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Relevant bibliographies by topics / Lake Winnipeg

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Academic literature on the topic 'Lake Winnipeg'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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Journal articles on the topic "Lake Winnipeg"

1

Baulch, Helen. "Saving Lake Winnipeg." Canadian Water Resources Journal / Revue canadienne des ressources hydriques 40, no. 2 (2015): 231–32. http://dx.doi.org/10.1080/07011784.2014.987697.

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2

Wassenaar, Leonard I., and Yerubandi R. Rao. "Lake Winnipeg: The forgotten great lake." Journal of Great Lakes Research 38 (January 2012): 1–5. http://dx.doi.org/10.1016/j.jglr.2012.04.004.

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SÆTHER, OLE A. "Procladius Skuse from Lake Winnipeg, Manitoba, Canada, with keys to some females and immature stages of the genus (Diptera: Chironomidae)." Zootaxa 2726, no. 1 (2019): 34. http://dx.doi.org/10.11646/zootaxa.2726.1.2.

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Procladius (Holotanypus) rugulosus sp. n. from Lake Winnipeg, Manitoba, Canada, is described as male, female and pupa. Six additional species of Procladius Skuse are recorded from Lake Winnipeg of which 5 belong to the most common species in the lake. The immature stages of P. (Psilotanypus) bellus (Loew), P. (Holotanypus) culiciformis (L.), P. (H.) denticulatus Sublette, P. (H.) freemani Sublette, and P. (H.) sublettei Roback are redescribed. Species keys are given to sufficiently known Nearctic females, to pupae of Lake Winnipeg, and to Nearctic larvae of Procladius. The distribution of Procladius in Lake Winnipeg is mapped and discussed. The separation of larval instars is shown approximately to follow Dyar’s rule.

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McKindles, Katelyn M., Paul V. Zimba, Alexander S. Chiu, et al. "A Multiplex Analysis of Potentially Toxic Cyanobacteria in Lake Winnipeg during the 2013 Bloom Season." Toxins 11, no. 10 (2019): 587. http://dx.doi.org/10.3390/toxins11100587.

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Lake Winnipeg (Manitoba, Canada), the world’s 12th largest lake by area, is host to yearly cyanobacterial harmful algal blooms (cHABs) dominated by Aphanizomenon and Dolichospermum. cHABs in Lake Winnipeg are primarily a result of eutrophication but may be exacerbated by the recent introduction of dreissenid mussels. Through multiple methods to monitor the potential for toxin production in Lake Winnipeg in conjunction with environmental measures, this study defined the baseline composition of a Lake Winnipeg cHAB to measure potential changes because of dreissenid colonization. Surface water samples were collected in 2013 from 23 sites during summer and from 18 sites in fall. Genetic data and mass spectrometry cyanotoxin profiles identified microcystins (MC) as the most abundant cyanotoxin across all stations, with MC concentrations highest in the north basin. In the fall, mcyA genes were sequenced to determine which species had the potential to produce MCs, and 12 of the 18 sites were a mix of both Planktothrix and Microcystis. Current blooms in Lake Winnipeg produce low levels of MCs, but the capacity to produce cyanotoxins is widespread across both basins. If dreissenid mussels continue to colonize Lake Winnipeg, a shift in physicochemical properties of the lake because of faster water column clearance rates may yield more toxic blooms potentially dominated by microcystin producers.

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Patalas, K., and A. Salki. "Crustacean Plankton in Lake Winnipeg: Variation in Space and Time as a Function of Lake Morphology, Geology, and Climate." Canadian Journal of Fisheries and Aquatic Sciences 49, no. 5 (1992): 1035–59. http://dx.doi.org/10.1139/f92-116.

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Rivers draining different geological basins have the most important impact on the formation of the planktonic community in Lake Winnipeg. Very diverse patterns of distribution of individual species reflected the complexity of the water masses structured by lake morphology and the configuration of river inflows. Of the 34 species identified (15 copepods and 19 cladocerans), 12 were found exclusively in the South Basin, 7 exclusively in the North Basin, and 15 were common to both basins. A "core" group of 12 species was distributed over the whole lake, but the remaining 22 species ("unsuccessful invaders") were present only in restricted areas, mostly adjacent to river inflows. Plankton species composition has not exhibited major changes after 40 yr, but abundance has at least doubled, probably due to eutrophication. Several times more planktonic crustaceans were found in the western part of the lake, affected by sedimentary drainage, than in the eastern part, influenced by the Precambrian Shield. The plankton community in a lake as large as Lake Winnipeg can be affected by differences in climate within its shores. Midsummer epilimnion temperature was the single best parameter predicting crustacean abundance in Lake Winnipeg and other North American great lakes and, combined with phosphorus loading, explained 97% of variance.

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Kristofferson, A. H., and J. W. Clayton. "Subpopulation Status of Lake Whitefish (Coregonus clupeaformis) in Lake Winnipeg." Canadian Journal of Fisheries and Aquatic Sciences 47, no. 8 (1990): 1484–94. http://dx.doi.org/10.1139/f90-166.

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Spawning lake whitefish in Lake Winnipeg from Dauphin River–Lake St. Martin, Traverse Bay, Berens River–Poplar River–Big Black River and Grand Rapids and in Little Playgreen Lake are accorded subpopulation status based on morphometric measurements, meristic counts, and differences in frequencies of alleles at the muscle glycerol-3-phosphate dehydrogenase (g-3-pdh-b) locus. The frequency of the g-3-pdh-b-3 allele in samples from Dauphin River–Lake St. Martin was 0.77 compared with 0.46 for whitefish from the remainder of Lake Winnipeg and Little Playgreen Lake. Two loci for isocitrate dehydrogenase and one lactate dehydrogenase locus are also polymorphic in these fish but no significant allele frequency differences were found at these loci among the samples of spawners compared above. Hatchery-reared lake whitefish, obtained from stock in Clearwater Lake and William Lake and planted as fry or eyed eggs in Lake Winnipeg at Dauphin River and Grand Rapids, do not appear to have made a detectable genetic contribution to the local whitefish stocks, based on differences in g-3-pdh-b and idh Bβ allele frequencies among parent stock and spawners captured near the release sites.

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Anderson, Philip J., Sarah Warrack, Victoria Langen, Jonathan K. Challis, Mark L. Hanson, and Michael D. Rennie. "Microplastic contamination in Lake Winnipeg, Canada." Environmental Pollution 225 (June 2017): 223–31. http://dx.doi.org/10.1016/j.envpol.2017.02.072.

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8

Wiegand, M. D., T. A. Johnston, W. C. Leggett, et al. "Contrasting strategies of ova lipid provisioning in relation to maternal characteristics in three walleye (Sander vitreus) populations." Canadian Journal of Fisheries and Aquatic Sciences 64, no. 4 (2007): 700–712. http://dx.doi.org/10.1139/f07-033.

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We examined how the lipid content and fatty acid composition of walleye (Sander vitreus) ova varied with respect to maternal characteristics, particularly indices of body nutrient reserves, within three spawning populations that varied in maternal age, size, and somatic lipid reserves. We also compared the variability in ova lipid composition among three populations with that observed among spawning years within one of these populations. Maternal characteristics had little influence on ova lipid content. In Lake Ontario, percentages of docosahexaenoic acid (22:6(n-3), DHA) and arachidonic acid (20:4(n-6), AA) increased with maternal length, while those of eicosapentaenoic acid (20:5(n-3), EPA) declined. In Lake Nipissing, maternal age had similar effects on AA and EPA, but not DHA. The Lake Winnipeg population did not conform to the trends of the other two populations, and ova from this population had very low levels of AA. We hypothesize that there are similar selection pressures on the Lake Ontario and Lake Nipissing populations with respect to desirable ova fatty acid profiles. Lake Winnipeg walleye may experience different selection pressures or may be unable to conform to the trends observed in the other two lakes.

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9

Hauptfleisch, Ulf, and Árni Einarsson. "Age of the Younger Laxá Lava and Lake Mývatn, Northern Iceland, Determined by AMS Radiocarbon Dating." Radiocarbon 54, no. 2 (2012): 155–64. http://dx.doi.org/10.2458/azu_js_rc.v54i2.15970.

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Lake Mývatn and several smaller lakes in northern Iceland were formed by the large Holocene lava flow of the Younger Laxá Lava (YLL). The age of the YLL was estimated by tephrochronology at 1800–2300 BP (Thorarinsson 1951). Conventional radiocarbon dating of charred vegetation beneath the YLL (Thorarinsson 1964) yielded uncalibrated ages of 1940 ± 270 14C yr BP (Yale), 2110 ± 140 14C yr BP (Copenhagen), and 1990 ± 50 14C yr BP (Winnipeg). Ongoing palcolimnological research at Lake Mývatn requires a more precise age estimation of the YLL. Charcoal samples from beneath the YLL were collected at Presthvammur in 2007 and analyzed by accelerator mass spectrometry (AMS) 14C measurements. The reliability of the conventional 14C ages of the samples Yale, Copenhagen, and Winnipeg was re-evaluated, applying criteria from Pettit et al. (2003) and Graf (2009). The result of AMS 14C measurement (2170 ± 38 cal yr BP) underpins the local tephrochronology and provides a reliable age of the YLL and Lake Mývatn.

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Hauptfleisch, Ulf, and Árni Einarsson. "Age of the Younger Laxá Lava and Lake Mývatn, Northern Iceland, Determined by AMS Radiocarbon Dating." Radiocarbon 54, no. 02 (2012): 155–64. http://dx.doi.org/10.1017/s0033822200046890.

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Lake Mývatn and several smaller lakes in northern Iceland were formed by the large Holocene lava flow of the Younger Laxá Lava (YLL). The age of the YLL was estimated by tephrochronology at 1800–2300 BP (Thorarinsson 1951). Conventional radiocarbon dating of charred vegetation beneath the YLL (Thorarinsson 1964) yielded uncalibrated ages of 1940 ± 27014C yr BP (Yale), 2110 ± 14014C yr BP (Copenhagen), and 1990 ± 5014C yr BP (Winnipeg). Ongoing palcolimnological research at Lake Mývatn requires a more precise age estimation of the YLL. Charcoal samples from beneath the YLL were collected at Presthvammur in 2007 and analyzed by accelerator mass spectrometry (AMS)14C measurements. The reliability of the conventional14C ages of the samples Yale, Copenhagen, and Winnipeg was re-evaluated, applying criteria from Pettit et al. (2003) and Graf (2009). The result of AMS14C measurement (2170 ± 38 cal yr BP) underpins the local tephrochronology and provides a reliable age of the YLL and Lake Mývatn.

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Dissertations / Theses on the topic "Lake Winnipeg"

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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2

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.

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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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Books on the topic "Lake Winnipeg"

1

Beautiful Lake Winnipeg. Blizzard Pub., 1990.

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Mistehay Sakahegan, the Great Lake: The beauty and the treachery of Lake Winnipeg. Heartland, 2000.

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3

Nielsen, E. Sedimentology and geomorphic evolution of the south shore of Lake Winnipeg. Manitoba Energy and Mines, Geological Services, 1994.

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4

Panton, J. Hoyes. Notes on the geology of some islands in Lake Winnipeg. s.n.], 1986.

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Panton, J. Hoyes. Notes on the geology of some islands in Lake Winnipeg. s.n.], 1986.

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Lysack, W. Towards a predictive capability for management of the Lake Winnipeg Fishery. Manitoba Natural Resources, Fisheries, 1987.

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Low, A. P. Preliminary report on an exploration of country between Lake Winnipeg and Hudson Bay. Dawson Bros., 1993.

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Sabina, Ann P. Roches et minéraux du collectionneur: De Sudbury à Winnipeg. Commission géologique du Canada, 1991.

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Fauche, Gaspard Adolphe. Account of the transactions at Fort William, on Lake Superior, in August 1816. s.n., 1986.

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Armstrong, Nicole. Water quality assessment of the Red River and Lake Winnipeg following release of raw sewage from the City of Winnipeg, September 2002. Manitoba Conservation, 2002.

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Book chapters on the topic "Lake Winnipeg"

1

Wong, Isaac, William G. Booty, Phil Fong, and Sarah Hall. "Development of an Information Portal for the Lake Winnipeg Basin Initiative." In IFIP Advances in Information and Communication Technology. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22285-6_72.

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Johnson, Derek, and Sölmundur Karl Pálsson. "Governability and Its Discontents in the Fishery of Lake Winnipeg Since the Late 1960s: The View from Gimli." In MARE Publication Series. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17034-3_15.

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Biziouras, Nick, and Beverly Crawford. "The Fast Lane to Asia: European Auto Firms in China." In Winning In Asia, European Style. Palgrave Macmillan US, 2001. http://dx.doi.org/10.1057/9780230107229_6.

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"Lake Winnipeg Journals, 1818–1819:." In Friends, Foes, and Furs. MQUP, 2019. http://dx.doi.org/10.2307/j.ctvt6rn1w.14.

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"Historical Changes in Large River Fish Assemblages of the Americas." In Historical Changes in Large River Fish Assemblages of the Americas, edited by Luther P. Aadland, Todd M. Koel, William G. Franzin, Kenneth W. Stewart, and Patrick Nelson. American Fisheries Society, 2005. http://dx.doi.org/10.47886/9781888569728.ch16.

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<em>Abstract.</em>—The Red River of the North basin (RRNB) has an area of about 287,000 square kilometers of the upper Midwestern United States and south-central Canada. The river forms the North Dakota–Minnesota boundary and flows into Lake Winnipeg, Manitoba, and then, via the Nelson River, into Hudson Bay. While the Red River main stem remains a sinuous stream similar to early descriptions, the river’s watershed has been altered dramatically by intensive agriculture, wetland drainage, channelization of tributary streams, and dam construction. Early land surveys described a landscape largely covered by prairie and wetlands. However, thousands of kilometers of ditches have been excavated to drain wetlands for agriculture in the United States in the late 1800s to the 1920s, and continuing, in Canada, to the present. Over 500 dams have blocked access to critical spawning habitat in the basin starting in the late 1800s. Also, during the mid-1900s, many of the tributaries were channelized, causing the loss of several thousand stream kilometers. While much of RRNB’s fish assemblage remains similar to earliest historical records, the loss of the lake sturgeon <em>Acipenser fulvescens </em>is a notable change resulting from habitat loss and fragmentation, and overfishing. Additional localized extirpations of channel catfish <em>Ictalurus punctatus</em>, several redhorse <em>Moxostoma </em>species, sauger <em>Sander canadensis</em>, and other migratory fishes have occurred upstream of dams on several tributaries. Presently, efforts are underway to restore migratory pathways through dam removal, conversion of dams to rapids, and construction of nature-like fishways. Concurrently, lake sturgeon is being reintroduced in the hope that restored access to historic spawning areas will allow reestablishment of the species. Proposed construction of new flood control dams may undermine these efforts.

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"Historical Changes in Large River Fish Assemblages of the Americas." In Historical Changes in Large River Fish Assemblages of the Americas, edited by Luther P. Aadland, Todd M. Koel, William G. Franzin, Kenneth W. Stewart, and Patrick Nelson. American Fisheries Society, 2005. http://dx.doi.org/10.47886/9781888569728.ch16.

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<em>Abstract.</em>—The Red River of the North basin (RRNB) has an area of about 287,000 square kilometers of the upper Midwestern United States and south-central Canada. The river forms the North Dakota–Minnesota boundary and flows into Lake Winnipeg, Manitoba, and then, via the Nelson River, into Hudson Bay. While the Red River main stem remains a sinuous stream similar to early descriptions, the river’s watershed has been altered dramatically by intensive agriculture, wetland drainage, channelization of tributary streams, and dam construction. Early land surveys described a landscape largely covered by prairie and wetlands. However, thousands of kilometers of ditches have been excavated to drain wetlands for agriculture in the United States in the late 1800s to the 1920s, and continuing, in Canada, to the present. Over 500 dams have blocked access to critical spawning habitat in the basin starting in the late 1800s. Also, during the mid-1900s, many of the tributaries were channelized, causing the loss of several thousand stream kilometers. While much of RRNB’s fish assemblage remains similar to earliest historical records, the loss of the lake sturgeon <em>Acipenser fulvescens </em>is a notable change resulting from habitat loss and fragmentation, and overfishing. Additional localized extirpations of channel catfish <em>Ictalurus punctatus</em>, several redhorse <em>Moxostoma </em>species, sauger <em>Sander canadensis</em>, and other migratory fishes have occurred upstream of dams on several tributaries. Presently, efforts are underway to restore migratory pathways through dam removal, conversion of dams to rapids, and construction of nature-like fishways. Concurrently, lake sturgeon is being reintroduced in the hope that restored access to historic spawning areas will allow reestablishment of the species. Proposed construction of new flood control dams may undermine these efforts.

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Barker, Graeme. "Weed, Tuber, and Maize Farming in the Americas." In The Agricultural Revolution in Prehistory. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780199281091.003.0012.

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The American continent extends over 12,000 kilometres from Alaska to Cape Horn, and encompasses an enormous variety of environments from arctic to tropical. For the purposes of this discussion, such a huge variety has to be simplified into a few major geographical units within the three regions of North, Central, and South America (Fig. 7.1). Large tracts of Alaska and modern Canada north of the 58th parallel consist of tundra, which extends further south down the eastern coast of Labrador. To the south, boreal coniferous forests stretch eastwards from Lake Winnipeg and the Red River past the Great Lakes to the Atlantic, and westwards from the slopes of the Rockies to the Pacific. The vast prairies in between extend southwards through the central United States between the Mississippi valley and the Rockies, becoming less forested and more open as aridity increases further south. South of the Great Lakes the Appalachian mountains dominate the eastern United States, making a temperate landscape of parallel ranges and fertile valleys, with sub-tropical environments developing in the south-east. The two together are commonly referred to as the ‘eastern Woodlands’ in the archaeological literature. On the Pacific side are more mountain ranges such as the Sierra Nevada, separated from the Rockies by arid basins including the infamous Death Valley. These drylands extend southwards into the northern part of Central America, to what is now northern Mexico, a region of pronounced winter and summer seasonality in temperature, with dryland geology and geomorphology and xerophytic vegetation. The highlands of Central America, from Mexico to Nicaragua, are cool tropical environments with mixed deciduous and coniferous forests. The latter develop into oak-laurel-myrtle rainforest further south in Costa Rica and Panama. The lowlands on either side sustain a variety of tropical vegetation adapted to high temperatures and frost-free climates, including rainforest, deciduous woodland, savannah, and scrub. South America can be divided into a number of major environmental zones (Pearsall, 1992). The first is the Pacific littoral, which changes dramatically from tropical forest in Colombia and Ecuador to desert from northern Peru to central Chile. This coastal plain is transected by rivers flowing from the Andes, and in places patches of seasonal vegetation (lomas) are able to survive in rainless desert sustained by sea fog.

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Brazinsky, Gregg A. "Competition and Cooperation, 1968–1979." In Winning the Third World. University of North Carolina Press, 2017. http://dx.doi.org/10.5149/northcarolina/9781469631707.003.0011.

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This chapter traces the evolution of Sino-American competition in the Third World during the era of détente. Although some forms of competition between Beijing and Washington in the Third World persisted, the changing relationship also made it possible for limited forms of cooperation to occur. By the late 1970s, tentative forms of cooperation that occurred during the Nixon and Ford administrations evolved into more extensive collaboration in Afghanistan and elsewhere.

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McKenna, A. T. "Selling Up and Winning Trophies." In Showman of the Screen. University Press of Kentucky, 2016. http://dx.doi.org/10.5810/kentucky/9780813168715.003.0012.

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This chapter analyzes the circumstances of Levine’s sale of his company, Embassy, to the Avco Corporation in 1968. Because of various interrelated factors, corporations were looking to take over film companies in the mid- to late 1960s, and Levine stood to benefit greatly. Embassy was privately owned, had a huge library of films that were attractive to television, was not burdened by real estate or equipment, and had just had a huge success with The Graduate. Levine turned all of these positive points to his advantage and sold Embassy to Avco for an astonishing $40 million in the bubble created by the corporate feeding frenzy. This chapter also investigates two of Levine’s productions from this time, The Producers and The Lion in Winter, both of which stand as examples of Levine’s continued willingness to take risks.

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Clark, Elizabeth A. "Pagans and Christians in Late Ancient Rome." In Melania the Younger. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780190888220.003.0004.

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Chapter 4 explores the meaning of “pagan” in late antiquity, debates over its use today, and the meaning and progress of Christianization. Recent controversies over “conversion” and the pace of Christianization, especially among the senatorial aristocracy, have called into question mid-twentieth-century claims that there was an ardent “pagan revival” among aristocrats at the end of the fourth century. Some key elements in that controversy involved the removal of the altar of the goddess Victory from the senate house and the fate of the Vestal Virgins. The chapter details later imperial rulings against pagan practices from the 390s onward. Recent scholarship questions whether conversion to Christianity entailed a radical life change for upper-class Romans. The growth of the number and role of bishops is noted. Christianity’s charity operations were probably a factor in winning some to the new faith. Soon, “heresy” would become a more pressing concern to bishops and some emperors than the occasional “pagan” practitioner.

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Conference papers on the topic "Lake Winnipeg"

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"A two-way calibration of the SWAT and OneLay/PolTra models using integrated modelling approach for the Lake Winnipeg Basin." In 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand (MSSANZ), Inc., 2011. http://dx.doi.org/10.36334/modsim.2011.e12.booty.

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Isherwood, Andy, Alan Samcheck, and Wayne Savigny. "Deformation Analysis of a Pipeline River Crossing." In 2002 4th International Pipeline Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ipc2002-27343.

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In Manitoba, the Main (100) Line operated by TransCanada PipeLines Ltd. (TCPL) comprises six natural gas pipelines ranging from 864 mm to 1219 mm in diameter. These pipelines cross the La Salle River at Main Line Valve (MLV) 39+6.06, approximately 3 km south of St. Norbert, Manitoba. A rupture in Line 100-2 occurred at this crossing site on April 15, 1996. Investigations of the site following the line break concluded that ground movement associated with the east approach slope was likely a contributing factor in the failure of Line 100-2. It was postulated that the observed slope instability was attributable, at least in part, to a combination of the low shear strength of Lake Agassiz clay and artesian pore pressures associated with the underlying regional Upper Carbonate Aquifer (UCA), controlled in part by groundwater pumping within the City of Winnipeg. Based on the findings from the initial slope stability analyses, a more detailed deformation analysis was proposed to examine the influence of hydrogeological conditions on deformation and slope stability at the La Salle site. The numerical analyses were conducted using FLAC2D, a two-dimensional explicit finite difference code for engineering mechanics computation. The code simulates the pre- and post-peak behaviour of geological and other materials based on specified material properties, constitutive models, and failure criteria. The deformation analysis has identified the key factors controlling stability of the east approach slope at the La Salle site, and has provided insight into probable failure mechanisms. High pressures in the UCA increase the risk of sudden large-scale slope failure at the slope toe at critical times during the year, e.g., after rapid drawdown following the spring flood, and following the drop in river level in late fall to winter levels. The analysis indicated that the risk of slope instability at this site can be reduced by lowering the aquifer pressure locally in the vicinity of the east approach slope at critical times in the year. The results of the study have demonstrated the usefulness of employing deformation analysis as a means of understanding the key factors controlling slope stability at a particular site. The approach is also compatible with the development of a comprehensive soil/pipe interaction methodology that integrates the results of ongoing in situ monitoring into pipe stress analyses.

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Knoll, D. W. "ATRs: The Winning Edge." In 1988 Los Angeles Symposium--O-E/LASE '88, edited by H. M. C. Liaw. SPIE, 1988. http://dx.doi.org/10.1117/12.944285.

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Koroll, G. W., M. A. Ryz, J. W. Harding, W. R. Ridgway, M. J. Rhodes, and R. H. McCamis. "Decommissioning AECL Whiteshell Laboratories." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4955.

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AECL operates two nuclear R&D laboratories in Canada, Chalk River Laboratories (CRL) near Ottawa, Ontario, and Whiteshell Laboratories (WL), near Winnipeg, Manitoba. Whiteshell Laboratories have been in operation since about 1965. R&D programs carried out at WL included the WR-1 research reactor, which operated from 1965 to 1985, reactor safety research, small reactor development, materials science, post irradiation examination, chemistry, biophysics and radiation applications. The Canadian Nuclear Fuel Waste Management Program was conducted and continues to operate at WL and also at the nearby Underground Research Laboratory. In the late-1990s, AECL began to consolidate research and development activities at CRL and initiated preparations for decommissioning WL. Preparations for decommissioning included a formal environmental assessment under Canadian environmental assessment legislation, a prerequisite to AECL’s application for a decommissioning licence. In 2002 December, the Canadian Nuclear Safety Commission issued a decommissioning licence for WL, valid until December 31, 2008. The licence authorizes the first planned phase of site decommissioning as well as the continuation of selected research programs. The six-year licence for Whiteshell Laboratories is the first overall decommissioning license issued for a Canadian Nuclear Research and Test Establishment and is the longest licence term ever granted for a nuclear installation of this complexity in Canada. The first phase of decommissioning is now underway and focuses on decontamination and modifications to nuclear facilities, such as the shielded facilities, the main R&D laboratories and the associated service systems, to achieve a safe state of storage-with-surveillance. Later phases have planned waste management improvements for selected wastes already in storage, eventually followed by final decommissioning of facilities and infrastructure and removal of most wastes from the site. This paper provides an overview of the planning, environmental assessment, licensing, and organizational processes for decommissioning and selected descriptions of decommissioning activities currently underway at AECL Whiteshell Laboratories.

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Koroll, Grant W., Dennis M. Bilinsky, Randall S. Swartz, Jeff W. Harding, Michael J. Rhodes, and Randall W. Ridgway. "Decommissioning of AECL Whiteshell Laboratories." In ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16311.

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Whiteshell Laboratories (WL) is a Nuclear Research and Test Establishment near Winnipeg, Canada, operated by AECL since the early 1960s and now under decommissioning. WL occupies approximately 4400 hectares of land and employed more than 1000 staff up to the late-1990s, when the closure decision was made. Nuclear facilities at WL included a research reactor, hot cell facilities and radiochemical laboratories. Programs carried out at the WL site included high level nuclear fuel waste management research, reactor safety research, nuclear materials research, accelerator technology, biophysics, and industrial radiation applications. In preparation for decommissioning, a comprehensive environmental assessment was successfully completed [1] and the Canadian Nuclear Safety Commission issued a six-year decommissioning licence for WL starting in 2003 — the first decommissioning licence issued for a Nuclear Research and Test Establishment in Canada. This paper describes the progress in this first six-year licence period. A significant development in 2006 was the establishment of the Nuclear Legacy Liabilities Program (NLLP), by the Government of Canada, to safely and cost effectively reduce, and eventually eliminate the nuclear legacy liabilities and associated risks, using sound waste management and environmental principles. The NLLP endorsed an accelerated approach to WL Decommissioning, which meant advancing the full decommissioning of buildings and facilities that had originally been planned to be decontaminated and prepared for storage-with-surveillance. As well the NLLP endorsed the construction of enabling facilities — facilities that employ modern waste handling and storage technology on a scale needed for full decommissioning of the large radiochemical laboratories and other nuclear facilities. The decommissioning work and the design and construction of enabling facilities are fully underway. Several redundant non-nuclear buildings have been removed and redundant nuclear facilities are being decontaminated and prepared for demolition. Along with decommissioning of redundant structures, site utilities are being decommissioned and reconfigured to reduce site operating costs. New waste handling and waste clearance facilities have been commissioned and a large shielded modular above ground storage (SMAGS) structure is in final design in preparation for construction in 2010. The eventual goal is full decommissioning of all facilities and infrastructure and removal of stored wastes from the site.

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Reports on the topic "Lake Winnipeg"

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Rusina, Tamara. Lake Winnipeg. Edited by Nikolay Komedchikov. Entsiklopediya, 2012. http://dx.doi.org/10.15356/dm2015-12-02-13.

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Todd, B. J., D. L. Forbes, C. F. M. Lewis, G. L. D. Matile, E. Nielsen, and L. H. Thorleifson. Geology of Lake Winnipeg: highlights of the Lake Winnipeg Project 1994-1996. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/209399.

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Todd, B. J., and C. F. M. Lewis. Seismostratigraphy of Lake Winnipeg sediments. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207504.

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Henderson, P. J. Geochemistry of Lake Winnipeg sediments. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207512.

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Vance, R. E. Paleobotany of Lake Winnipeg sediments. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207519.

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Cobb, D. G. Benthic Invertebrates of Lake Winnipeg. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207522.

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Henderson, P. J. Geochemistry of Lake Winnipeg sediments. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207532.

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Rodriques, C. G. Ostracode stratigraphy of Lake Winnipeg sediments. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207516.

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Burbidge, S. M., and C. J. Schröder-Adams. Thecamoebian stratigraphy of Lake Winnipeg sediments. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207517.

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Fisher-Smith, G., and K. Friesen. Sampling polychlorinated biphenyls in Lake Winnipeg. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207520.

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