Surface waters most likely impacted by hormones from land-applied CAFO wastes in Missouri

MOspace/Manakin Repository

Breadcrumbs Navigation

Surface waters most likely impacted by hormones from land-applied CAFO wastes in Missouri

Please use this identifier to cite or link to this item: http://hdl.handle.net/10355/15375

[-] show simple item record

dc.contributor.advisor Urban, Michael A. (Michael Andrew) en_US
dc.contributor.author Scott, Jessica R. G.
dc.date.accessioned 2012-09-18T13:08:47Z
dc.date.available 2012-09-18T13:08:47Z
dc.date.issued 2012
dc.date.submitted 2012 Spring en_US
dc.identifier.other ScottJ-050312-T1747
dc.identifier.uri http://hdl.handle.net/10355/15375
dc.description Title from PDF of title page (University of Missouri--Columbia, viewed on September 18, 2012). en_US
dc.description The 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.description Thesis advisor: Dr. Michael Urban en_US
dc.description Includes bibliographical references. en_US
dc.description M.A. University of Missouri--Columbia 2012. en_US
dc.description Dissertations, Academic -- University of Missouri--Columbia -- Geography. en_US
dc.description "May 2012" en_US
dc.description.abstract The 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.extent v, 104 pages en_US
dc.language.iso en_US en_US
dc.publisher University of Missouri--Columbia en_US
dc.relation.ispartof 2012 Freely available theses (MU) en_US
dc.subject confined animal feeding operations en_US
dc.subject agricultural runoff en_US
dc.subject hormone dispersion en_US
dc.subject agricultural landscape en_US
dc.subject probability mapping en_US
dc.title Surface waters most likely impacted by hormones from land-applied CAFO wastes in Missouri en_US
dc.type Thesis en_US
thesis.degree.discipline Geography en_US
thesis.degree.grantor University of Missouri--Columbia en_US
thesis.degree.name M.A. en_US
thesis.degree.level Masters en_US
dc.relation.ispartofcommunity University of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2012 Theses


This item appears in the following Collection(s)

[-] show simple item record