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 7 of 7 for “"Hyporheic zones"”.
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Controls on Mixing and Non-Mixing Dependent Denitrification in River Hyporheic Zones
… processes in aquatic systems. The hyporheic zone has unique biogeochemical conditions, and is known to attenuate contaminants originating from SW and traveling through the hyporheic zone, together with necessary reactants. However, the ability of the hyporheic zone to attenuate …
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Complementary Effects of In-Stream Structures and Inset Floodplains on Solute Retention
… �Solute retention in off channel storage zones such as hyporheic zones and floodplains is typically necessary for significant reaction to occur. �Yet the effects of two common restoration techniques, in stream structures and inset floodplains, on solute retention have not been rigorously …
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The effects of augmentation of coarse particulate organic matter in hyporheic sediments
Metabolic and biogeochemical processes in hyporheic zones may depend on inputs of coarse particulate organic matter. Our research focused on how differing quantity and quality of organic matter affects metabolism and nutrient retention in the hyporheic zone of a low-order Appalachian stream. We …
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Isotopic evidence for the cycling of nitrate and nitrous oxide in aquifers beneath an irrigated agricultural district using established and emerging measurement techniques
… channels, where electron donor-rich suboxic hyporheic zones have manifested. Modifications to current land management practices have been proposed in view of these findings. The secondary aim of this thesis was to assess the utility of using laser spectroscopy in acquiring accurate N2O …
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In the Zone: the Effects of Soil Pipes and Dunes on Hyporheic and Riparian Zone Hydraulics and Biogeochemistry
… pollutants in stream corridors. The focus is hyporheic zones which form the interface between surface water and groundwater below and adjacent to stream channels, and riparian zones which form the interface between channels and adjacent uplands, both of which can attenuate pollutants. In this …
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Fate of metals in presence of minerals and mineral-organic assemblages
… from natural landscapes. Wetland soils and hyporheic zones of stream beds undergo fluctuating redox conditions due to microbial activity, varying water saturation levels, and nutrient dynamics. With fluctuating redox conditions, trace metals can be mobilized or sequestered in response to …
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Quantifying groundwater-surface water interactions to improve the outcomes of human activities
… surface water in streams and groundwater in hyporheic zones and shallow fluvial aquifers, and how human beings influence these interactions and are influenced by them. The three chapters of this dissertation span scales from cm to km and locations from Upstate New York to the Peruvian Andes, …