conditions over the last century and prior to anthropogenic influences. The …
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Three essays on biofuel, weather and corn yield
… Daily soil moisture data in the Upper Mississippi River Basin Area from 1980 to 2012 is simulated from the crop model EPIC, which has very comprehensive interactions between hydrology, weather, soil, crop and plant environment controls. Bayesian Markov Chain Monte Carlo approach is …
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Why Are Some Watersheds More Sediment-Productive Than Others? An Explainable AI Approach
… and water quality protection, yet the drivers of SDR remain poorly constrained at continental scales. Here, we develop a data-driven framework to model SDR and SY across the contiguous United States (CONUS) by integrating high-frequency aquatic sensing, sediment load estimation, and …
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In-situ tests of sound-bubble-strobe light barrier technologies to prevent the range expansions of Asian carp
… carp (collectively, Asian carp) have invaded the Mississippi River Basin and have successfully established populations in the Illinois River. Correlative studies have suggested that Asian carp in the Illinois River have negatively influenced native planktivorous fishes and they now pose an …
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Zooplankton response to Asian carp harvesting in Illinois River backwaters: a natural experiment
… molitrix) have spread throughout the Mississippi River basin and are now approaching Lake Michigan and the Great Lakes. This poses a problem because Asian carp can have major negative impacts on the zooplankton that support much of the ecosystem. Since Asian carp have invaded the …
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Bacterial Assemblages And Microbial Enzyme Activity In The Major Tributaries Of The Lower Mississippi River
… analyses of bacterial assemblages in large rivers. Rivers form important connections between terrestrial land use and marine biogeochemistry and act as conduits for organisms and allochthonous nutrients. Bacteria dominate carbon cycling and nutrient processing in rivers, and therefore can …
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