Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 48 for “"Lake Ontario"”.
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Ecology of Lake Ontario Brown Trout
… preferences of brown trout (Salmo trutta) in Lake Ontario. During fall 1980 and spring and fall 1981, the activities of 36 radiotagged brown trout were monitored near the southern shore of Lake Ontario between Port Bay and Point Breeze (Fig. 1). Underwater radio telemetry techniques were …
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Duality of magmatism at Kirkland Lake, Ontario, Canada.
… is located along the major east-trending Larder Lake fault (LLF), which extends approximately 250km from Val d'Or to Kirkland Lake. The western portion of the LLF consists of a 60 km long narrow (less than 5 km wide) and sinuous deformation zone commonly referred to as the Kirkland Lake-Larder …
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Exchange of Mirex between Lake Ontario and its Tributaries
The 1974 discovery of mirex in Lake Ontario fish by Kaiser (1974) triggered a period of intensive study on the substance within the lake ecosystem. Two Lake Ontario tributaries were identified as sources of mirex. The Niagara River is the major source of mirex (366 kg) to Lake Ontario, while the …
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Mercury Transport and Fluxes in the Lake Ontario Basin
… dissertation I assess mercury dynamics in the Lake Ontario Basin. In four interrelated phases, ecosystem mercury concentrations and fluxes were analyzed at increasing scales. Each phase is presented in order of increasing scale, starting with a reach-by-reach analysis in the Seneca River in New …
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Analysis of Cisco (Coregonus artedi) Populations in Eastern Lake Ontario
… that has undergone significant declines within Lake Ontario as a result of over-exploitation and other anthropogenic impacts. The goal of this project was to expand upon the current scientific knowledge base for Cisco within Eastern Lake Ontario [ELO] by providing an up-to-date assessment of the …
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Predatory Impact of Exotic Cladoceran Cercopagis pengoi on the Zooplankton of Lake Ontario
… impact of Cercopagis on the lower food-web of Lake Ontario by analyzing the historical and seasonal abundance of the crustacean zooplankton, by conducting laboratory feeding experiments, and by estimating consumption demand of Cercopagis based on bioenergetic considerations. A comparison of …
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Geology and origin of the Golden Patricia deposit, Pickle Lake, Ontario, Canada, The
Includes bibliographical references.
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Characterizing Plankton communities in Lake Ontario coastal wetlands along an urban land-use gradient
… across an urban land-use gradient in the Lake Ontario coastal wetlands: Frenchman’s Bay, Lynde Marsh, McLaughlin Bay, and Bowmanville Marsh over two years (2018-2019). One of the study wetlands (McLaughlin Bay) was assessed over three years (2017-2019) for its suitability as a candidate …
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Characterizing water quality, nutrients, and dissolved oxygen dynamics in four Lake Ontario coastal wetlands
Great Lakes coastal wetlands are “keystone” ecosystems, yet their role in regulating nutrient loadings to receiving waters remains unclear. Over a decade of monitoring by the Toronto and Region Conservation Authority revealed that four wetlands (Rouge Marsh, Duffin’s Marsh, Carruthers Marsh, and …
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Acoustic Telemetry Provides New Insights into the Ecology of Smallmouth Bass in Eastern Lake Ontario
… a top predator native to the Laurentian Great Lakes, with a wide distribution in North America. Our understanding of Smallmouth Bass ecology is extensive, although primarily based on research from smaller inland lakes, rivers, and reservoirs. In Lake Ontario, there is an urgent need for …
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Water Chestnut: Field Observations, Competition, and Seed Germination and Viability in Lake Ontario Coastal Wetlands
… number of sites in New York State, particularly Lake Ontario coastal wetlands. It can severely inhibit ecosystem functioning and can be costly to control. To understand this exotic invasive plant more thoroughly, field observations and experiments were performed. The field observations were made …
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Foraging ecology and parental care of common terns (Sterna hirundo) nesting in Windermere Basin, Lake Ontario
… male common terns nesting at Hamilton Harbour, Lake Ontario during 1991 and 1992. Telemetry data were collected concurrently with behavioural observations from an elevated blind. Terns fitted with transmitters did not differ from controls with respect to either brood attendance, patterns of …
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Abundance and composition of microplastics in surface waters and sediments of five south-central Lake Ontario tributaries
… 10,000 metric tons of plastic enter the Great Lakes every year. Most of this is microplastic, tiny plastic particles less than five millimeters in length or diameter. Microplastic pollution is a growing environmental concern in the Great Lakes where these particles can affect aquatic life as …
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Diet and trophic relationships of fishes from the nearshore of the Bay of Quinte and Kingston Basin, Lake Ontario
… diet and trophic position of fishes within large lakes. Two areas of north-eastern Lake Ontario - the Bay of Quinte and the Kingston Basin – provide contrasts in temperature, nutrients and depth while supporting similar littoral fish communities and therefore provide an excellent system to address …
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Identifying metabolic indicators of phytoplankton and comparing the temporal changes in algal community composition in two Lake Ontario areas of concern
… in Hamilton Harbour and the Bay of Quinte, two Lake Ontario areas of concern (AOCs). Phytoplankton genus composition was obtained via microscopy and water quality was assessed. Metabolomics were performed using liquid chromatography tandem mass spectroscopy (LC-MS/MS) to identify changes in …
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The hydrological and limnological characterization of two Canadian water catchments sensitive to anthropogenic influences: Crawford Lake, Ontario and Old Crow Flats, Yukon
Crawford Lake, Ontario, and Old Crow Flats, Yukon, provide two unique locations to study interacting hydrological components and the effects of climate and anthropogenically- induced landscape changes on local hydrology, geochemistry, and limnology. Crawford Lake is a small meromictic lake near the …
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Quaternary geology of the Campbellford, Trenton, Consecon, Tweed, Belleville, Wellington, Sydenham, Bath, and Yorkshire Island map-areas, Ontario /
… during geological mapping in southeastern Ontario indicate a relatively simple deglaciation history for the area during late Wisconsin time. The ice from the north (part of the Lake Simcoe lobe) and the Lake Ontario ice lobe, which were coalesced during most of late Wisconsin time, …
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The Importance of Thermal Habitat Quality for Pumpkinseed (Centrarchidae: Lepomis gibbosus) in Small and Constructed Coastal Embayments Along the Northwest Shoreline of Lake Ontario
… restore warmwater fish habitat. I describe how Lake Ontario (hereafter the Lake) alters the thermal regime of these small coastal embayments, how the altered thermal regimes affect growth and survival of age-0 warmwater fishes, and how the thermal habitat quality for such fishes can be improved …
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