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dc.contributor.authorWatkins, Lisa
dc.date.accessioned2018-10-23T13:33:35Z
dc.date.available2020-08-22T06:00:46Z
dc.date.issued2018-08-30
dc.identifier.otherWatkins_cornell_0058O_10343
dc.identifier.otherhttp://dissertations.umi.com/cornell:10343
dc.identifier.otherbibid: 10489663
dc.identifier.urihttps://hdl.handle.net/1813/59567
dc.description.abstractMicroplastic pollution is increasingly studied in freshwater systems due to concerns over the ubiquity of the small plastic particles and their potential effects on aquatic organisms. Still unknown is how in-stream characteristics and temporal variabilities may affect observed riverine microplastic concentrations. In this thesis I investigate dams’ influence on the spatial heterogeneity of microplastics, the affect that time of sampling (time of day and seasonal flow condition) has on the microplastic concentration measured, and whether upstream wastewater management strategies affect the patterns observed. I find that that dams act as a sink for microplastics, capturing significantly higher concentrations of microplastics in the reservoir behind them than is found in areas of settling upstream or downstream of them. My analysis also demonstrates that flow condition is a significant predictor of microplastic concentration at a given location while other measured parameters, including upstream wastewater management strategies, are not. By indicating that flow condition is an important control on measured concentration, this research improves future studies’ ability to interpret and properly apply the findings of existing riverine microplastic surveys. Additionally, by improving our understanding of how hydrologic conditions and the presence of in-stream barriers affect the transport of microplastics in rivers, this research helps to reduce uncertainty in models that attempt to quantify the magnitude of global microplastic pollution and the rate at which it grows.
dc.language.isoen_US
dc.subjectHydrologic sciences
dc.subjectEnvironmental engineering
dc.subjectdam
dc.subjectmicroplastics
dc.subjectplastic
dc.subjectpollution
dc.subjectriver
dc.subjectwastewater
dc.subjectEnvironmental science
dc.titleTemporal and Hydrologic Factors Influencing Riverine Microplastic Concentrations
dc.typedissertation or thesis
thesis.degree.disciplineBiological and Environmental Engineering
thesis.degree.grantorCornell University
thesis.degree.levelMaster of Science
thesis.degree.nameM.S., Biological and Environmental Engineering
dc.contributor.chairWalter, Michael Todd
dc.contributor.committeeMemberSullivan, Patrick J.
dcterms.licensehttps://hdl.handle.net/1813/59810
dc.identifier.doihttps://doi.org/10.7298/X4PC30NX


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