Browsing by Committee Member
Now showing items 1-18 of 18
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Chemoreception in invasive rusty crayfish (Orconectes rusticus): learning and adaptation in aquatic ecosystems of Northwestern Ontario
(2012-11-10)Crayfish utilize chemosensory cues, in addition to other sensory inputs, to mediate a variety of fundamental life processes. Exotic species, like the rusty crayfish (Orconectes rusticus), are known to employ a broader ... -
Critical decisions: risk allocation in a model arthropod (Folsomia candida)
(2015-06-15)Risk allocation theory predicts that foraging animals moderate predation risk by allocating their foraging effort and space use according to their energetic demands. Undernourished animals have a greater need for energy ... -
Density-dependent habitat selection alters fitness in a clonal hexapod
(2019)Density-dependent habitat selection shapes the distribution and abundance of organisms and thus informs our understanding of the eco-evolutionary process. When habitat choice is contingent on an individual’s expectation ... -
The effect of cottage development on aquatic macroinvertebrate communities and water quality in central Ontario lakes
(2023)In Canada, over 3 million freshwater lakes provide a wide range of ecological, financial, aesthetic, and public health services for their citizens, communities, and tourists. This is especially true for regions like ... -
Exploring breeding season phenology of the Eastern Gray Treefrog (Dryophytes versicolor)
(2024)Altered phenological cycles due to climate changes may affect species’ geographical distributions as the new timing of important life-history events may allow species to expand or shift their range. Insight into these ... -
Factors influencing thermal variability and fish distribution in small boreal steams / by Lisa McKee.
(2010)The spatial variability of stream temperature is an important component of habitat within streams providing optimal temperatures for foraging and thermal refugia for sensitive species such as brook trout. Riparian shading ... -
How does environmental variation effect fitness of density-dependent habitat selectors? / by Jody T. MacEachern.
(2010)The spatial distribution of animals can arise through a variety of habitat-selection strategies. It is unclear which habitat characteristics lead to the evolution of one of these strategies over another. Thus I use an ... -
The Impacts of forest management practices on mercury contamination in small stream biota
(2012-11-10)Mercury is a contaminant of global concern as it is present in all biota and ecosystems around the world. Small streams are influenced by the terrestrial systems that feed them. I examined the presence of mercury in small ... -
Landscape genetic analysis of population structure and barriers to gene flow in boreal woodland caribou (Rangifer tarandus caribou)
(2023)This study examines patterns of population genetic structure and gene flow of boreal woodland caribou (Rangifer tarandus caribou), which are experiencing declining population sizes across North America. Compared to ... -
The parasite communities of two populations of walleye (Sander vitreus) from Black Bay and Circle Lake, Ontario, Canada
(2017)The parasite communities of fishes can provide important information on certain aspects of host biology such as where they have been, what they are eating, and what’s eating them. Unfortunately, fish parasite studies in ... -
Population genetics and phylogeography of aplodinotus grunniens (freshwater drum)
(2013-02-03)The purpose of this study is to determine the population genetic and phylogeographic structure of Aplodinotus grunniens (freshwater drum) populations through analysis of the NADH dehydrogenase subunit 2 (ND2) region and ... -
Predator mediated indirect effects of livestock on native prey
(2012-11-10)Livestock are common in many protected areas and due to their negative effects pose a considerable challenge to protected area managers attempting to conserve native ecosystems. Negative effects include resource competition ... -
Predicting mixing trends in mine-receiving waters using water quality modeling
(2016)Complete mixing of the water column of lakes is important to ensure that nutrients and dissolved oxygen are replenished and equalized throughout the lake. This ensures that organisms within the lake at all trophic levels ... -
Safety from predators or competitors? Interference competition leads to apparent predation risk
(2013-02-01)Prey often react to predation risk by foraging preferentially in safe, rather than risky, patches. Yet prey also must deal with the negative effects of competition for the same patches. The pattern of patch use can mimic ... -
Salmonid thermal habitats in Lake Superior tributaries
(2020)For some potamodromous salmonid species, such as the Brook Trout, streams are a critical spawning habitat but also habitat for juveniles and stream residents to grow. Salmonids are coldwater fishes and cooler stream water ... -
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 ... -
Tracking habitat use by boreal toads in disturbed forest on the boreal plain in Alberta
(2014-12-05)Radio-telemetry is an effective way of collecting detailed information on the behaviour of a great many species. However, the presence of the radio-transmitter may influence the behaviour of the subject, an effect for which ... -
Understory species response to partial harvesting in boreal riparian buffers
(2009)In order to preserve valuable riparian functioning, forest harvesting in Canada attempts to protect riparian areas through the application of a no-harvest buffer zone around water bodies, and more recently through the ...