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Accumulation of dietary and waterborne mercury by fish - experimental and whole-ecosystem approaches using enriched stable isotopes

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dc.contributor.supervisor Blanchfield, Paul (Biological Sciences) en
dc.contributor.author Hrenchuk, Lee
dc.date.accessioned 2010-10-13T14:26:17Z
dc.date.available 2010-10-13T14:26:17Z
dc.date.issued 2010-10-13T14:26:17Z
dc.identifier.uri http://hdl.handle.net/1993/4269
dc.description.abstract To improve our understanding of how environmental mercury (Hg) concentrations influence Hg in fish, I conducted a field experiment to quantify the relative contributions of dietary and aqueous exposure to Hg levels in fish. To further assess the importance of water as a source of Hg to fish, a long-term dataset from the Mercury Experiment to Assess Atmospheric Loading in Canada and the United States was used as input data for two Hg bioaccumulation models: OneFish (accumulation from food and water) and Wisconsin (accumulation from food). Both approaches used enriched stable isotopes of Hg. Yellow perch accumulated 10-21% of their Hg directly from water. Wisconsin model predictions were significantly lower than observed fish Hg concentrations and OneFish predictions. These results suggest that waterborne Hg is an important contributor to Hg in fish and that the exclusion of water in bioaccumulation models may produce underestimates of fish Hg concentrations. en
dc.format.extent 11745226 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.rights info:eu-repo/semantics/openAccess
dc.subject bioaccumulation en
dc.subject METAALICUS en
dc.title Accumulation of dietary and waterborne mercury by fish - experimental and whole-ecosystem approaches using enriched stable isotopes en
dc.type info:eu-repo/semantics/masterThesis
dc.type master thesis en_US
dc.degree.discipline Biological Sciences en
dc.contributor.examiningcommittee Hann, Brenda (Biological Sciences) Paterson, Michael (Entomology) en
dc.degree.level Master of Science (M.Sc.) en
dc.description.note February 2011 en


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