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Dissertations / Theses on the topic 'Lake Winnipeg'
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1
Bachinski, Donald Barry. "The feasibility of maritime wilderness tourism on Lake Winnipeg." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0012/MQ32048.pdf.
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Burbidge, Susan Margot. "Holocene environmental history of Lake Winnipeg, thecamoebians and stable lead isotopes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ26848.pdf.
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Burbidge, Susan M. (Susan Margot) Carleton University Dissertation Earth Sciences. "Holocene environmental history of lake Winnipeg; thecamoebians and stable lead isotopes." Ottawa, 1997.
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Block, David. "Growth estimates, habitat use and ecology of the lake sturgeon, Acipenser fulvescens Rafinesque, from Round Lake and mature reservoirs in the Winnipeg River." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62694.pdf.
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Evins, Paul M. "Structural evolution of the Twilight-Mystery Lakes gneiss domes in the Archean Winnipeg River Subprovince, northwest Ontario." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0017/MQ53461.pdf.
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Dettman, Mark. "Policy, actions and results: can meaningful nutrient reductions be achieved within the Minnesota and North Dakota portions of the Red River drainage basin?" 2014. http://hdl.handle.net/1993/24314.
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Numerous treaties and management strategies have been created in an attempt to either prevent or repair water-related problems and/or disputes involving the worlds 263 trans- boundary freshwater regimes. Canada and the U.S. are no different. However, modern times have not only revealed potentially new causes for trans-boundary water-related disputes, but weaknesses within the tools commonly used to address such disputes.
Research was conducted using key groups and government departments within both Minnesota and North Dakota in an attempt to identify whether or not the economic, legal and social landscapes of the two states were favourable to reduce the nutrient loading to their portion of the Red River Drainage Basin which inevitably flows in Manitoba and enters Lake Winnipeg. The research revealed that; i) the difficulty of addressing NPS pollution, ii) a lack of cooperation from private landowners, iii) anti-government intervention, iv) a lack of funding for NPS related programs, v) uncertainties with the science, vi) negative economic impacts of implementing solutions, vii) interference by special interest groups and viii) legislative weaknesses of the Clean Water Act all create barriers that make achieving meaningful nutrient reductions unlikely.
Due to these barriers, Minnesota’s and North Dakota’s hydro-hegemonic influence on nutrient levels within the Red River may aid in dictating potentially disastrous ecological conditions to Lake Winnipeg and place its long-term health in question.
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Ennis, David. "Developing a domestic water supply for Winnipeg from Shoal Lake and Lake of the Woods: the Greater Winnipeg Water District Aqueduct, 1905 – 1919." 2011. http://hdl.handle.net/1993/4457.
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The water source for The City of Winnipeg is Shoal Lake near the Manitoba-Ontario border, 145km east of the city, and is delivered by a gravity powered system known as the Winnipeg Aqueduct. It was built during World War 1. The system is 150km in length, primarily in an enclosed conduit operating under open channel flow, and crosses eight rivers. The project was built by the Greater Winnipeg Water District. The concept of the Water District, is administration, the design of the aqueduct’s components, the contract administration, and the construction procedures employed in implementing the system are explained. The purchase and topographical modification of land belonging to the First Nation residents of Shoal Lake Band 40 was essential to the development of the project. There are ongoing issues for this First Nation arising from that purchase.
8
Mavros, William V. "Genetic, morphological and isotopic population structure of lake whitefish (Coregonus clupeaformis) in northern Lake Winnipeg and Playgreen Lake." 1993. http://hdl.handle.net/1993/7344.
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A 61-day study was designed to assess the effects of the level of dietary linolenic acid (LNA) and its ratio to linoleic acid (LA) on plasma lipoproteins (LP) and the fatty acid composition of the platelet phospholipids (PL) in twelve normolipidemic men. The study consisted of four diet periods: a 7-day pre-emperimental period and two 18-day experimental periods separated by an 18-day washout period. Diets supplied 53% of total energy as carbohydrate, 14% as protein and 33% as fat. Added fat accounted for 79% of the total fat or 29% of total energy. A mixture of fats (MF) was provided during the pre-experimental and washout periods. Subjects were randomly assigned to receive two or three experimental diets containing: i) 100% low linolenic canola oil (LLNA), ii) 85% regular canola oil and 15% sunflower oil (CAN), or iii) 67% regular canola oil, 15% flax oil, and 18% sunflower oil (FLAX). The experimental diets provided similar amounts of LA but different amounts of LNA. The LA/LNA ratios and the LNA levels of the diets were 6.3, 4.3 and 2.5, and 4%, 6% and 11% respectively. Fasting 12-hour blood samples were analyzed for plasma lipids and LP. Platelets were isolated from the plasma and the fatty acid composition of the phosphatidylcholine (PC), phosphatidylethanolamine (PE) and alkenylacyl ethanolamine phosphoglyceride (PPE) fractions were determined. Plasma total cholesterol (TC) and low density lipoprotein cholesterol (LDL-C) decreased on all experimental diets. Plasma triplycerides (TG) and high density lipoprotein cholesterol (HDL-C) decreased (p<0.05; p<0.03, resp.) on the FLAX diet, whereas very low density lipoprotein cholesterol (VLDL-C) decreased (p<0.01) on the CAN diet. Fatty acid analyses indicated that LNA levels of PL increased on the experimental diets. Levels of eicosapentaneoic acid (EPA) increased on the FLAX diet but very unaffected by the LLNA and CAN diets. Levels of long chain (LC) n-3 PUFA decreased on the LLNA diet, were unchanged on the CAN diet, but showed a trend towards increased levels on the FLAX diet. By contrast, platelet AA levels and n-6 LC PUFA levels decreased on all experimetnal diets. Thus, the LLNA diet (LA/LNA ratio of 6.3) reduced n-3 LC PUFA levels in platelet PL, primarily as a result of a decrease in the DPA level. Diets with lower LA/LNA ratios (2.5 and 4.3) maintained total n-3 LC PUFA levels, however only the diet with the lowest LA/LNA ratio increased platelet EPA levels.
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Kamada, Daigo. "Response of Zooplankton Community of Lake Winnipeg to Environmental Changes." 2012. http://hdl.handle.net/1993/13702.
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Lake Winnipeg has been subject to intense eutrophication and invasive species such as Rainbow Smelt and Eubosmina coregoni for the last 40 years. This study demonstrated significant increases in total phosphorus, total nitrogen, chlorophyll-a, overall zooplankton abundance, and specifically Cladocera, between 1969 and the first decade of the 21st century. There were specific basin differences in the long-term changes of the Cladocera community, with the species Chydorus sphaericus and Ceriodaphnia quadrangula negatively affected by high levels of phosphorus, nitrogen and chlorophyll-a. Moreover, long-term change in the Cladocera community composition and abundance throughout the years (1969-2011) during summer was correlated with intensifying eutrophication. Additionally, weak diel vertical migration in the zooplankton community was observed for the first time in Lake Winnipeg.
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Miles, John Andrew. "Allocating the mineral and park resources on the east side of Lake Winnipeg." 2016. http://hdl.handle.net/1993/31305.
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Stankewich, Shawn. "An ecological pilgrimage: fostering ecological literacy in the Lake Winnipeg watershed." 2014. http://hdl.handle.net/1993/23161.
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This practicum investigates the application of ecological literacy theory to the practice of landscape architecture. Ecological literacy can be defined as the ability to comprehend the complex relationships of one’s surrounding environment and live life with greater environmental sensitivity. The Lake Winnipeg watershed is home to over 5 million people, and draws its water from four Canadian provinces and four American states. With the anthropogenic manipulation of the landscape, native watershed functions like water retention and filtration have been compromised. Each year, increasing amounts of phosphorus enter the lake from agricultural and urban fertilisers and effluents. This nutrient loading creates algal blooms toxic to humans and other species that rely on the lake for survival. The proposed programmatic framework and design interventions are intended to address these impacts by fostering watershed sustainability and ecological literacy, while engaging citizens in the processes associated with increasing local ecological integrity.
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Heuring, L. G. "A historical assessment of the commercial and subsistence fish harvests of Lake Winnipeg." 1993. http://hdl.handle.net/1993/22977.
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McDougall, Craig. "Investigating downstream passage of lake sturgeon, Acipenser fulvescens, through a Winnipeg River generating station." 2012. http://hdl.handle.net/1993/5082.
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Lake sturgeon, recently recommended to be listed as an endangered species under the Species at Risk Act, inhabit the various impoundments of the Winnipeg River system. Downstream passage through hydroelectric generating stations represents one of the major data gaps in our understanding of how hydroelectric development may be impacting lake sturgeon populations. Acoustic telemetry was used to investigate coarse-scale movements of juveniles, sub-adult and adults throughout the Slave Falls Reservoir, a 10 km long Winnipeg River impoundment, to assess patterns of downstream passage susceptibility and investigate fine-scale movements in the vicinity of the Slave Falls Generating Station. Movements of juveniles and sub-adults were generally restricted to areas of interconnected deep-water habitat, with movements through the shallow river narrows that sub-divide the Slave Falls Reservoir being rare. Adults did move through these narrows, albeit infrequently. Juveniles and sub-adults tagged in the lowermost section of the reservoir, as well as several adults tagged throughout the reservoir, were found to periodically utilize habitat immediately upstream of Slave Falls, where they would be susceptible to entrainment. Mean entrainment rates were estimated at 3.1% per year for adults tagged throughout the reservoir, and 17.9% per year for sub-adults tagged in the lowermost section of the reservoir. Fine-scale movement tracking revealed that three of eleven observed downstream passage events occurred via bottom-draw regulating gates, while another four events were also reasoned to have occurred via this route. The routes of the remaining four could not be determined. Eight of the eleven downstream passage events observed in this study were survived. While the survival of the remaining three fish could not be confirmed, it is highly likely that they also survived. Length-at-age analysis, supported by genetic methods, revealed that 23 of 151 (15.2%) of the lake sturgeon between 525 and 750 mm (fork length) captured in the 6 km stretch of river downstream of Slave Falls were fast-growing outliers, reasoned to have passed downstream through the Slave Falls Generating Station.
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Bryan, Matthew George. "The implications of cyanobacteria blooms on the base of the Lake Winnipeg food web." 2013. http://hdl.handle.net/1993/22049.
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Over the past two decades, Lake Winnipeg has been experiencing increasingly rapid eutrophication, and large cyanobacterial blooms now form in the North Basin in most years in late summer or fall. Cyanobacteria are considered a relatively poor food source compared with other phytoplankton, but the impacts of these blooms upon the primary consumers in the lake have not previously been researched. A microscopic analysis of whole water samples found cyanobacteria to be scarcely present in summer 2012, with nitrogen-fixing and non-fixing cyanobacteria comprising 11.2% and 8.4% of the basin-wide biovolume, respectively, and all but absent in fall. Gut content analysis of chironomids found that cyanobacteria made up an almost negligible part of their diet. Stable isotope analysis revealed that nitrogen-fixing cyanobacteria reduced phytoplankton δ15N values, and that this same reduction could be traced through the zooplankton, but not down to the sediments or chironomids.
15
MacLean, Joy. "Fathoming Lake Winnipeg: the role of commercial fishers and their local knowledge in decision-making." 2010. http://hdl.handle.net/1993/4075.
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Lake Winnipeg and the issue of its declining health are at the heart of this research. At stake is not only the integrity of this ecosystem but also the substantial commercial fishery that depends upon it. Finding a solution to this problem involves a complex mixture of social, economic and ecological considerations. In response to such multi-faceted questions there is an increasing awareness for the role of public participation in decision-making. In recognition of this, there is a move away from top-down governance to one that acknowledges the need for innovative approaches to governance as well as the role for the participation of non-state actors in decision-making. This type of participatory governance decentralizes power in order to permit citizens the opportunity to bring to bear their knowledge in the quest for sustainable solutions. One such source of knowledge is local knowledge. Accordingly, this research explores the local knowledge about Lake Winnipeg held by its commercial fishers and how that knowledge is included in the Lake’s governance. This goal is pursued through the examination of four specific objectives that are: 1) to establish the sorts of local knowledge that fishers hold and the ways in which they gained this knowledge; 2) to identify what informal and formal governance processes already exist for participation of the fishers in the governance of Lake Winnipeg; 3) to determine by what means and to what extent this local knowledge has been shared in governance processes about the Lake; 4) to identify opportunities for the incorporation of the fishers’ local knowledge into the governance of the Lake.
A qualitative approach was used to address the goals of the research and included literature review, a focus group with fishers, and interviews with fishers and government personnel. Analysis revealed that the commercial fishers possess local knowledge extending across a broad range of topics from hydrology, ecology, weather, water quality and fish diet, habitat, behaviour and morphology. This knowledge was gained primarily through personal observation, but also from other fishers, scientists, and the media.
The more formal participatory processes in which the fishers became engaged have been limited to issues relating to the fishery. These formal processes included the Lake Winnipeg Fisheries Management Advisory Board, the Manitoba Commercial Inland Fishers Federation, and the Lake Winnipeg Quota Entitlement Review Task Force. In addition to these formal processes there was also a less formal network of contact between fishers and those in government and science. This network has involved fishers sharing their local knowledge about the fishery and. to a lesser degree, about the Lake’s environment more generally. Taken together, these various processes have supplied, with variable success, some opportunities for fishers to share their local knowledge and influence fishery related decisions. However, the extent of their participation has been significantly impaired by a number of critical factors. Of these, the most detrimental barrier identified was a lack of meaningfulness and transparency in the key process, the Advisory Board. This, in turn, resulted in frustration, mistrust of government, and ultimately, withdrawal from that process. Reflecting on these problems, fishers made a number of recommendations including the creation of a co-management board and the use of interviews and surveys, public meetings, and collaborative research as ways to ensure that their knowledge is shared and that their concerns and recommendations are considered in meaningful ways that influence fishery and Lake-related decisions.
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Pálsson, Sölmundur Karl. "Where the past meets the present: an assessment of the social and ecological determinants of well-being among Gimli fishers." 2014. http://hdl.handle.net/1993/24013.
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Lake Winnipeg is under examined, yet a very interesting lake. This 10th largest lake in the world supports a small-scale fishery, which today is pre-dominantly for walleye. Currently, the fishery is very strong. Historically, however, it has been characterized by fluctuations in both catches and returns. The end of the 1960s and the beginning of the 1970s was a turning point for the fishing industry. At that time, the fishery experienced declining catches and diminishing returns. In order to reverse the trend, the Provincial Government of Manitoba introduced a quota system while the Federal Government established the Freshwater Fish Marketing Corporation (FFMC) to handle the marketing of freshwater fish. Today, the fishery on Lake Winnipeg has been at a record level of production and these two institutions play a significant role in the fishery. To gain an insight into fishers’ social context in the Gimli area, a social well-being analysis was applied following design of the ESRC Wellbeing in Developing Countries Research Group adapted by Sarah Coulthard and colleagues. The social well-being analytical tool shed light on three domains of fisher’s life; material well-being, subjective well-being and relational well-being. Together, these domains give an insight into how satisfied fishers are with their current social environment. The analysis of fishers’ social experience in the Gimli area shows that current policy seems to be working equally well in the areas of relational and subjective well-being. In fact, the quota system and the FFMC still have great impact on the fishers, not only from an economic view but also for their subjective values and relational well-being.
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Zubrycki, Karla Marie. "Civil Society, Good Governance and the News Media: A case study of civil society inclusion in Winnipeg Free Press coverage of Lake Winnipeg nutrient loading." Thesis, 2010. http://hdl.handle.net/10012/5183.
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Governance and participatory democracy theory suggest that strong policy can stem from the inclusion of all societal voices in discussion of options, and that the public must have a strong base of information in order to participate fully in democracy. The news media can be an important vehicle for these voices and a central source of information. However, academic literature has recorded that “elite” sources, such as government, dominate news coverage to the disadvantage of “non-elite” sources, such as civil society groups and citizens, a situation that results in imbalanced information in the news. This thesis examines patterns of civil society inclusion in Winnipeg Free Press coverage of Lake Winnipeg water quality, and discusses the implications of findings for good governance.
Three methods of inquiry are used: 1) a literature review, 2) a quantitative content analysis of newspaper articles published in the Winnipeg Free Press from August 1991 through December 2008, and 3) interviews with civil society members with an interest in Lake Winnipeg water quality. Content analysis findings indicate that civil society sources generally received less coverage than “elite” sources, were used less frequently, were given lower prominence within articles, had fewer chances to “define” coverage and were less often used in “hard” news compared to opinion sections.
Interview findings challenge the dominant view within media literature that journalists are fully responsible for “elite” source dominance due to journalist bias in source selection, the “beat system” of journalism that focuses on governmental institutions, decisions made by editors and corporate or political preferences of news entities. While journalism practices are undoubtedly a factor, this study finds that there are also shortcomings within civil society organizations and the framework within which they operate that limit their engagement with the media. Four key factors are identified. Registered charities are often hesitant to speak with the media due to real and perceived legal restraints on their communications activities under Canada’s Income Tax Act. Many organizations are apprehensive about voicing concerns in the media for fear of losing funding. Few organizations have communications staff, or even staff members trained in media outreach, resulting in a passive approach to communications. And few organizations have the capacity to deal with media requests for information within journalism deadlines. In addition, the interview data indicate that those organizations actively pursuing media coverage are focusing attention on smaller newspapers, alternative media and self-published pieces, which suggests that the mainstream news media are perhaps of less importance to such organizations than in the past. Alternatively, it is possible that organizations are finding access to the mainstream media effectively cut off.
Finally, recommendations are made to civil society organizations on how they can increase their prominence in the news and conquer their reluctance to deal with the media, and to the media on how to improve attention to civil society voices. For the latter, ideas are drawn from public journalism, a journalism movement which emphasizes citizens as sources.
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Barth, Cameron Charles. "Ecology, behavior, and biological characteristics of juvenile lake sturgeon, Acipenser fulvescens, within an impounded reach of the Winnipeg River, Manitoba, Canada." 2011. http://hdl.handle.net/1993/4800.
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The lake sturgeon, Acipenser fulvescens, was once abundant throughout Canada and the United States, however, high commercial harvests and habitat alterations have dramatically reduced most populations. The species was extirpated from many rivers that it once inhabited, and has been designated as threatened or endangered throughout its range. Currently, few healthy lake sturgeon populations remain and the species is receiving considerable attention with respect to its protection and recovery. Although considerable effort is underway to conserve the species, several factors, including over-harvest and habitat alteration, pollution and a general lack of understanding about lake sturgeon ecology and behavior continue to hamper recovery efforts. This thesis examined the ecology and behavior of juvenile lake sturgeon within a 41 km long impounded section of the Winnipeg River, a large river in the Canadian Shield, over a three-year period (2006 – 2008). Habitat preferences, species associations, diet, and movement were described on a seasonal basis. Biological characteristics were also described for juvenile lake sturgeon within the study area. Studies presented in this thesis are among the first conducted for juveniles of this species in the Hudson Bay drainage basin, and from large riverine environments in general. Results are important, not only for improving our understanding of lake sturgeon at the juvenile life history stage, but for facilitating further research. In particular, future research studies identified in the final chapter have the potential to enhance our understanding of factors influencing mortality during the early life history stages of the lake sturgeon, and therefore, greatly enhance recovery efforts.
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Speers, Jeffery Duncan. "The effects of environment on catch and effort for the commercial fishery of Lake Winnipeg, Canada." Thesis, 2007. http://hdl.handle.net/1993/260.
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Environmental factors affect fish distribution and fisher behavior. These factors are seldom included in stock assessment models, resulting in potentially inaccurate fish abundance estimates. This study determined the impact of these factors using the commercial catch rate of sauger (Sander canadensis) and walleye (Sander vitreus) in Lake Winnipeg by: (1) the use of satellite data to monitor turbidity and its impact on catch via simple linear regression and (2) the effect of environment on catch and effort using generalized linear models. No statistically significant relationship was found between catch and turbidity; a result which may be due to small sample sizes, the fish species' examined, and variable turbidity at depth. Decreased effort was correlated with harsh weather and decreased walleye catch. Increased walleye catch was correlated with low temperature and low Red River discharge. Increased sauger catch was correlated with high temperature, high cloud opacity, and average Red River discharge.<br>October 2006
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Sheppard, Kathleen. "Spatial and seasonal variation in diet, growth and condition of walleye (Sander vitreus), sauger (Sander canadensis) and dwarf walleye (Sander vitreus) in Lake Winnipeg, Manitoba." 2013. http://hdl.handle.net/1993/18342.
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Lake Winnipeg has the second largest walleye fishery in North America. The North and South Basins of the lake differ in many ways, e.g. water temperature, turbidity, and fish community. The study objectives were to determine if (a) growth, condition or diet of walleye, sauger or dwarf walleye differed between basins, (b) among seasons, and (c) whether the invasive rainbow smelt are associated with these differences. Walleye, sauger and dwarf walleye were caught using gill-nets and analysed for growth, condition and diet in all seasons. Walleye and sauger in the North Basin showed higher growth rates and condition than in the South Basin. Diet in the South Basin had more diverse species composition, whereas in the North Basin, the diet consisted almost entirely of rainbow smelt. Some seasonal variation was also documented and the impact of rainbow smelt seems to be positive for these piscivorous fish in Lake Winnipeg.
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Remnant, Richard A. "An assessment of the potential impact of the rainbow smelt on the fishery resources of Lake Winnipeg." 1991. http://hdl.handle.net/1993/22925.
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Backhouse, Stephanie Maxwell. "Using microsatellite and mitochondrial DNA variation to investigate population structure of Walleye (Sander vitreus) in Lake Winnipeg." 2010. http://hdl.handle.net/1993/29793.
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Grosshans, Richard. "Cattail (Typha spp.) biomass harvesting for nutrient capture and sustainable bioenergy for integrated watershed management." 2014. http://hdl.handle.net/1993/23564.
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High levels of phosphorus loading in Lake Winnipeg, Manitoba, Canada are causing eutrophication and algal blooms of increasing intensity and frequency. Phosphorus is also a strategic and limited natural resource critical for plant growth, and essential for agriculture and global food security. This research study demonstrated an innovative environmental engineering approach to address multiple sustainable development challenges. Cattail (Typha spp.), a large competitive emergent aquatic plant, was harvested to capture and remove nutrients that would otherwise cause eutrophication in aquatic systems, and utilized as a biomass material for industry. Cattail reaches maturity in less than 90 days, and late summer/early fall harvests yielded average 15 to 20 t DM/ha, and captured 30 to 60 kg/ha/year of phosphorus. Once harvested, nutrients locked in plant tissue are prevented from being released into the environment via natural decomposition. Utilizing harvested biomass as a bioenergy feedstock provided a further benefit displacing fossil fuels for heating, and generated valuable carbon offsets. Cattail was compressed into densified fuel products, and combustion trials revealed an average calorific heat value of 17 MJ/kg to 20 MJ/kg, comparable to commercial wood pellets. Average ash content was 5 to 6%, and no major concerns identified regarding combustion emissions and ash. Estimated greenhouse gas (GHG) mitigation potential from coal displacement was one tonne of cattail biomass generated 1.05 tonnes of CO2 offsets. Additionally, up to 88 % of total phosphorus was recovered in ash following combustion in solid fuel burners. Harvesting cattail biomass offers greatest feasibility if combined for multiple purposes: nutrient capture, habitat, bioenergy, carbon offsets, water quality credits, and higher value end products and biomaterials (i.e. biochar). Economics of harvesting need to be further explored at the pilot and commercial scale for this novel renewable and sustainable ecological biomass feedstock. From an agricultural context, this biomass resource is presently undeveloped. It is a plant species prized for its nutrient capture and water quality benefits, and a biomass feedstock for bioenergy and high value end-products that grows on marginal agricultural land, not competing with prime land and food crops.
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Vogel, Beth Elaine. "A regional assessment of the effects of alternative transmission corridors on outdoor recreation: Manitoba Hydro's proposed D.C. line east of Lake Winnipeg." 2016. http://hdl.handle.net/1993/31304.
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A regional assessment of the potential effects of introducing transmission facilities in alternative corridors east of Lake Winnipeg was conducted. The primary focus of the study was on the impact of transmission facilities on outdoor recreation. Several proposed transmission corridors were compared on the basis of the potential negative impact on five factors: existing development providing outdoor recreation facilities, polices and planning objectives east of Lake Winnipeg, natural resources used for outdoor recreation, ecological processes and natural ecosystems and the appearance of the landscape. The West Corridor and W₁ trunk along the east shore of Lake Winnipeg was considered to have the least impact on outdoor recreation, and further study of this alternative was recommended.<br>1978
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Keam, Darren. "The sustainability of municipal wastewater irrigation in the Interlake Region of Manitoba as a means of nitrogen and phosphorous abatement for Lake Winnipeg." 2011. http://hdl.handle.net/10170/428.
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In Manitoba there are an estimated 200 small and 10 large wastewater treatment systems
contributing nutrients to surface water when effluent is discharged. The objective of this study
was to assess the sustainability and social acceptance of wastewater irrigation in the southeast
Interlake region. It was concluded that sustainably irrigating forage crops would be challenging.
The combination of soils with only ratings of fair for irrigability and the low quality of
wastewater limits the long term sustainability of irrigation. Only one study site maintains a high
potential to develop a wastewater irrigation program due to sufficient suitable land and
appropriate wastewater quality. The social acceptance of wastewater irrigation is mixed with
only about half the survey respondents favourable to irrigation or reuse of wastewater.
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Olynyk, Andrew John. "A diet analysis of two zooplanktivores, the non-indigenous rainbow smelt (Osmerus mordax) and the native cisco (Coregonus artedi) in Lake Winnipeg, Manitoba." 2013. http://hdl.handle.net/1993/18325.
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Diets of two zooplanktivores were studied in Lake Winnipeg: the non-indigenous rainbow smelt (Osmerus mordax) and the native cisco (Coregonus artedi). Gut contents of smelt (70-130 mm total length) and cisco (100-200 mm TL) were concurrently collected with zooplankton (integrated vertical tows) from pre-determined locations throughout Lake Winnipeg in 2010 and 2011. When spatially separated, both zooplanktivores showed similar shifts from preference for fast-moving copepods during low total zooplankton density to slow-moving large cladocerans (Daphnia spp. and Eubosmina sp.) during high total zooplankton density. When spatially overlapped in the North Basin, dietary overlap was high between smelt and cisco, but possible vertical segregation was apparent during daylight-dark trawls. Diel variation in smelt diet was minimal. Overall, impact of smelt on the food web seemed weaker than in other smelt-invaded lakes, potentially owing to the warm, shallow nature of Lake Winnipeg providing a poorer quality habitat than cooler, deeper lakes.
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Asgarali, Ashmede S. J. "Proposed Manitoba Hydro D.C. transmissionline east of Lake Winnipeg: Identification of alternative corridors with a view to minimize adverse effects on outdoor recreation." 2015. http://hdl.handle.net/1993/30688.
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A regional assessment of the potential impacts of transmission facilities on the area east of Lake Winnipeg was conducted in order to identify alternative transmission corridors with the emphasis on minimizing the adverse effects on outdoor recreation. A regional resource inventory of the Biotic, Socio-cultural, and Recreational Components of the study area was assembled. Impacts of severe, high, moderate and low were defined and applied to the resource inventory. Four possible corridor routes; --A, B, C and D --were identified at the northern extent of the study area, converging to three just south of the fifty-second parallel; one with its associated trunk line along the east shore of Lake Winnipeg, the other with its associated trunk line along the midline of the study area and the third, along the Manitoba-Ontario border veering southeast to a common exit near the Fort Alexander Indian Reserve. Finally, the corridor on the east shore of Lake Winnipeg and the central corridor converge in the Manigotagan area and exit
the study area near the Fort Alexander Indian Reserve.<br>October 2015
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Hanke, Gavin Frank. "A survey of the fishes of Lake Winnipeg and interactions of the introduced white bass with the native ichthyofauna of Hudson Bay drainage : with emphasis on young-of-the-year fishes in nearshore environments." 2009. http://hdl.handle.net/1993/3735.
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This project examined the littoral zone fish communities of Lake Winnipeg and adjacent waterways to determine 1) the distribution of all nearshore fishes, 2) the seasonal use of nearshore habitat by pelagic fish, 3) the food resources used by nearshore fish, 4) the fish species that are sympatric with white bass and 5) the diet similarity among fish species in sympatry with the invading white bass. Four basic distribution patterns were identified for the fishes of the Red River, Lake Winnipeg and their tributaries, and these are presented as individual species maps. Fish move inshore in early to late June and remain there until September. All combinations of pelagic fish occured in samples, suggesting no spatial or temporal habitat shift in the presence of white bass. Pelagic insectivorous, pelagic piscivorous, pelagic zooplanktivorous and benthic insectivorous feeding guilds were defined from analysis of the diets of nearshore fishes. Feeding guilds appeared stable throughout the summer with the exception of emerald shiners, which ate zooplankton and insects in varying proportions. Diet analysis determined that yellow perch, emerald shiner, goldeye, juvenile walleye and sauger and cisco feed on the same zooplankton species as juvenile white bass. Adult white bass feed on the same fish as adult walleye and sauger. Pelagic fish commonly found in sympatry with the white bass include goldeye, mooneye, walleye, sauger, emerald shiner, and yellow perch. These fish are found throughout the lake with no northward range retreat in response to invasion of white bass. Segregation by time occurs in this lake and minimizes contact between white bass, cisco and lake whitefish. There is no evidence of abundance decline, habitat shift or diet shift in native fish in relation to the presence of white bass and therefore there is no evidence for competition resulting from the white bass invasion. The success of white bass is due to exploitation of abundant food items (calanoid copepods and leptodorid cladocerans when young and emerald shiners and perch as adults) thereby eliminating competition with native piscivores. The rapid growth, and the lack of potential predators (walleye and sauger) in Lake Winnipeg also contributed to the success of the white bass.
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Weinberg, Alon David. "Dialogue, displacement and return - contexts of a journey on a two-way road: Anishinaabek responses to all-weather roads through Waabanong Nakaygum: memory and continuity on the eastern shores of Lake Winnipeg and beyond." 2014. http://hdl.handle.net/1993/23243.
Full textAbstract:
East of Lake Winnipeg is what conservationists call the ‘east shore wilderness’ / ‘heart of the boreal.’ The largest contiguous tract of unindustrialized boreal forest on Earth, this area has been the focus of 15 years of discussion and planning in Manitoba. The area is also designated Waabanong Nakaygum, a homeland to the Anishinaabek of this bush-meets-lake region. Waabanong has seen limited access during the industrial period of personal mechanized mobility due to a lack of constructed all-weather roads. However, an older pattern of travel and mobility does exist across the land, for centuries constituting traditional Anishinaabek patterns of land use and trade. As all-weather roads are being constructed along Lake Winnipeg, oral interviews will examine the question: will the older trails remain in the collective culture of the people or shall the north-south cultural and economic flows replace the east-west bush history traced by the rivers that wind through?
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Sutherland, Duncan. "Stormwater retention lakes in Winnipeg : an assessment." 1989. http://hdl.handle.net/1993/22875.
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Swanson, G. "Growth of walleye (Stizostedion vitreum vitreum, Mitchill) in stormwater retention ponds and overwinter survival of stocked fry and fingerlings in two man-made lakes in Winnipeg, Manitoba." 2009. http://hdl.handle.net/1993/3567.
Full textAbstract:
The walleye Stizostedion vitreum vitreum (Mitchill) , is the most economically important of Canada's inland fish species. Canadian commercial fisheries harvest several hundred metric tonnes of walleyes annually (Scott and Crossman 1979). Similarly, an angler survey in Ontario revealed that walleyes were the most commonly sought species and the second most abundant in angler's catches (Scott and Crossman 1979). Exploitation of this resource and habitat deterioration have, however, combined to reduce the quality of both commercial and angling fisheries in Dauphin Lake, Manitoba (Gaboury 1985). Statistics for the Dauphin Lake commercial fishery, available from the Manitoba Department of Natural Resources, Fisheries Branch, indicate a two to three fold drop in walleye catch for the period 1931-1975. In an attempt to enhance such walleye fisheries, walleye propagation has a history dating back to the late 1800's. Artificially propagated fry have been planted into lakes in Minnesota since 1887 (Smith and Moyle 1945). In Wisconsin, Wistrom (1957 ) estimates that a fry stocking program began as early as 1910 and that by 1937 over 839 million walleye fry were produced for stocking. These plants were often ineffective, and as a result pond reared fingerling production programs were undertaken in 1940 in both Minnesota (Smith and Moyle 1945) and Wisconsin (Wistrom 1957). Since then cultured fingerling walleyes have been planted into many waters with natural populations. Assessment of both fry and fingerling stocking has revealed varying degrees of success (Carlander et al. 1960; Schneider 1969; Jennings 1970; Klingbeil 1971; Kempinger and Churchill 1972; Forney 1975; Ward and Clayton 1975; Schweigert et al. 1977). Therefore, due to decreasing walleye stocks and in association with the Prairie Provinces Fishery Enhancement program, young of the year walleye fry were planted in two manmade lakes and two stormwater retention ponds in Winnipeg, Manitoba in 1982. The objectives of the research were: 1. To study the factors controlling growth and production in rearing ponds and, 2. To study the effects of time and size of transfers on subsequent survival in two man-made lakes. The first chapter deals with growth and production in rearing ponds and the second chapter concerns their subsequent survival after transfer into Fort Whyte Lakes 3 and 4.