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dc.contributor.authorPowell, Cleveland Hen_US
dc.date.accessioned2014-07-23T14:50:39Z
dc.date.available2014-07-23T14:50:39Z
dc.date.created2014en_US
dc.date.issued2014en_US
dc.identifierTCU Master Thesisen_US
dc.identifieretd-05132014-112556en_US
dc.identifierumi-10478en_US
dc.identifiercat-002150875en_US
dc.identifier.urihttps://repository.tcu.edu/handle/116099117/4545
dc.descriptionTitle from thesis title page (viewed Jun. 11, 2014).en_US
dc.descriptionIncludes abstract.en_US
dc.descriptionThesis--Texas Christian University, 2014.en_US
dc.descriptionDepartment of Geology, Energy and the Environment; advisor, Ray Drenner.en_US
dc.descriptionIncludes bibliographical references.en_US
dc.descriptionText (electronic thesis) in PDF.en_US
dc.description.abstract"Mercury (Hg) is a global atmospheric pollutant that can be harmful to wildlife. Because methylmercury (MeHg) is only produced in aquatic ecosystems, it is assumed that Hg contamination poses a risk to aquatic but not terrestrial wildlife. Tetragnathid spiders transfer aquatic MeHg to terrestrial consumers and may contain high concentrations of MeHg that pose a threat to the health of songbirds that consume them. I collected tetragnathid spiders from 26 sites along three East Texas rivers, Black Cypress, Big Cypress, and Little Cypress Bayou, and determined their Hg concentrations. I then calculated potential Hg risk to four species of songbirds (American Robin, Eastern Bluebird, Carolina Wren, and Chickadee). Average site-specific MeHg concentrations in spiders ranged from 34.5 to 174 ng/g wet weight and were high enough to pose a risk to some songbirds. Mercury concentrations in spiders were significantly different between the rivers and lowest in Big Cypress Bayou"--Abstract.en_US
dc.format.mediumFormat: Onlineen_US
dc.publisher[Fort Worth, Tex.] : Texas Christian University,en_US
dc.relation.ispartofUMI thesis.en_US
dc.relation.requiresMode of access: World Wide Web.en_US
dc.relation.requiresSystem requirements: Adobe Acrobat reader.en_US
dc.rightsRestricted access.
dc.titleMercury concentrations in riparian spiders along three East Texas rivers and the health risk they pose to songbirds [electronic resource] /en_US
dc.typeTexten_US
etd.degree.departmentDepartment of Geology, Energy and the Environment
etd.degree.levelMaster
local.academicunitSchool of Geology, Energy and the Environment
local.subjectareaEnvironmental Sciences


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