28 dossier(s) trouvé(s) portant l’étiquette "bioaccumulation" (les projets pluriannuels sont regroupés):
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Assessment of Dietary Benefit: Risk in Inuit Communities
chercheur principal: Kuhnlein, Harriet V
Année(s) de permis: 1998
Résumé: The objectives of this study are therefore: 1) derive quantitative estimates of traditional and market food among Inuit; 2) complete databases of nutrient and contaminant contents of traditional food; define benefits of traditional food in terms of nutritional, socioeconomic and cultural significance; define the levels of exposure to contaminants (heavy metals and organochlorines). In each commun...


Studies on the past, present and future ecological impact on Canadian northern boreal forest and arctic ecosystems due to mining activities, shown at the Great Slave Lake area, Northwest Territories, Canada
chercheur principal: Steinecke, Karin
Année(s) de permis: 1998 1997
Résumé: The project will focus on understanding, analyzing and evaluating the reactions of the northern boreal forest ecosystems in the Great Slave Lake region due to man made stress of mining, settlement and connecting activities. The project will try to develop some general conclusions, statements and model systems. The research team (2 persons) will come from Europe to Yellowknife by plane. The base wi...


Chemical Investigation of Marine Invertebrates from Husky Lakes
chercheur principal: Carolsfeld, Joachim
Année(s) de permis: 1996
Résumé: The researchers propose to collect invertebrates, algae and microorganisms with the use of SCUBA, plankton nets, bottom dredges, and intertidal collection. These samples will be sorted and frozen for later analysis in Halifax. The researchers wish to collect samples in about 25 sites, ranging from the southern tip of Liverpool Bay to south of Saunatuk. All collections will take place from small...


Food and habitat use among fishes of the Slave River, NWT.
chercheur principal: Little, Alison
Année(s) de permis: 1995
Résumé: The researchers will sample the fishes in three areas (below the rapids at Fort Smith, at the mouth of the Salt River, and in the delta) throughout the open-water season to monitor broad patterns of habitat distribution of the different species and different sizes/ ages of each species. Fish will be collected by use of multi-mesh gill nets, set lines and seines. Fish measurements, aging structu...


Productivity of Marine Mammal Food Chains in the Northwest Passage
chercheur principal: Welch, Harold
Année(s) de permis: 1993 1992 1991 1990 1988 1987
Résumé: The researcher and his team will continue their marine research at Resolute. They will continue their work on the trophic dynamics of the arctic marine food chain as it pertains to marine mammal and seabird production. The main goal is to obtain data on seasonal cycles of energy flow. The team will also be examining organochlorine and heavy metal contaminants in the marine system....


A Study of Polonium 210 and Lead 210 in Food Chains, Lichen-Caribou-Man and Lichen-Caribou-Wolf in Northern Saskatchewan and the Northwest Territories
chercheur principal: Thomas, Patricia
Année(s) de permis: 1991
Résumé: The study will compare two arctic food chains, namely, lichen-caribou- wolf and lichen-caribou-human to investigate the accumulation and transfer of Polonium-210 and Lead-210. Background levels of radiation will be measured by collecting samples of lichen, caribou, wolf and human placenta....


Assessment of Metal Levels in Fish Tissue from Lupin Project Area 1990
chercheur principal: Harbicht, Stephen
Année(s) de permis: 1990
Résumé: The Researcher and his team using gill nets will sample lake trout to determine the level of heavy metals in order to evaluate the bioaccumulation that has occurred....


Licence #2428
chercheur principal: Gunn, Anne
Année(s) de permis: 1979
Résumé: The purpose of the study is to determine heavy metal occurrence at various levels in the food chain....


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