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Showing 1 to 20 of 21 for “"Lake Huron"”.
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Causes and Consequences of a Collapsing Food Web in Lake huron
Lake Huron has undergone significant declines in abundance at multiple trophic levels. These declines are demonstrated to be the result of a decrease in the overall primary production, from an estimate of 100 g C m -2 yr-1 in the 1970s. to 32 g C m-2 yr -1 in this study. It is hypothesized that …
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Entangled Eden: ecological change and the Lake Huron Commercial Fisheries, 1835-1978
This project examines ecological change in Lake Huron during the nineteenth and twentieth century and investigates the causative role of the commercial fisheries in that change. The repeated failures of various regional and international efforts designed to improve management of the lake’s …
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Life History Variation In Artemisia Campestris On A Lake Huron Sand Dune System
… cover, vegetation type and proximity to the lake were selected for study. The distribution of phenotypes within and among populations, genetic control of the character and the relationship between number of reproductive events and age-specific survivorship were examined. Emergence patterns, …
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Spatial and Temporal Variation in Lake Huron Yellow Perch (Perca flavescens) Life History Traits
… environment, and resource use simultaneously. In Lake Huron, the yellow perch (Perca flavescens) is managed based on 17 geographic management units; however, it is unknown if management units accurately represent discrete perch groups. Furthermore, it is unclear whether yellow perch population …
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Load reduction and invasive mussel effects on eutrophication dynamics in Saginaw Bay, Lake Huron
… influence europhication dynamics in the Great Lakes. The 1978 amendments to the Great Lakes Water Quality Agreement (GLWQA) between the United States and Canada established target phosphorus loads for the lakes, leading to reductions in external phosphorus loading to the Great Lakes. With …
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Community Composition of Aquatic Invertebrates along Dissolved Oxygen Gradients in Lake Huron Coastal Wetland Wet Meadows
… found in the wet meadow zones of 10 wetlands in Lake Huron of the Laurentian Great Lakes.In 2017, I evaluated macrophyte community composition, sampled zoobenthos and fishes, and recorded diel dissolved oxygen trends along multiple transects in 10 coastal wetland wet meadows varying in …
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Investigating population structure and resource use diversity in Lake Huron Lake (Coregonus clupeaformis) and Round (Prosopium cylindraceum) Whitefish using compound specific stable isotopes analysis
… in areas affected by once-through cooling in Lake Huron. Population structure assessments are typically conducted with genetic methodologies but population mixing in Lake Huron complicates detection. In addition, genetic methodologies are not able to capture recent ecological aspects of …
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The Use of Remote Sensing to Map and Monitor Coastal Dune Vegetation Change at Southampton, Ontario, Canada
Coastal dune ecosystems in the Great Lakes Basin are fragile, rare ecosystems that are under increasing threat due to anthropogenic and natural forces. The Chantry Dune system in Southampton, Ontario is one of five major dune systems along the eastern shores of Lake Huron. The dune complex provides …
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INVESTIGATION OF GREAT LAKES LAKE WHITEFISH EGG FERTILITY AND HEALTH
<p>Lake whitefish (<em>Coregonus clupeaformis</em>) recruitment in the Great Lakes has declined, and it remains unclear whether early failure at fertilization and during embryo development varies among spawning stocks. I tested whether fertilization differs among locations and which biological …
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THE STATUS OF INVASIVE DUSKY SLUG (ARION) SPECIES IN THE UPPER GREAT LAKES: A MOLECULAR APPROACH
… subfuscus</em>,<em> </em>in the Upper Great Lakes of the United States using molecular identification methods. <em>Arion fuscus </em>has not previously been reported in the literature in this region, and <em>Arion subfuscus </em>has previously been reported as abundant. However, all previous …
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Determination of genotoxic stress in feral populations of bullheads and carp using the alkaline single cell gel assay.
… of DNA damage. Bullheads from Big Creek (western Lake Erie), Hamilton Harbour (western Lake Ontario) and a number of sites along the Detroit River gave ratios v ranging from 3.36 to 4.65. Samples from Lake St. Clair, Thames River, Lake Huron and Port Franks gave ratios ranging from 1.30 to 2.19. …
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Effects of temperature and density on the facial malformation of hatchery-reared cisco, Coregonus artedi
… contributes to the speciation within the Great Lakes cisco clade. Hatcheries are trying to supplement cisco due to population declines. However, hatchery-reared cisco develop flat, subterminal snouts in hatchery environments instead of the pointed, terminal mouth observed in the wild. The cause …
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Language Ecology and Shift at Baawating, 1600-1971
… surrounding Baawating (at the junction of Lake Superior and Lake Huron) to exemplify: (a) how Indigenous individuals adjusted their language choices in response to institutional language policy? (b) How Canadian Indian Policy more generally affected those language choices? (c) How these …
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Long-term spatiotemporal water quality and phytoplankton dynamics in Severn Sound, Ontario: a delisted great lakes area of concern
… is an embayment system located in south-eastern Lake Huron that was previously designated an Area of Concern (AOC) in 1987 as part of the Great Lakes Water Quality Agreement. The AOC designation was largely due to eutrophication, which has been a historical issue in Severn Sound extensively …
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Population Structure of Lake Whitefish (Coregonus Clupeaformis) on Multiple Spatial Scales: Transitioning to a Genomics Approach
… used to investigate the population structure of lake and round whitefish (Coregonus clupeaformis and Prosopium cylindraceum) in the vicinity of a nuclear power plant on Lake Huron. The analysis of over 200 individuals of each species revealed no fine scale population subdivision relevant to …
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Observations of misovortices within the 7 January 2014 Long Lake-Axis-Parallel lake-effect snow band during the Ontario Winter Lake-effect Systems Project
Recent lake-effect snow field projects in the Eastern Great Lakes region [e.g., the Long Lake-Axis-Parallel (LLAP; 2010-2011) Project and the Ontario Winter Lake-effect Systems (OWLeS; 2013-2014) Project] have revealed the presence of misovortices with diameters between 40 and 4000 m within LLAP …
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Comparison of polychlorinated biphenyl profiles in rat, fish and human tissues; the effects of consuming Great Lakes fish
… after the consumption of contaminated Great Lakes fish. Fish from Lake Superior (LS), Lake Michigan (LM), and Lake Huron (LH) were examined for either total PCB or specific congener concentrations. Total PCBs were highest in carp, lake trout and siscowet lake trout compared to walleye, …
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