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Assessment of the Physical and Biological Effects of Mine Related Total Suspended Solids in Arctic Lakes

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dc.contributor.advisor Solomon, Keith VanEngen, Ryan 2012-05-09T15:16:57Z 2013-04-20T05:00:10Z 2012 2012-04-20 2012-05-09
dc.description.abstract The objective of this thesis was to assess the physical (concentrations, durations, and sedimentation) and biological effects of total suspended solids (TSS) in Arctic lakes following in-lake construction of dikes. TSS concentration and duration estimates were applied in a Severity of Ill Effects model which predicted possible habitat degradation and a reduction of feeding of salmonids with no significant difference between stations (ANOVA, p=0.153). Benthic invertebrates collected inside suspended sediment containment curtains showed a decrease in richness and abundance (Tukey’s, p<0.05), with no effects elsewhere. Stable isotope analysis from lake trout and arctic char muscle tissue suggested no differences in isotopic signatures following TSS exposure, but stable isotope analysis of stomach contents in lake trout had a significant increase in δ15N compared to the reference basin (Tukey’s, p<0.05). These findings suggested that lake trout adapted their food sources under moderate TSS exposure and benthic invertebrates rapidly recovered to pre-disturbance values. en_US
dc.description.sponsorship Agnico-Eagle Mines Limited: Meadowbank Division and the University of Guelph; Research approved by Department of Fisheries and Oceans & Nunavut Impact Review Board en_US
dc.language.iso en en_US
dc.rights.uri *
dc.subject Total Suspended Solids en_US
dc.subject Sedimentation en_US
dc.subject Arctic Lakes en_US
dc.subject Stable Isotope Analysis en_US
dc.subject Lake Trout en_US
dc.subject Benthic Invertebrates en_US
dc.title Assessment of the Physical and Biological Effects of Mine Related Total Suspended Solids in Arctic Lakes en_US
dc.type Thesis en_US Environmental Biology en_US Master of Science en_US Department of Environmental Biology en_US
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