spatial and temporal trends of contaminants in canadian arctic freshwater and terrestrial ecosystems: a review.the state of knowledge of contaminants in canadian arctic biota of the freshwater and terrestrial ecosystems has advanced enormously since the publication of the first major reviews by lockhart et al. and thomas et al. in the science of the total environment in 1992. the most significant gains are new knowledge of spatial trends of organochlorines and heavy metal contaminants in terrestrial animals, such as caribou and mink, and in waterfowl, where no information was previously available. spatia ...199910466229
investigations of mercury concentrations in walleye and other fish in the athabasca river ecosystem with increasing oil sands developments.recent studies have reported an increasing trend of mercury concentrations in walleye (sander vitreus) from the athabasca river, north eastern alberta (canada); these studies were based on three years of comparison and attributed the mercury increase to expanding oil sands developments in the region. in order to conduct a more comprehensive analysis of mercury trends in fish, we compiled an extensive database for walleye, lake whitefish (coregonus clupeaformis), northern pike (esox lucius) and l ...201222652822
associations between omega-3 fatty acids, selenium content, and mercury levels in wild-harvested fish from the dehcho region, northwest territories, better understand the risks and benefits of eating wild-harvested fish from the northwest territories, canada, levels of total mercury (hgt) and selenium (se) and composition of omega-3 fatty acid (n-3 fa) were measured in muscle tissue of fish harvested from lakes in the dehcho region, northwest territories, canada. average hgt levels ranged from 0.057 mg/kg (cisco) to 0.551 mg/kg (northern pike), while average n-3 fa concentrations ranged from 101 mg/100 g (burbot) to 1,689 mg/100 g (lake t ...201727905863
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