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Spatial Variability Of Nonpoint Source Yields In Ozark Highlands Watersheds Under Historical And Recent Land Use Conditions, Tyler J. Pursley
Spatial Variability Of Nonpoint Source Yields In Ozark Highlands Watersheds Under Historical And Recent Land Use Conditions, Tyler J. Pursley
MSU Graduate Theses
Many of the environmental problems facing communities today stem from historical as well as present land use disturbances related to agriculture, urbanization, and resource extraction. It is important to evaluate a range of land use and soil effects on nonpoint source (NPS) pollution to fully understand land use-water quality relationships. The Ozark Highlands region has undergone significant phases of land use change throughout its settlement history and is actively developing today (2020). This study used nonpoint nitrogen (TN), phosphorus (TP), and sediment (TSS) yields predicted by the US EPA’s Spreadsheet Tool for Estimating Pollutant Loads (STEPL) model to evaluate human …
Spatial Distribution And Geomorphic Factors Of Lead Contamination On Floodplains Affected By Historical Mining, Big Rover, S.E. Missouri, David Bower Huggins
Spatial Distribution And Geomorphic Factors Of Lead Contamination On Floodplains Affected By Historical Mining, Big Rover, S.E. Missouri, David Bower Huggins
MSU Graduate Theses
Historical mining in the Old Lead Belt resulted in lead (Pb) contamination of floodplain soils for over 170 km along the Big River in southeastern Missouri. The overall pattern of contamination are understood. However, Pb distribution across floodplain surfaces has not been investigated at the scale needed for site-level remediation planning. The goal of this project is to examine spatial distribution of Pb with more detail and identify the role of geomorphic processes. Predictive models are needed to evaluate factors affecting Pb distribution such as elevation, distance from the channel, and geochemistry. This study evaluates Pb distribution at three ~1km …