Contaminants in water, sediment, and biota from the Bill Williams River National Wildlife Refuge, Arizona

Persistent Link:
http://hdl.handle.net/10150/278462
Title:
Contaminants in water, sediment, and biota from the Bill Williams River National Wildlife Refuge, Arizona
Author:
Ruiz, Leslie Diane, 1969-
Issue Date:
1994
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
One hundred sixty two composite samples were analyzed for organochlorine compound residues and 19 trace elements and heavy metals. There was no evidence that flushing of washes in times of flood increases contaminant levels in the Bill Williams River, or that historical mining operations currently contributed to the element load. There was evidence that Colorado River water increased selenium levels in biota in the delta; one hundred percent of fish collected from the confluence of the Bill Williams River and the Colorado River contained elevated selenium concentration (geometric mean = 9.98, range 2.80-17.56 μg/g dry weight). These levels exceed standards set for the protection of predatory species of fish and wildlife.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Health Sciences, Toxicology.; Agriculture, Forestry and Wildlife.; Environmental Sciences.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Renewable natural resources
Degree Grantor:
University of Arizona
Advisor:
Maughan, O. Eugene

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleContaminants in water, sediment, and biota from the Bill Williams River National Wildlife Refuge, Arizonaen_US
dc.creatorRuiz, Leslie Diane, 1969-en_US
dc.contributor.authorRuiz, Leslie Diane, 1969-en_US
dc.date.issued1994en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractOne hundred sixty two composite samples were analyzed for organochlorine compound residues and 19 trace elements and heavy metals. There was no evidence that flushing of washes in times of flood increases contaminant levels in the Bill Williams River, or that historical mining operations currently contributed to the element load. There was evidence that Colorado River water increased selenium levels in biota in the delta; one hundred percent of fish collected from the confluence of the Bill Williams River and the Colorado River contained elevated selenium concentration (geometric mean = 9.98, range 2.80-17.56 μg/g dry weight). These levels exceed standards set for the protection of predatory species of fish and wildlife.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectHealth Sciences, Toxicology.en_US
dc.subjectAgriculture, Forestry and Wildlife.en_US
dc.subjectEnvironmental Sciences.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineRenewable natural resourcesen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorMaughan, O. Eugeneen_US
dc.identifier.proquest1361565en_US
dc.identifier.bibrecord.b33040862en_US
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