Impacts anthropiques et traçage des
contaminants dans les sédiments lacustres
Charles.Gobeil [at] ete.inrs.ca (Charles[dot]Gobeil[at]ete[dot]inrs[dot]ca)
Biogéochimie arctique – Les enregistrements sédimentaires des métaux sont de puissants révélateurs des conditions qui ont prévalu en milieu marin. Traités de façon appropriée, ils aident à comprendre le cycle du carbone car plusieurs métaux répondent de façon variée aux changements d’oxydoréduction qui découlent du métabolisme de la matière organique dans les sédiments. Cette application impliquent toutefois que l’on connaisse bien la géochimie propre à chacun des éléments, et ce, à travers une gamme étendue de conditions environnementales. Nous examinons l’enregistrement du carbone dans les sédiments de la marge continentale arctique, simultanément à la distribution de radioéléments, isotopes stables, molécules organiques et de plusieurs éléments sensibles à l’oxydoréduction (manganèse, fer, soufre, cadmium, molybdène, rhénium et uranium). Nos carottages sont effectués dans le détroit de Davis, à travers l’archipel canadien (passage du nord-ouest), sur le plateau Mackenzie dans la mer de Beaufort, et dans les mers des Tchouktches et de Béring. Les données produites servent notamment à évaluer le rôle de la marge continentale arctique dans le fonctionnement biogéochimique de l’océan polaire, de même que les conséquences du réchauffement planétaire sur les cycles élémentaires à l’échelle de cet océan.
Biogéochimie lacustre – Les émissions industrielles dans l’atmosphère ont grandement augmenté le dépôt d’éléments traces toxiques dans les sédiments des lacs d’Amérique du Nord. Ces éléments peuvent être recyclés dans la colonne d’eau lorsque les conditions environnementales changent. Les solutions pour remédier à ces dégradations de la qualité de l'environnement aquatique sont coûteuses socialement et économiquement. L'élaboration de stratégies efficaces pour résoudre ces problèmes de contamination environnementale dépend donc fortement de notre aptitude à prédire comment des actions correctrices potentielles ou des changements éventuels dans les conditions du milieu vont affecter la qualité de l'eau et des sédiments. Les stratégies sont d’autant plus difficiles à établir que le devenir des contaminants en milieu aquatique est souvent intimement lié aux cycles complexes d'éléments réactifs, en particulier C, S, O, Fe et Mn. Il est donc ardu, voire impossible, d’anticiper intuitivement quel sera, par exemple, l'effet sur les contaminants sédimentaires de politiques de réduction des émissions de SO2 dans l’atmosphère, de l'eutrophisation ou de changements climatiques. À cet égard, nous proposons le développement de modèles de transport-réactions à composants multiples, qui prennent en compte les réactions clés et les processus de transport dans les sédiments. À terme, ces outils permettront de prédire l'altération des cycles des éléments traces sous différents scénarios de changements environnementaux.
Kuzyk, Z.Z.A., Gobeil, C., Goñi, M.A., Macdonald, R.W., 2017. Early diagenesis and trace element accumulation in North American Arctic margin sediments. Geochimica et Cosmochimica Acta 203, 175-200.
Clayer, F., Gobeil, C., Tessier, A., 2016. Rates and pathways of sedimentary organic matter mineralization in two basins of a boreal lake: Emphasis on methanogenesis and methanotrophy. Limnology and Oceanography 61 (S1), S131-S149.
Jautzy, J.J., Ahad, J.M.E., Hall, R.I., Wiklund, J.A., Wolfe, B.B., Gobeil, C., Savard, M.M., 2015. Source Apportionment of Background PAHs in the Peace-Athabasca Delta (Alberta, Canada) Using Molecular Level Radiocarbon Analysis. Environmental Science and Technology 49 (15), 9056-9063.
Ahad, J.M.E., Gammon, P.R., Gobeil, C., Jautzy, J., Krupa, S., Savard, M.M, Studabaker, W.B. 2014, Evaporative emissions from tailings ponds are not likely an important source of airborne PAHs in the Athabasca oil sands region, Proceedings of the National Academy of Sciences of the United States of America, vol. 111, no. 24.
Cossa, D., Garnier, C., Buscail, R., Elbaz-Poulichet, F., Mikac, N., Patel-Sorrentino, N., Tessier, E., Rigaud, S., Lenoble, V., Gobeil, C. 2014, A Michaelis-Menten type equation for describing methylmercury dependence on inorganic mercury in aquatic sediments, Biogeochemistry, 119, pp.19-43.
Tessier, A., Gobeil, C., Laforte, L. 2014, Reaction rates, depositional history and sources of indium in sediments from Appalachian and Canadian Shield lakes, Geochimica et Cosmochimica Acta, vol. 137, pp. 48-63.
Gobeil, C., Tessier, A., Couture, R.-M. 2013, Upper mississippi pb as a mid-1800s chronostratigraphic marker in sediments from seasonally anoxic lakes in eastern canada,Geochimica et Cosmochimica Acta, vol. 113, pp. 125-135.
Goni, M.A., A.E. O’Connor, Z.Z. Kuzyk, M.B. Yunker, C. Gobeil, R.W. Macdonald. 2013, Distribution and sources of organic matter in surface marine sediments across the North American Arctic margin. Journal Geophysical Research-Oceans, vol. 118, no. 9, pp. 4017-4035.
Jautzy, J., Ahad, J.M.E., Gobeil, C., Savard, M.M. 2013, Century-long source apportionment of PAHs in athabasca oil sands region lakes using diagnostic ratios and compound-specific carbon isotope signatures, Environmental Science and Technology, vol. 47, no. 12, pp. 6155-6163.
Kuzyk, Z.Z.A., Gobeil, C., Macdonald, R.W. 2013, 210Pb and 137Cs in margin sediments of the Arctic Ocean: Controls on boundary scavenging, Global Biogeochemical Cycles, vol. 27, no. 2, pp-422-439.
Macdonald, R.W. Gobeil, C. 2012. Manganese Sources and Sinks in the Arctic Ocean with Reference to Periodic Enrichments in Basin Sediments, Aquatic Geochemistry, vol. 18, no. 6, pp. 565-591.
Feyte, S., Gobeil, C., Tessier, A. Cossa, D. 2012. Mercury dynamics in lake sediments, Geochimica et Cosmochimica Acta, vol. 82, pp. 92-112.
Kuzyk, Z.Z.A., Macdonald, R.W., Stern, G.A. Gobeil, C. 2011. Inferences about the modern organic carbon cycle from diagenesis of redox-sensitive elements in Hudson Bay, Journal of Marine Systems, vol. 88. no. 3, pp. 451-462.
Feyte, S., Tessier, A., Gobeil, C. Cossa, D. 2010. In situ adsorption of mercury, methylmercury and other elements by iron oxyhydroxides and organic matter in lake sediments, Applied Geochemistry, vol. 25, no. 7, pp. 984-995.
Chappaz, A., Gobeil, C. Tessier, A. 2010. Controls on uranium distribution in lake sediments, Geochimica et Cosmochimica Acta, vol. 74, no. 1, pp. 203-214.
Couture, R.-., Shafei, B., Van Cappellen, P., Tessier, A. Gobeil, C. 2010. Non-steady state modeling of arsenic diagenesis in lake sediments, Environmental Science and Technology, vol. 44, no. 1, pp. 197-203.
Couture, R.-., Chiffoleau, J.-., Auger, D., Claisse, D., Gobeil, C. Cossa, D. 2010. Seasonal and decadal variations in lead sources to Eastern North Atlantic mussels, Environmental Science and Technology, vol. 44, no. 4, pp. 1211-1216.
Smith, J.N., Lee, K., Gobeil, C. Macdonald, R.W. 2009. Natural rates of sediment containment of PAH, PCB and metal inventories in Sydney Harbour, Nova Scotia, Science of the Total Environment, vol. 407. no. 17, pp. 4858-4869.
Kuzyk, Z.Z.A., Macdonald, R.W., Johannessen, S.C., Gobeil, C. Stern, G.A. 2009. Towards a sediment and organic carbon budget for Hudson Bay, Marine Geology, vol. 264, no. 3-4, pp. 190-208.
Macdonald, R.W., Johannessen, S.C., Gobeil, C., Wright, C., Burd, B., Roodselaar, A.V. Pedersen, T.F. 2008. Sediment redox tracers in Strait of Georgia sediments - Can they inform us of the loadings of organic carbon from municipal wastewater?, Marine environmental research, vol. 66, no. SUPPL., pp. S87-S100.
Couture, R.-., Gobeil, C. Tessier, A. 2008. Chronology of atmospheric deposition of arsenic inferred from reconstructed sedimentary records, Environmental Science and Technology, vol. 42, no. 17, pp. 6508-6513.
Chappaz, A., Gobeil, C. Tessier, A. 2008. Geochemical and anthropogenic enrichments of Mo in sediments from perennially oxic and seasonally anoxic lakes in Eastern Canada, Geochimica et Cosmochimica Acta, vol. 72, no. 1, pp. 170-184.
Chappaz, A., Gobeil, C. Tessier, A. 2008. Sequestration mechanisms and anthropogenic inputs of rhenium in sediments from Eastern Canada lakes, Geochimica et Cosmochimica Acta, vol. 72, no. 24, pp. 6027-6036.
Rouleau, C., Gobeil, C. Tjälve, H. 2006. Cadmium accumulation in coastal demersal fish, Marine Ecology Progress Series, vol. 311. pp. 131-143.
Gallon, C., Tessier, A., Gobeil, C. Carignan, R. 2006. Historical perspective of industrial lead emissions to the atmosphere from a Canadian smelter, Environmental Science and Technology, vol. 40, no. 3, pp. 741-747.
Desjardins, C., Gobeil, C. Sundby, B. 2006. Suitability of fish scales as archives of temporal variations in ambient mercury levels in estuaries, Estuaries and Coasts, vol. 29, no. 5, pp. 855-859.
Gobeil, C., Rondeau, B. Beaudin, L. 2005. Contribution of municipal effluents to metal fluxes in the St. Lawrence river,Environmental Science and Technology, vol. 39, no. 2, pp. 456-464.
Sundby, B., Caetano, M., Vale, C., Gobeil, C., Luther III, G.W. Nuzzio, D.B. 2005. Root-induced cycling of lead in salt marsh sediments, Environmental Science and Technology, vol. 39, no. 7, pp. 2080-2086.
Gilbert, D., Sundby, B., Gobeil, C., Mucci, A. Tremblay, G.-H. 2005. A seventy-two-year record of diminishing deep-water oxygen in the St. Lawrence estuary: The northwest Atlantic connection, Limnology and Oceanography, vol. 50, no. 5, pp. 1654-1666.
Laforte, L., Tessier, A., Gobeil, C. Carignan, R. 2005. Thallium diagenesis in lacustrine sediments, Geochimica et Cosmochimica Acta, vol. 69, no. 22, pp. 5295-5306.
Gallon, C., Tessier, A., Gobeil, C. Beaudin, L. 2005. Sources and chronology of atmospheric lead deposition to a Canadian Shield lake: Inferences from Pb isotopes and PAH profiles, Geochimica et Cosmochimica Acta, vol. 69, no. 13, pp. 3199-3210.
Sundby, B., Martinez, P. Gobeil, C. 2004. Comparative geochemistry of cadmium, rhenium, uranium, and molybdenum in continental margin sediments, Geochimica et Cosmochimica Acta, vol. 68, no. 11. pp. 2485-2493.
Gallon, C., Tessier, A., Gobeil, C. Alfaro-De La Torre, M.C. 2004. Modeling diagenesis of lead in sediments of a Canadian Shield lake, Geochimica et Cosmochimica Acta, vol. 68, no. 17, pp. 3531-3545.
Gallon, C., Gobeil, C., Tessier, A. Carignan, R. 2003. Stable Pb isotopes and PAHs as indicators of lead contamination sources in a lake of the Rouyn-Noranda area, Journal De Physique. IV : JP, pp. 505.
Rouleau, C., Gobeil, C. Tjäilve, H. 2001. Cadmium accumulation in the snow crab Chionoecetes opilio, Marine Ecology Progress Series, vol. 224, pp. 207-217.
Gobeil, C., Sundby, B., Macdonald, R.W. Smith, J.N. 2001. Recent change in organic carbon flux to Arctic Ocean deep basins: Evidence from acid volatile sulfide mangenese and rhenium discord in sediments, Geophysical Research Letters, vol. 28, no. 9, pp. 1743-1746.
Gobeil, C., Macdonald, R.W., Smith, J.N. Beaudin, L. 2001. Atlantic water flow pathways revealed by lead contamination in Arctic basin sediments, Science, vol. 293. no. 5533, pp. 1301-1304.
Cossa, D. Gobeil, C. 2000. Mercury speciation in the lower St. Lawrence estuary, Canadian Journal of Fisheries and Aquatic Sciences, vol. 57, no. SUPPL. 1, pp. 138-147.
Takayanagi, K. Gobeil, C. 2000. Dissolved aluminum in the upper St. Lawrence Estuary, Journal of Oceanography, vol. 56, no. 5, pp. 517-525.
Rouleau, C., Gobeil, C. Tjälve, H. 2000. Accumulation of silver from the diet in two marine benthic predators: The snow crab (Chionoecetes opilio) and American plaice (Hippoglossoides platessoides), Environmental Toxicology and Chemistry, vol. 19, no. 3, pp. 631-637.
Macdonald, R.W., Barrie, L.A., Bidleman, T.F., Diamond, M.L., Gregor, D.J., Semkin, R.G., Strachan, W.M.J., Li, Y.F., Wania, F., Alaee, M., Alexeeva, L.B., Backus, S.M., Bailey, R., Bewers, J.M., Gobeil, C., Halsall, C.J., Harner, T., Hoff, J.T., Jantunen, L.M.M., Lockhart, W.L., Mackay, D., Muir, D.C.G., Pudykiewicz, J., Reimer, K.J., Smith, J.N., Stern, G.A., Schroeder, W.H., Wagemann, R. Yunker, M.B. 2000. Contaminants in the Canadian Arctic: 5 years of progress in understanding sources, occurrence and pathways, Science of the Total Environment, vol. 254, no. 2-3, pp. 93-234.
Rouleau, C., Gobeil, C. Tjälve, H. 1999. Pharmacokinetics and distribution of dietary tributyltin and methylmercury in the snow crab (Chionoecetes opilio), Environmental Science and Technology, vol. 33, no. 19, pp. 3451-3457.
Gobeil, C. 1999. Silver in sediments from the St. Lawrence River and Estuary and the Saguenay Fjord, Environmental Science and Technology, vol. 33, no. 17, pp. 2953-2957.
Gobeil, C., Macdonald, R.W. Smith, J.N. 1999. Mercury profiles in sediments of the Arctic Ocean basins, Environmental Science and Technology, vol. 33, no. 23, pp. 4194-4198.
Macdonald, R.W., Solomon, S.M., Cranston, R.E., Welch, H.E., Yunker, M.B. Gobeil, C. 1998. A sediment and organic carbon budget for the Canadian beaufort shelf, Marine Geology, vol. 144, no. 4, pp. 255-273.
Rouleau, C., Gobeil, C. Tjälve, H. 1998. Pharmacokinetics and distribution of dietary tributyltin compared to those of methylmercury in the American plaice Hippoglossoides platessoides, Marine Ecology Progress Series, vol. 171, pp. 275-284.
Anschutz, P., Zhong, S., Sundby, B., Mucci, A. Gobeil, C. 1998. Burial efficiency of phosphorus and the geochemistry of iron in continental margin sediments, Limnology and Oceanography, vol. 43, no. 1, pp. 53-64.
Saint-Louis, R., Gobeil, C. Pelletier, E. 1997. Tributyltin and its degradation products in the St Lawrence estuary (Canada), Environmental technology, vol. 18, no. 12. pp. 1209-1218.
Gobeil, C., Macdonald, R.W. Sundby, B. 1997. Diagenetic separation of cadmium and manganese in suboxic continental margin sediments, Geochimica et Cosmochimica Acta, vol. 61, no. 21, pp. 4647-4654.
Gobeil, C., Johnson, W.K., Macdonald, R.W. Wong, C.S. 1995. Sources and burden of lead in St. Lawrence estuary sediments: Isotopic evidence, Environmental Science and Technology, vol. 29, no. 1, pp. 193-201.
Gobeil, C. Cossa, D. 1993. Mercury in sediments and sediment pore water in the Laurentian Trough, Canadian Journal of Fisheries and Aquatic Sciences, vol. 50, no. 8, pp. 1794-1800.
Sundby, B., Gobeil, C., Silverberg, N. Mucci, A. 1992. The phosphorus cycle in coastal marine sediments, Limnology Oceanography, vol. 37, no. 6, pp. 1129-1145.
Macdonald, R.W., Macdonald, D.M., O'Brien, M.C. Gobeil, C. 1991. Accumulation of heavy metals (Pb, Zn, Cu, Cd), carbon and nitrogen in sediments from Strait of Georgia, B.C., Canada, Marine Chemistry, vol. 34, no. 1-2, pp. 109-135.
Cossa, D., Tremblay, G.H. Gobeil, C. 1990. Seasonality in iron and manganese concentrations of the St. Lawrence River, Science of the Total Environment, vol. 97-98. pp. 185-190.
Tremblay, G.-. Gobeil, C. 1990. Dissolved arsenic in the St Lawrence Estuary and the Saguenay Fjord, Canada, Marine pollution bulletin, vol. 21, no. 10. pp. 465-469.
Gobeil, C. Silverberg, N. 1989. Early diagenesis of lead in Laurentian Trough sediments, Geochimica et Cosmochimica Acta, vol. 53, no. 8, pp. 1889-1895.
Cossa, D., Gobeil, C. Courau, P. 1988. Dissolved mercury behaviour in the Saint Lawrence estuary, Estuarine, Coastal and Shelf Science, vol. 26, no. 2, pp. 227-230.
Gobeil, C., Silverberg, N., Sundby, B. Cossa, D. 1987. Cadmium diagenesis in Laurentian Trough sediments, Geochimica et Cosmochimica Acta, vol. 51, no. 3, pp. 589-596.
Gobeil, C., Sundby, B. Silverberg, N. 1981. Factors influencing particulate matter geochemistry in the St. Lawrence estuary turbidity maximum, Marine Chemistry, vol. 10. no. 2, pp. 123-140.