Browsing by Committee Member
Now showing items 1-18 of 18
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The association between watershed characteristics and mercury concentrations in fish of Northern Ontario lakes
(2014-01-22)Many landscape, limnological, and ecological factors synergistically affect the mercury cycle and subsequently influence total mercury (THg) concentrations in fish. In Chapter 1, the associations between watershed and lake ... -
Changes in physiology and reproductive success in fathead minnows (Pimephales promelas) exposed to pulp and paper mill effluent / by Jacob D. Ouellet.
(2008)As part of their manufacturing process, pulp and paper mills release effluent into waterways that may affect the fecundity, morphology, and physiology of invertebrates and vertebrates in the receiving ecosystem (Kovacs et ... -
Characterization of an arsenite-oxidizing caballeronia sp. soil bacterium and its mutualistic relationship with trifolium pratense for arsenic remediation
(2021)The proposed application of the mutualistic interaction between a native arsenicoxidizing soil bacteria and Trifolium pratense in Northwestern Ontario mine sites is a novel approach to remediation. This thesis studies the ... -
Core areas of habitat use : the influence of spatial scale of analysis on interpreting summer habitat selection by moose (Alces alces)
(2005)I investigated summer habitat selection patterns within the home ranges of 60 GPS-collared adult female moose (Alces alces) in northwestern Ontario. I developed a model that identified the ‘summer’ period for moose and ... -
Detecting trends in walleye (Stizostedion v. vitreum, Mitchill) abundance using catch-effort data
(1995)Three methods of analyzing catch-effort data were investigated regarding their relationship to walleye abundance: mean CUE, Gini coefficient and the relative frequency of zero CUE (RFZ). Walleye recreational fishery ... -
Diatoms as an indicator of pharmaceutical contamination in a freshwater system
(2018)Historically, microalgae have been used as bio-indicators of aquatic health and this can be seen in several studies across the world. Often at the bottom of the food chain, microalgae constitute the primary producer of ... -
Effects of macrophyte cutting on a whole lake ecosystem
(2023)Macrophytes are of significant importance to aquatic ecosystems, generating primary production in nearshore environments and providing physical structure and habitat for organisms in the littoral zone of lakes. Macrophyte ... -
The impact of golf courses on nutrient dynamics from developed areas
(2017)Proper management strategies aimed at reducing the export of excess nitrogen and phosphorus to water bodies are fundamental for resolving nutrient pollution and eutrophication. Golf courses are more intensely managed than ... -
Influence of culverts on small stream fish communities in Northwestern Ontario / by Eric K. Berglund.
(2007)Stream crossings may alter fish habitat and fragment lotic environments, which could alter fish movement in stream reaches and lead to changes in fish community structure and population dynamics at the local and riverscape ... -
Influence of light intensity on activity and habitat utilization of walleye (Sander vitreus) in two Northwestern Ontario lakes
(2006)Ecologists have paid considerable attention to how and why organisms select particular habitats. Of fundamental importance is discerning which physical factors of the environment restrict the occurrence of organisms to ... -
Influence of local and landscape scale factors on the presence, relative abundance and characteristics of brook trout (Salvelinus fontinalis) in beaver ponds
(2006)Study area : Mackenzie River watershed, northeast of Thunder Bay, Northwestern Ontario (drains into Lake Superior) -
Intra-lake and inter-lake variation in copper tolerance in Daphnia from clean and metal-contaminated lakes
(2014-01-22)The freshwater invertebrate Daphnia can persist in historically metal-contaminated lakes due to its ability to adapt to metal contamination. Since different Daphnia isolates have been shown to have varying degrees of ... -
Life on the edge : the role of habitat selection on vole density near forest boundaries
(1997)Theories of density-dependent habitat selection predict pronounced gradients of population density near habitat edges. Population density in high-quality habitats should decline toward edges with lower-quality habitats, ... -
Macrophyte Community Dynamics in Lake Simcoe’s Fringe Wetlands: Potential use as Biological Indicators of Water Quality
(2016)Indices have been developed using macrophytes and water quality parameters to detect the impact of anthropogenic disturbance on coastal wetlands of the Great Lakes, but such an index does not currently exist for Lake ... -
Phytochemical analysis of boreal forest flora of Northwestern Ontario, Canada
(2017)The following research document has been written in the format of a thesis by publication. As such, there is an introductory and concluding chapter to provide addition information and context to the scope of the study, ... -
Testate amoebae (thecamoebian) based reconstruction of Lake Simcoe fringe wetland paleoenvironments
(2014-12-12)Lake Simcoe, Ontario, Canada, a large southern Ontario glacial lake, has been affected by multiple environmental stressors throughout its history. This study uses testate amoebae paleodistribution to reconstruct the ... -
Testing British Columbia's water quality guidelines as a mixture of four important contaminants, hardness, exposure time, and species effects
(2014-12-19)Provincial water quality guidelines are established in order to prevent detrimental effects of a single toxicant from affecting the health of resident aquatic life. However, the elevation of pollutants in freshwater can ... -
Zooplankton community dynamics in the Trent Seven Waterway along Lake Simcoe and Lake Couchiching
(2017)The Trent Severn Waterway (TSW) is a 386km channel that connects Lake Ontario to Georgian Bay. There is a lack of information on the water quality in the nearshore region of the TSW specifically in regards to the planktonic ...
