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Now showing items 21-30 of 81
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 ...
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 ...
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 ...
Northern wild rice (Zizania palustris L.) as a phytoremediation species in eutrophic wetlands - investigation of root-sediment interactions
(2014-01-22)
The causes of anthropogenic eutrophication in water bodies are multi-faceted and multigenerational, presenting an ever increasing need for effective and sustainable solutions.Phytoremediation presents a cost-effective ...
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 ...
The effect of polyphenols on the angiotensin II receptor type 1 activation
(2017)
Hypertension, an increase in blood pressure, can lead to many serious complications, one of which is heart failure. Angiotensin (Ang) II is associated with hypertension; specifically, the Ang II receptor type 1 (AGTR1) is ...
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 ...
Functional niche differentiation in co-occurring congeneric plants / by Md Saiful Islam Khan.
(2014)
"Niche differentiation is argued as one of the mechanisms explaining species coexistence. Despite their sessile nature, similar resource needs and traits to acquire and utilize resources closely related plant species ...
Biogenic lead levels in human skeletal remains from the cemetery of the British Royal Navy hospital (1793-1822CE) at English Harbour, Antigua West Indies
(2015)
Though lead has been known to be a cause of human poisoning since ancient times, it
was a widely used metal. The relationship between ancestry or age and lead exposure in the Colonial period of Antigua, West Indies was ...
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 ...