Browsing Biology, Department of by Title
Now showing items 215-234 of 406
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Habitat Associations of Coexisting Carrion Beetles (Subfamilies Nicrophorinae and Silphinae) in Southeastern Ontario
The coexistence of closely related species is thought to play an important role in shaping and maintaining local diversity and community organization. However, competition for shared limiting resources can inhibit coexistence ... -
Have watershed disturbances over the past ~200 years affected diatom composition in Algonquin Provincial Park lakes? A paleolimnological assessment
Algonquin Provincial Park (APP), located in south-central Ontario, spans an area of 7,635 km2 and is a destination for over 800,000 visitors a year. These visitors include cottage owners, as cottages have been leased ... -
High sensitivity of freshwater zooplankton to low chloride concentrations is unaltered by nutrient level
Driven by decades of road salt use, freshwater salinization is prevalent across North America. Increasing chloride concentrations threaten freshwater species, and zooplankton are particularly sensitive. In Canada, the ... -
High-Latitude Responses of Diatom and Chironomid Assemblages to Regional Climate Changes and Other Environmental Stressors
(2015-07-03)High-latitude freshwater ecosystems are amongst the most vulnerable to climate change impacts. However, the response to warming is rarely straightforward and may be modulated by local or regional factors, producing variability ... -
Homo and hetero-dimerization studies of two Zn(II)2Cys6 transcription factors in fission yeast
(2012-07-06)This thesis presents a strategy designed to determine how Thi1 and Thi5 may differentially regulate thiamine production and the vegetative and sexual life cycles in fission yeast. Fission yeast cells regulate the cell ... -
Hypoxia and the metabolic phenotype of Daphnia
Environmental hypoxia is a phenomenon in which low oxygen conditions force organisms to respond behaviourally and physiologically to survive in an otherwise lethal habitat. Animals display different mechanisms to cope with ... -
Hypoxia and the metabolic phenotype of prostate cancer cells
(2008-09-27)Cancer cells have the ability to survive when oxygen is limiting, and upregulate the pathway of fatty acid synthesis, owing in part to alterations in their metabolism. I compared the metabolic phenotypes of the prostate ... -
Ice Association in Microbes
(2012-09-18)Microbes have a remarkable ability to adapt to a host of environmental stressors, including low temperature, high pressure and osmotic stresses. The adaptations of resistant microbes to low temperatures are varied, and ... -
Identification and Characterization of a Novel Antisense Non-Coding RNA from the T-DNA Locus of Rosewood, an Activation-Tagged Poplar Tree
(2015-07-29)Activation-tagging is a functional genomics technique where strong enhancers are inserted randomly into target genomes and can over-activate endogenous genes. When interesting phenotypes occur as a result, it can lead to ... -
Identification and characterization of GmCaMK1: a novel calmodulin-binding receptor-like kinase from nodules of soybean (Glycine max)
(2010-02-03)Ca2+ functions as a second messenger in all eukaryotes. Such Ca2+ signaling is used to coordinate plant responses to numerous stimuli, both developmental and environmental. Ca2+ signals are often transduced via the action ... -
Identification of components in crude oil that are chronically toxic to the early life stages of fish
(2008-01-02)The risk of crude oil exposure to the early life stages (ELS) of fish is difficult to assess, given the complexity of the chemical composition of different oils. The aromatic portion of crude oil contains polycyclic aromatic ... -
Identification of compounds in heavy fuel oil 7102 that are chronically toxic to rainbow trout (Oncorhynchus mykiss) embryos
(2013-01-24)Spilled heavy fuel oil (HFO) sinks within the water column and accumulates in sediments, affecting aquatic organisms that are not typically exposed to oils that float. Previously, the 3-4 ring alkyl substituted polycyclic ... -
Identification of Genes Involved in the C. elegans VAB-1 Eph Receptor Tyrosine Kinase Signaling Pathway
(2011-07-29)The generation of a functional nervous system requires that neuronal cells and axons navigate precisely to their appropriate targets. The Eph Receptor Tyrosine Kinases (RTKs) and their ephrin ligands have emerged as one ... -
Identifying Genes That Regulate Secondary Growth In Poplar
(2008-09-24)Plant growth and development is largely controlled in regions of totipotential cells around the plant body called meristems. The well characterized shoot and root apical meristems are responsible for vertical growth, in ... -
IEE Review Pipeline
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iee-Author Guidelines
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iee-SampleReviewForm
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ieeAuthorGuidelines
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Imaging Biologically-Based Clathrate Hydrate Inhibitors
(2010-04-13)The unscheduled formation of gas hydrate plugs in oil and gas pipelines, which can lead to serious mechanical and personnel damage, is a problematic issue in the petroleum industry. Traditionally, thermodynamic inhibitors ... -
The Impact of Migration on the Evolution and Conservation of an Endemic North American Passerine: Loggerhead Shrike (Lanius ludovicianus)
(2011-01-26)Migration acts as a selective force on the ecology and evolutionary trajectory of species, as well as presenting fundamental challenges for conservation. My thesis examines the impact of migration by exploring patterns ...