Research Topics
| J M BlaisSummaryAffiliation: University of Ottawa Country: Canada Publications
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Detail Information
Publications
Melting glaciers: a major source of persistent organochlorines to subalpine Bow Lake in Banff National Park, CanadaJ M Blais
University of Ottawa, 30 Marie Curie Rd, Ottawa, Ontario, Canada, KIN 6N5
Ambio 30:410-5. 2001..Organochlorines from glacial streams were largely in dissolved form because the organic-poor glacial clays had a limited sorption capacity for the more hydrophobic chemicals...- Biologically mediated transport of contaminants to aquatic systemsJules M Blais
Program for Chemical and Environmental Toxicology, Department of Biology, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
Environ Sci Technol 41:1075-84. 2007..We conclude that biovector transport should not be neglected when considering environmental risks of biomagnifying contaminants... - Assessment and characterization of polychlorinated biphenyls near a hazardous waste incinerator: analysis of vegetation, snow, and sedimentsJules M Blais
Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
Environ Toxicol Chem 22:126-33. 2003.... - Mercury, polybrominated diphenyl ether, organochlorine pesticide, and polychlorinated biphenyl concentrations in fish from lakes along an elevation transect in the French PyrénéesJules M Blais
Department of Biology, University of Ottawa, 30 Marie Curie, Ottawa, Ont, Canada K1N 6N5
Ecotoxicol Environ Saf 63:91-9. 2006..This implies that the delivery and/or retention of many of these contaminants increase with lake elevation... - Concentrations of organochlorine pesticides and polychlorinated biphenyls in amphipods (Gammarus lacustris) along an elevation gradient in mountain lakes of western CanadaJules M Blais
Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada
Environ Toxicol Chem 22:2605-13. 2003..Because Gammarus is an important trophic link in aquatic foodwebs in these environments, enhanced concentrations of toxicants in prey may increase their biomagnification in top predators of high-altitude lakes... - Arctic seabirds transport marine-derived contaminantsJules M Blais
Centre for Advanced Research in Environmental Genomics, Department of Biology, University of Ottawa, Ottawa, Ontario, K1N 6N5 Canada
Science 309:445. 2005..Bird guano greatly stimulates biological productivity in these extreme environments but also serves as a major source of industrial and agricultural pollutants in these remote ecosystems... 
A soil ingestion pilot study of a population following a traditional lifestyle typical of rural or wilderness areasJ R Doyle
Chemical and Environmental Toxicology Program, University of Ottawa, Ottawa, Canada
Sci Total Environ 424:110-20. 2012..However, the estimates are lower than the earlier qualitative assessments of subsistence lifestyles...- Organochlorine pesticide and polychlorinated biphenyl concentrations in snow, snowmelt, and runoff at Bow Lake, AlbertaMelissa J Lafrenière
Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Canada
Environ Sci Technol 40:4909-15. 2006..The results indicate that the extent of glacial ice melt may be more important than mean snowpack burdens as a control on OC concentrations in runoff in glacial catchments... - Historical analysis of salmon-derived polychlorinated biphenyls (PCBs) in lake sedimentsEva M Krümmel
Inuit Circumpolar Council ICC, Canada Office, 75 Albert St, Suite 1001, Ottawa, Ontario, Canada K1P 5E7
Sci Total Environ 407:1977-89. 2009.... - Orographic cold-trapping of persistent organic pollutants by vegetation in mountains of western CanadaDeborah A Davidson
Program for Chemical and Environmental Toxicology, Department of Biology, University of Ottawa, P O Box 450, Station A, Ottawa, Ontario, Canada K1N 6N5
Environ Sci Technol 37:209-15. 2003..Results from this study demonstrate that alpine ecosystems accumulate these chemicals to the same degree that is observed in polar environments that are known to receive contaminants by long-range transport... - Dichlorodiphenyltrichloroethane in the aquatic ecosystem of the Okavango Delta, Botswana, South AfricaBontle Mbongwe
Department of Biology, University of Ottawa, 30 Marie Curie Road, Ottawa, Ontario K1N 6N5, Canada
Environ Toxicol Chem 22:7-19. 2003.... - Air-water gas exchange of chlorinated pesticides in four lakes spanning a 1,205 meter elevation range in the Canadian Rocky MountainsAndrew C Wilkinson
Program for Chemical and Environmental Toxicology, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
Environ Toxicol Chem 24:61-9. 2005..In general, losses of pesticides by outflow were greater than the amount exchanged across the air-water interface in these lakes... 
Seabird-driven shifts in Arctic pond ecosystemsNeal Michelutti
Paleoecological Environmental Assessment and Research Laboratory PEARL, Department of Biology, Queen s University, Kingston, Ontario, Canada K7L 3N6
Proc Biol Sci 276:591-6. 2009..Our findings suggest that climate-related shifts in global seabird populations will have the unexpected consequence of restructuring coastal ecosystems...- Aquatic ecology: delivery of pollutants by spawning salmonE M Krümmel
Department of Biology, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
Nature 425:255-6. 2003 - An isotopic investigation of mercury accumulation in terrestrial food webs adjacent to an Arctic seabird colonyEmily S Choy
Program for Chemical and Environmental Toxicology, Department of Biology, University of Ottawa, Ottawa, ON, Canada
Sci Total Environ 408:1858-67. 2010.... - Contamination of an arctic terrestrial food web with marine-derived persistent organic pollutants transported by breeding seabirdsEmily S Choy
Department of Biology, University of Ottawa, ON, Canada
Environ Pollut 158:3431-8. 2010..Our study provides novel contaminant data for these species and supports biovector transport as a source of organic contaminants to certain components of the terrestrial food web... - Modeling atmospheric vegetation uptake of PBDEs using field measurementsAnnick D St Amand
Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5
Environ Sci Technol 41:4234-9. 2007..This study provides the necessary background for modeling PBDE transport between air and coniferous vegetation globally... - Organochlorine compounds in trout from lakes over a 1600 meter elevation gradient in the Canadian Rocky MountainsMarc J Demers
Centre for Advanced Research in Environmental Genomics, Department of Biology, University of Ottawa, 30 Marie Curie, Ottawa, Ontario, KIN 6N5, Canada
Environ Sci Technol 41:2723-9. 2007..Using principal component analysis (PCA), we identified the importance of lake elevation and octanol/water partition coefficient (K(ow)) to the OC composition of trout... - Air-vegetation partitioning of polychlorinated biphenyls near a point sourceClement Poon
Department of Chemistry, University of Ottawa, Ontario, Canada
Environ Toxicol Chem 24:3153-8. 2005..Multivariate principal components analysis showed that PCB composition in vegetation near the emission source most closely resembled the Aroclor mixtures processed by the treatment facility... - Concentrations and fluxes of salmon-derived polychlorinated biphenyls (PCBs) in lake sedimentsEva M Krümmel
Department of Biology, University of Ottawa, 150 Louis Pasteur, Ottawa, Ontario KIN 6N5, Canada
Environ Sci Technol 39:7020-6. 2005..Unlike temperate Great Lakes contaminant studies, the North American west-coast lakes dominated by salmon bio-transport showed no sign of recent decrease in PCBs... - Persistent organic pollutants in air and vegetation from the Canadian Rocky MountainsDeborah A Davidson
Program for Chemical and Environmental Toxicology, Department of Biology, University of Ottawa, P O Box 450, Station A, Ottawa, Ontario KIN 6N5, Canada
Environ Toxicol Chem 23:540-9. 2004..Based on these observations, we show that both deposition at higher altitudes and long-range atmospheric transport influence chemical accumulation in vegetation from the Canadian Rocky Mountains... - Mercury transport between sediments and the overlying water of the St. Lawrence River area of concern near Cornwall, OntarioTania M Delongchamp
Department of Biology, University of Ottawa, 150 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada
Environ Pollut 158:1487-93. 2010.... - Polychlorinated biphenyls (PCBs) contamination and aryl hydrocarbon receptor (AhR) agonist activity of Omega-3 polyunsaturated fatty acid supplements: implications for daily intake of dioxins and PCBsJ A Bourdon
Mechanistic Studies Division, Environmental Health Sciences and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, ON, Canada
Food Chem Toxicol 48:3093-7. 2010..Further research will be necessary to draw firm conclusions... - Mercury empirical relationships in sediments from three Ontario lakesA L M Ethier
Biology Department, Faculty of Science, University of Ottawa, P O Box 450, Stn A, Ottawa, ON, Canada
Sci Total Environ 408:2087-95. 2010..009 TOC (%)+0.001 Eh (mV)-1.902, p=0.026]; whereas THg was positively correlated with TOC [log THg (ppb)=0.026 TOC (%)+1.400, p<0.0001]... - Preliminary assessment of avian stomach oils: a vector of contaminants to chicks and potential for diet analysis and biomonitoringKaren L Foster
Program for Chemical and Environmental Toxicology, Department of Biology, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
Environ Sci Technol 44:6869-74. 2010.... - A survey of the traditional food consumption that may contribute to enhanced soil ingestion in a Canadian First Nation communityJ R Doyle
Chemical and Environmental Toxicology Program, University of Ottawa, Ottawa, Canada
Sci Total Environ 424:104-9. 2012.... - A pilot study to assess the feasibility of using naturally-occurring radionuclides as mass balance tracers to estimate soil ingestionJ R Doyle
Chemical and Environmental Toxicology Program, University of Ottawa, Ottawa, Ontario, Canada
Ecotoxicol Environ Saf 83:34-40. 2012.... - Polychlorinated dibenzo-p-dioxin, polychlorinated dibenzofuran, and polychlorinated biphenyl accumulation in white-tailed deer (Odocoileus virginianus) near a magnesium smelter in Quebec, CanadaCecilia Tolley
Department of Biology, University of Ottawa, Ontario, Canada
Environ Toxicol Chem 26:2650-9. 2007.... - Temporal analysis of net fluvial methylmercury loading in a dystrophic and a clear water lakeR Brad Mills
Chemical and Environmental Toxicology, Department of Biology, University of Ottawa, 30 Marie Curie Street, Ottawa, Ontario, Canada K1N 6N5
Sci Total Environ 407:4696-702. 2009..Seasonal patterns of MeHg(Net) in the oligotrophic lake lagged behind the dystrophic lake by 39 days. The short term variation in MeHg(Net) was dominated by precipitation (t=2.73, p=0.008; dystrophic, t=2.53, p=0.017; oligotrophic)... - Mass balance soil ingestion estimating methods and their application to inhabitants of rural and wilderness areas: a critical reviewJames R Doyle
Chemical and Environmental Toxicology Program, University of Ottawa, Ottawa, Canada
Sci Total Environ 408:2181-8. 2010..Given the typically small populations in these areas, future soil ingestion studies should be focused on specific activities with a high potential for soil ingestion... - Bioaccumulation of the pharmaceutical 17alpha-ethinylestradiol in shorthead redhorse suckers (Moxostoma macrolepidotum) from the St. Clair River, CanadaAhmed M Al-Ansari
University of Ottawa, Department of Biology, Chemical and Environmental Toxicology, Ottawa, Ontario K1N 6N5, Canada
Environ Pollut 158:2566-71. 2010..512, p<0.01, n=10). Lipid normalized EE2 concentrations were correlated with delta(15)N (R(2)=0.436, p<0.05, n=10), suggesting higher EE2 exposures in carnivores. Our data support the hypothesis of EE2 bioaccumulation in wild fish... - Sediment mercury dynamics and historical trends of mercury deposition in the St. Lawrence River area of concern near Cornwall, Ontario, CanadaTania M Delongchamp
Department of Biology, University of Ottawa, 150 Louis Pasteur, Ottawa, Ontario, Canada
Sci Total Environ 407:4095-104. 2009..Methyl mercury showed surface enrichment in most of these sediment cores providing evidence that mercury methylation occurred most rapidly near the sediment surface... - Tracing salmon-derived nutrients and contaminants in freshwater food webs across a pronounced spawner density gradientIrene Gregory-Eaves
Department of Biology, McGill University, 1205 Docteur Penfield, Montreal, Quebec, H3A 1B1, Canada
Environ Toxicol Chem 26:1100-8. 2007..These data suggest that the anadromous salmon nutrient and contaminant pathways are related and significantly impact the contaminant burden of resident fish... - Prediction of SVOC vegetation and atmospheric concentrations using calculated deposition velocitiesAnnick D St-Amand
Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada
Environ Int 35:851-5. 2009.... - Sex- and tissue-specific effects of waterborne estrogen on estrogen receptor subtypes and E2-mediated gene expression in the reproductive axis of goldfishVicki L Marlatt
Centre for Advanced Research in Environmental Genomics, Department of Biology, University of Ottawa, Ottawa, ON, Canada
Comp Biochem Physiol A Mol Integr Physiol 156:92-101. 2010..These studies reveal a more complicated action of estrogenic compounds that has important implications on estrogenic endocrine disruptors in teleosts... - Prehistoric Inuit whalers affected Arctic freshwater ecosystemsMarianne S V Douglas
Paleoenvironmental Assessment Laboratory, Department of Geology, University of Toronto, 22 Russell Street, Toronto, Ontario, Canada M5S 3B1
Proc Natl Acad Sci U S A 101:1613-7. 2004..This is the earliest reported paleolimnological record of changes in aquatic ecology associated with local human activities in Canada or the United States, or for any circumpolar ecosystem...