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 101 for “"Saltwater"”.
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Hydrodynamics of Saltwater Intrusion in Heterogeneous Coastal Aquifers
Saltwater intrusion (SWI) poses a significant threat to the livelihood of populations in coastal zones who are dependent on freshwater extracted from aquifers near to the sea. The sustainable management of coastal aquifers is crucial to prevent the degradation of freshwater resources by the …
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Spray Aerosols From Saltwater to Freshwater Breaking Waves
… in spray aerosol ejection between freshwater and saltwater and their impact on the water-to-air dispersal of microorganisms and pollutants are poorly understood. The goals of this dissertation work were to understand mechanistic differences between spray aerosol generation in freshwater and …
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Bayesian Saltwater Intrusion Prediction and Remediation Design under Uncertainty
… in a hierarchical structure and conduct BMA for saltwater intrusion prediction. A BMA tree of models is developed to understand the impact of individual sources of uncertainty and uncertainty propagation on model predictions. The uncertainty analysis using HBMA leads to finding the best modeling …
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Influence of beach hydrodynamics on saltwater transport and oil persistence in beaches
… role in both aquifer and the open water. Saltwater intrusion could prevent utilization of groundwater for either drinking water or irrigation. In addition, the flux of solutes, such as nutrients, from inland groundwater sources plays an important role in shoreline ecology, especially in …
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Oligohaline wetland response and recovery following storm-driven saltwater intrusion in coastal Louisiana
… Here I examined the impacts of storm-induced saltwater intrusion and post-intrusion conditions on the structure and growth of an oligohaline wetland plant community, and on wetland soil biogeochemistry and conditions during and after saltwater intrusion. In the greenhouse, a six-week saltwater …
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I Dreamt of Saltwater and Eggs: Magic, Nationhood, and the Writer-out-of-Country
… includes a novel entitled I Dreamt of Saltwater and Eggs and an accom- panying critical commentary which aims at examining themes and issues of post-colonial and commonwealth fiction in relation to the context of Cyprus. The novel is a magical realist story about a boy who sets out to …
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Value and place in Aboriginal seafood enterprise development in Australia's Northern Territory: experiences and perspectives from the Maningrida region.
… and business models of enterprises. The Saltwater Aboriginal peoples of Australia's Northern Territory (NT), who hold rich and ancient spiritual, cultural, social, and economic connections with their coastal lands and seas, have engaged in seafood enterprise activities since before the …
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Value and place in Aboriginal seafood enterprise development in Australia's Northern Territory: experiences and perspectives from the Maningrida region.
… and business models of enterprises. The Saltwater Aboriginal peoples of Australia's Northern Territory (NT), who hold rich and ancient spiritual, cultural, social, and economic connections with their coastal lands and seas, have engaged in seafood enterprise activities since before the …
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Corticosteroid receptor dynamics and smolting in hatchery-reared and wild coho salmon (Oncorhynchus kisutch)
… gill Na+K+ATPase activity and the development of saltwater tolerance. At times of the year when fish showed increased saltwater tolerance, the gill CR concentration and affinity decreased. The decline in receptor numbers and affinity was concurrent with increases in plasma cortisol concentration. …
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The combined effects of salinity and sulfide on the growth and physiology of the freshwater marsh plant Pancium hemitomon J.A. Schultes
Vegetative response to saltwater intrusion into coastal freshwater wetlands is governed by the combined effects of increased salinity and porewater sulfide concentrations. I conducted a series of experiments to address the primary hypothesis that growth of Panicum hemitomon is adversely affected by …
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The Toxicity of Ammonia to Atlantic Silverside (Menidia menidia) and Ghost Shrimp (Palaemonetes pugio)
… using toxicity data from both freshwater and saltwater species, rather than solely from saltwater species. More ammonia toxicity tests need to be conducted to expand the database with saltwater species in order to develop a reliable and appropriate limits for ammonia discharge. Two saltwater …
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Understanding the Mechanisms that Determine Feed Conversion Ratio in Chinook Salmon – Physiological and Behavioural Aspects
… inefficient Chinook salmon, in freshwater and saltwater, were identified using ballotini beads and X-radiography to determine individual feed intake. Comparisons of physiological traits and metabolism between the two FCR phenotypes found that freshwater and saltwater feed efficient fish …
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Microfluidic Electrical Impedance Spectroscopy
… over time. Impedance values of water and 1% wt. saltwater were compared to show that the device is able to detect changes in impedance, with up to a 60% reduction in electrical impedance in saltwater. Cells were introduced into the device, where changes in impedance were seen across multiple …
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The stress of moving out : physiological and behavioural effects of commercial transport on Atlantic salmon (Salmo salar) smolts
… during transport from freshwater farms to the saltwater net pens using physiology and behaviour to assess transport stress. Smolts were transported first by truck from the freshwater farm to the dock, and then in the flow-through cargo holds of a live-haul vessel to the saltwater net pens. Fish …
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Adaptation in a Changing World: Evolutionary mechanisms of salt tolerance in a coastal amphibian
… salt-naïve, inland populations in response to saltwater exposure across life stages, (2.) determine the molecular and life history mechanisms that permit this species to persist in brackish habitats, and (3.) explore factors that influence likelihoods of evolution (e.g., density dependence, …
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The Toxicity of Ammonia to the Summer Flounder (Paralychtus Dentatus), Atlantic Silverside (Menidia Menidia), and Quahog Clam (Mercenaria Mercenaria)
… of data exists on the toxicity of ammonia to saltwater organisms. Prior to this research, the chronic criterion was based on two saltwater and four freshwater organisms. This research was conducted to add additional data so more appropriate criteria may be set. Two saltwater fish, the Summer …
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Measurement of Soil and Water-Quality Parameters to Understand Subsurface Transport Processes
… such as excess rainfall and/or draught cycles on saltwater intrusion processes with a focus on managing freshwater resources in island aquifers. As part of this effort, we used a combination of laboratory experiments and numerical simulations to study the impacts of changes in rainfall patterns on …
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Adapting to salinity: The effects of salinity on population structure and offspring survival in Lucania parva
… preliminary work indicated that freshwater-saltwater population pairs also possessed elevated levels of differentiation in loci related to osmoregulation. In chapter 2, I used RAD-Seq data from 10 populations across Florida to examine the levels of population structure between freshwater and …
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Analysis and occurrence of disinfection by-products in fresh and salt water
… the occurrence and formation of these DBPs in saltwater and seawater based marine park aquaria. A new rapid and sensitive method was developed for simultaneous analysis of ten brominated and/or iodinated acetic acids, bromate, iodate, bromide, and iodide using ion chromatography-inductively …
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