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dc.contributor.advisorUrban, Michael A. (Michael Andrew)en_US
dc.contributor.authorScott, Jessica R. G.
dc.date.issued2012
dc.date.submitted2012 Springen_US
dc.descriptionTitle from PDF of title page (University of Missouri--Columbia, viewed on September 18, 2012).en_US
dc.descriptionThe entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.en_US
dc.descriptionThesis advisor: Dr. Michael Urbanen_US
dc.descriptionIncludes bibliographical references.en_US
dc.descriptionM.A. University of Missouri--Columbia 2012.en_US
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Geography.en_US
dc.description"May 2012"en_US
dc.description.abstractThe land application of livestock wastes is a significant potential contributor of environmental hormone contamination. Hormones from land-applied wastes have been detected in field runoff and in downstream surface waters. Contamination risks are especially significant when, “…manure is applied to areas where the majority of stream water derive from drainage water…” (Kjaer et al., 2007). “In areas where manure application is intensive, estrogens have been found in surface waters in concentrations known to affect the endocrine system of fish and amphibians… how the estrogens reach the surface waters is unclear…” (Laegsdmand et al., 2009). Environmental estrogen exposure is linked to reproductive maladies and altered sex characteristics in wildlife and to reproductive disorders and a variety of cancers in humans. Previous study findings indicate that it is very difficult to predict fine scale transformation or degradation rates of hormones across complex agricultural landscapes. This study identifies important fine scale chemical processes and broad scale transport mechanisms and uses a simple model of runoff from CAFO land application fields in Missouri to identify surface waters most likely to be impacted by the hormones those wastes contain. A recent study finds that increased density of animal feeding operations correlate to increased hormonal activity in watershed stream reaches. In Missouri, increased hormonal activity may also be found in areas where CAFO facilities, their animals and wastes are concentrated.en_US
dc.format.extentv, 104 pagesen_US
dc.identifier.otherScottJ-050312-T1747
dc.identifier.urihttp://hdl.handle.net/10355/15375
dc.publisherUniversity of Missouri--Columbiaen_US
dc.relation.ispartof2012 Freely available theses (MU)en_US
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2012 Theses
dc.subjectconfined animal feeding operationsen_US
dc.subjectagricultural runoffen_US
dc.subjecthormone dispersionen_US
dc.subjectagricultural landscapeen_US
dc.subjectprobability mappingen_US
dc.titleSurface waters most likely impacted by hormones from land-applied CAFO wastes in Missourien_US
dc.typeThesisen_US
thesis.degree.disciplineGeographyen_US
thesis.degree.disciplineGeographyeng
thesis.degree.grantorUniversity of Missouri--Columbiaen_US
thesis.degree.levelMastersen_US
thesis.degree.nameM.A.en_US


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