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dc.contributor.authorNovy, James R.
dc.contributor.authorPecor, Charles H.
dc.contributor.authorCline, Jeffery T.
dc.date.accessioned2014-05-29T18:14:19Z
dc.date.available2014-05-29T18:14:19Z
dc.date.issued2014-05-29
dc.identifier.urihttp://hdl.handle.net/11045/24146
dc.descriptionPartial OCR done. 40 pages total.en_US
dc.description.abstractCopper sulfate (CuSO4) has been applied annually since 1944 to as much as 3% of the surface area of Houghton L§ke to control the snail vectors of "swimmers' itch" (schistosome dermatitis). To investigate the effects and fate of the approximately one million pounds of copper which have been applied to Houghton Lake, water, sediments, aquatic macroinvertebrates and fish were analyzed for copper. Dissolved copper in lake water was below detectable limits (<0.01 mg/1), while total coppper associated with particulate matter in lake water ranged from 0.02 to 0.75 mg/1. Copper content of lake sediments ranged from 1.4 to 254.9 nig/kg dry weight. Higher concentrations were generally found associated with sediment which had large organic fractions. The highest concentration found in sediments from areas which were treated annually with copper sulfate was 35.3 mg/kg copper (dry weight). Copper content of macroinvertebrates (Ephemera simulans, El 1iptio dilatatus and Orconectes s p .) ranged from 3.0 to 48.0 mg/kg wet weight. Ephemera simulans was the only macroinvertebrate which showed a significant relationship between its body copper content and the copper content of associated sediments. Average copper concentrations of bottom feeding fish, panfish and predatory fish were 1.7, 0.6, and 0.4 mg/kg wet weight, respectively. Copper concentrations in warmwater fishes from Michigan background water quality stations ranged from 0.2 to 0.7 mg/kg. Copper was not found to be accumulating in the sandy sediments of treatment areas, but was being transported by suspended organic particulates to the organic sediments in deeper areas of the lake. Wave action appears to be the major cause of copper mobilization within Houghton Lake. Laboratory tests showed that the organic sediments of Houghton Lake had the capability of adsorbing up to 8,700 mg/kg copper (dry weight) before an amount toxic to aquatic life appeared in overlying wateren_US
dc.language.isoen_USen_US
dc.subjectSwimmer's Itchen_US
dc.subjectEffect on Water Quality Controlen_US
dc.subjectInland Lake Water Quality Management Project Reporten_US
dc.subjectDepartment of Natural Resourcesen_US
dc.subjectTechnical Bulletin No. 73-4en_US
dc.subjectMichigan Water Resources Commissionen_US
dc.subjectBureau of Water Management Water Quality Appraisalen_US
dc.subjectUpper Great Lakes Regional Commissionen_US
dc.subject1973en_US
dc.subjectHoughton Lake, Michigan 1971-1973en_US
dc.subjectSwimmer's Itch Control - Effect on water qualityen_US
dc.titleSwimmers Itch Control - Effect on Water Qualityen_US
dc.typeTechnical Reporten_US


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