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dc.contributor.authorArnegard, Matthew E.en_US
dc.date.accessioned2014-03-14T21:51:30Z
dc.date.available2014-03-14T21:51:30Z
dc.date.issued1993-05-05en_US
dc.identifier.otheretd-12162009-020200en_US
dc.identifier.urihttp://hdl.handle.net/10919/46238
dc.description.abstract

Currently, protocols for investigating the effects of chemical pollutants on periphyton communities under natural conditions are statistically flawed and/or potentially harmful to the ecosystems in which the studies are conducted. Toxicant-releasing substrates have been proposed to allow the delivery of different levels of chemical pollutants to replicate microbial communities in situ while minimizing the amount of toxicant released into the aquatic ecosystems under investigation. The purpose of this research was to compare the copper-induced responses of laboratory periphyton communities in artificial streams to those generated using standard, laboratory toxicity testing protocols during a summer and winter experiment. Chemical-releasing substrates were successfully used to deliver copper to periphyton communities in a predictable manner, over a broad range of doses, and at fairly constant rates during one week exposure periods.

en_US
dc.format.mediumBTDen_US
dc.publisherVirginia Techen_US
dc.relation.haspartLD5655.V855_1993.A764.pdfen_US
dc.subjectCopperen_US
dc.subject.lccLD5655.V855 1993.A764en_US
dc.titleToxicant-releasing substrates :a new method for delivering copper to microbial communities in SITUen_US
dc.typeThesisen_US
dc.contributor.departmentBiologyen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineBiologyen_US
dc.contributor.committeechairCairns, John Jr.en_US
dc.contributor.committeememberCherry, Donald S.en_US
dc.contributor.committeememberSmith, Eric P.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12162009-020200/en_US
dc.date.sdate2009-12-16en_US
dc.date.rdate2009-12-16
dc.date.adate2009-12-16en_US


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