The toxicological effects of the Mount Polley tailings impoundment breach on freshwater amphipods

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dc.contributor.authorPlomp, Raegan D.
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorPyle, Gregory
dc.date.accessioned2019-10-25T20:20:21Z
dc.date.available2019-10-25T20:20:21Z
dc.date.issued2019
dc.degree.levelMastersen_US
dc.description.abstractThe bioavailability and toxicity of metals to amphipods is influenced by exposure route and co-toxic mechanisms. Metal bioavailability was studied in amphipods at sites affected by the 2014 Mount Polley Mining Corporation tailings impoundment breach. The area around the lake was also subjected to wildfire in 2017. Bioavailability was more correlated with sediment than waterborne metal concentrations with Cu correlating well with distance from the breach. Copper-sediment bioavailability to amphipods in combination with wildfire runoff was studied resulting in non-additive toxicity. Hyalella azteca exposed to Cu-enriched sediment with fire extract (FE) experienced a more-than-additive effect on survival and amphipod whole-body Cu concentration but no significant reduction in growth or acetylcholinesterase activity compared to the Cu-contaminated sediment or FE alone, respectively. The present study highlighted the importance of using biological vectors to assess toxicity, sediment-focused toxicity study following contamination events, and revealed the co-toxic effect of FE and Cu-enriched sediment.en_US
dc.description.sponsorshipCAIP RCP-12-004CCAIP NSERC Discovery RGPIN-2015-04492 Environmental Damages Fund RC16-3254 16838/4125/1618en_US
dc.identifier.urihttps://hdl.handle.net/10133/5563
dc.language.isoen_USen_US
dc.proquest.subject0383en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : Universtiy of Lethbridge, Department of Biological Sciencesen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectbioaccumulationen_US
dc.subjectfreshwater invertebratesen_US
dc.subjectmetalsen_US
dc.subjectsurvivalen_US
dc.subjectwildfireen_US
dc.subjectDissertations, Academicen_US
dc.titleThe toxicological effects of the Mount Polley tailings impoundment breach on freshwater amphipodsen_US
dc.typeThesisen_US
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