Browsing by Discipline
Now showing items 81-100 of 298
-
Ecology of forage fish following cessation of overharvest of walleye in Henderson Lake, Ontario
(1988)I examined the forage base of Henderson Lake, Ontario following collapse of its walleye stock due to overexploitation, and an inexplicable decline of the ninespine stickleback population. In response to these events a ... -
Ecology of northern pike, Esox lucius Linnaeus, in Savanne Lake, Ontario
(1980)Important aspects of the life history and population dynamics of the northern pike, Esox lucius, in Savanne Lake, Ontario were studied during 1977 and 1978. Feeding relationships involving northern pike and walleyes, ... -
Ecology of pathogenic Escherichia coli in water : survival and molecular detection
(2003)Recently there has been a surge of interest in the ability of enterohemmorhagic Escherichia coli (EHEC) to survive in aquatic environments. It has been speculated a correlation may exist between the genotype of an E. ... -
Edge effects at clearcut, fire and riparian buffers in the boreal forest of Northwestern Ontario
(2004)In the boreal forest of northwestern Ontario clearcutting and fire are two common edge-creating disturbances. Fundamental knowledge regarding the ability of fire and clearcut edges to minimize edge effects, preserve ... -
Effect of biofilm and the role of rpoS on the survival of a p-Nitrophenol-degrading Pseudomonas putida / by Miranda Maki.
(2008)Pseudomonas putida is a Gram negative bacterium that can be found naturally in the environment as planktonic free-living cells, or in concert with other bacterial species in biofilms. In this study, the P. putida strain ... -
Effect of body condition on reproductive performance and secondary sex ratios in ring-billed gulls (Larus delawarensis)
(1986)Nesting Ring-billed Gulls (Larus delawarensis) were studied on Granite Island, northern Lake Superior, during the breeding seasons of 1983 and 1984 to determine if there was a relationship between food supply and the ... -
Effect of carbon-starvation on the survival of and PNP degradation by a Moraxella strain
(2004)The effect of carbon-starvation on the stress resistance responses of a p-nitrophenol degrading Moraxella strain was examined in both, buffer and river water samples. The Moraxella strain showed optimal stress resistance ... -
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 ... -
The effect of metformin on absolute telomere length
(2018)In this study, the relationship between average absolute telomere length and metformin use was examined. Human blood samples were obtained from 106 participants ranging from 42-100 years old. Samples were split into four ... -
The effect of Omega-3 polyunsaturated fatty acid supplementation on lipid composition, oxidative stress, and aldehyde concentrations in rat liver and brain
(2014-01-22)Oxidative stress is caused by an imbalance between the production and removal of reactive oxygen species (ROS). Polyunsaturated fatty acids (PUFA), due to their multiple carbon-carbon double bonds, react readily with ROS ... -
Effect of periphytic Escherichia coli and lake water bacterial population on the biofilm establishment of a Shiga toxin producing Escherichia coli O157:H7 strain
(2015)Biofilm studies Escherichia coli (E. coli) have typically focused on 0157:H7 in defined, laboratory medium. While there is value in such studies, they offer little in the way of explaining the behaviour and interactions ... -
Effect of physical fitness exercise on the distribution of plasma high density lipoprotein cholesterol and other lipid fractions
(1982)The effect of participation in a physical fitness programme of moderate intensity on plasma lipoprotein cholesterols, total cholesterol, triglycerides and apolipoprotein-A levels was investigated. Forty-nine inactive ... -
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 ... -
Effect of rpoS inactivation on biofilm formation of a p-nitrophenol degrading Pseudomonas putida strain
(2005)With the widespread existence of environmental pollutants in the modern world, effective, non-destructive means of remediation are becoming more and more desirable as an alternative to the traditional excavation and ... -
The effect of secoisolariciresinol diglucoside on oxidative stress and inflammation in cardiac iron overload
(2013-02-01)Chronic cardiac iron overload directly correlates with cardiac dysfunction and may ultimately cause heart failure. Although recent studies have suggested that altered calcium homeostasis and increased reactive oxygen ... -
Effectiveness of self-restoration for two small mine impacted shield lakes
(2003)Cleaver Lake and Horneblende Lake in the Whitesand Watershed were studied for the impact of mining and milling activities. No release of zinc, copper, iron, or manganese was detected in aerated sediment samples and there ... -
Effects of alternative conifer release treatments on terrestrial gastropods of regenerating spruce plantation
(1997)This study examined changes in terrestrial gastropod densities and species richness associated with alternative methods of managing competing vegetation on regenerating spruce plantations. Data were collected monthly ... -
Effects of an episodic removal scheme on a walleye, stizostedion vitreum vitreum, population
(1985)A pulse fishing scheme, applied over a three year period (1980 to 1982), deliberately removed 3226 walleye from Henderson Lake, Ontario, causing the stock to collapse. The objective of the removal was not only to seek ...