Alfonso Mucci | Geotop

Impacts anthropiques sur la
chimie des océans,
acidification, hypoxie

McGill

Department of Earth and Planetary Sciences

alfonso.mucci [at] mcgill.ca (alfonso[dot]mucci[at]mcgill[dot]ca)

Thèmes de recherche
Publications
Étudiants

Mots clé: Aquatic geochemistry, solid and aqueous carbonate geochemistry, solid-solution interactions, early diagenesis, environmental geochemistry, oceanography, biosorption.

Trace metal geochemistry in freshwater and marine environments. Recent studies include the remobilization of trace metals in marine and coastal sediments as well as the fate of redox-sensitive species (e.g., Mn, Fe, As, Re, U, Mo) in sediments under varying conditions of oxygenation.

Since 2002, we have investigated factors responsible for the development of hypoxic conditions in the bottom waters of the Lower Estuary and Gulf of St. Lawrence as well as the impacts of hypoxia on the chemistry of the underlying sediments and the concomitant acidification of the waters. Early diagenesis of marine, coastal and estuarine sediments including the biochemical processes that control the accumulation and preservation of organic and inorganic carbon in marine sediments and the generation of hypoxic bottom waters in the St. Lawrence Estuary.

The carbon cycle in the oceans, most recently within the Canadian Arctic Shelf Exchange Study (CASES), Circumpolar Flaw Lead (CFL), GEOTRACES, MALINA and ArcticNet programs in the Beaufort Sea and throughout the northwest passage. We have acquired multiproxy data since 2003, including two continuous 12-month records, to characterize the carbon budget, the magnitude and seasonality of the carbon dioxide flux at the air-sea interface, and identify the various water masses. Application of chemical thermodynamics, kinetics and surface chemistry to the characterization of equilibrium mineral phases in natural aquatic environments and the study of solid-solution interactions. In most natural waters, the solid phases that control the solubility of their dissolved constituents are rarely pure phases since they adsorb and incorporate foreign ions present in solution. The partitioning of these ions in the solids is determined by their affinity for the solid surface, their compatibility with the solid structure, and the rate at which the solids are precipitated. Most recent work has focussed on modeling charge development and the electrokinetic properties of carbonate minerals in the framework of surface complexation theory.

Accès libre Chaillou, G., Tommi-Morin, G., Mucci, A., 2024. Production and fluxes of inorganic carbon and alkalinity in a subarctic subterranean estuary. Frontiers in Marine Science 11, 1323463.

Accès libre Dang, D. H., Wang, W., Omanović, D., Mucci, A., 2024. Mixing behaviour and sources of Ag, Pd, and other trace elements in the Estuary and Gulf of St. Lawrence under winter conditions. Chemosphere 363, 142935.

Accès libre Pascal, L., Cool, J., Archambault, P., Calosi, P., Cuenca, A. L., Mucci, A. O., Chaillou, G., 2024. Ocean deoxygenation caused non‐linear responses in the structure and functioning of benthic ecosystems. Global Change Biology 30(1), e16994. Données / Data

Qudsi, Z., Mucci, A. O., Dang, H., Gélinas, Y., Chaillou, G., 2024. Contrasting rare earth element concentrations and mixing behaviors in the St. Lawrence estuary and Saguenay Fjord. Marine Chemistry 258, 104336.

Accès libre Wang, Y., Gélinas, Y., de Vernal, A., Mucci, A., Allan, E., Seidenkrantz, M.-S., Douglas , P.M.J., 2024. High rates of marine organic carbon burial on the southwest Greenland margin induced by Neoglacial advances. Communications Earth & Environment 5, 335. Données / Data

Accès libre Allan, E., Douglas, P., de Vernal, A., Gélinas, Y., Mucci, A., 2023. Palmitic acid is not a proper salinity proxy in Baffin Bay and the Labrador Sea but reflects the variability in organic matter sources modulated by sea ice coverage. Geochemistry, Geophysics, Geosystems 24(9), e2022GC010837. Données / Data

Accès libre Audet, T., de Vernal, A., Mucci, A., Seidenkrantz, M. S., Hillaire-Marcel, C., Carnero-Bravo, V., Gélinas, Y., 2023. Benthic Foraminiferal Assemblages from the Laurentian Channel in the Lower Estuary and Gulf of ST. Lawrence, Eastern Canada: Tracers of Bottom-Water Hypoxia. Journal of Foraminiferal Research 53(1), 57-77.

Accès libre Jutras, M., Dufour, C.O., Mucci, A., Talbot, L.C., 2023. Large-scale control of the retroflection of the Labrador Current. Nature Communications 14(1), 2623.

Accès libre Jutras, M., Mucci, A., Chaillou, G., Nesbitt, W. A., Wallace, D. W., 2023. Temporal and spatial evolution of bottom-water hypoxia in the Estuary and Gulf of St. Lawrence. Biogeosciences 20(4), 839-849.

Accès libre Bruyant, F., Amiraux, R., Amyot, M. P., Archambault, P., Artigue, L., Barbedo de Freitas, L. et al., 2022. The Green Edge cruise: investigating the marginal ice zone processes during late spring and early summer to understand the fate of the Arctic phytoplankton bloom. Earth System Science Data 14(10), 4607-4642.

Charbonnier, C., Anschutz, P., Abril, G., Mucci, A., Deirmendjian, L., Poirier, D., Bujan, S., Lecroart, P., 2022. Carbon dynamics driven by seawater recirculation and groundwater discharge along a forest-dune-beach continuum of a high-energy meso-macro-tidal sandy coast. Geochimica et Cosmochimica Acta 317, 18-38.

Accès libre Cui, X., Mucci, A., Bianchi, T. S., He, D., Vaughn, D., Williams, E. K. et al., 2022. Global fjords as transitory reservoirs of labile organic carbon modulated by organo-mineral interactions. Science Advances 8(46), eadd0610.

Dang, D.H., Omanović, D., Mucci, A., Wang, W., Sikma, A., Chatzis, A., 2022. The winter estuarine geochemistry of platinum in the Estuary and Gulf of St. Lawrence. Marine Chemistry 242, 104123.

Dang, D.H., Wang, W., Sikma, A., Chatzis, A., Mucci, A., 2022. The contrasting estuarine geochemistry of rare earth elements between ice-covered and ice-free conditions. Geochimica et Cosmochimica Acta 317, 488-506.

Povar, I., Spinu, O., Mucci, A., 2022. pH-Metric Determination of the Equilibrium Constants in Aqueous Heterogeneous Systems. In Handbook of Research on Water Sciences and Society, pp. 222-255. IGI Global.

Accès libre Sundby, B., Anschutz, P., Lecroart, P., Mucci, A., 2022. Sea-level change, anaerobic methane oxidation, and the glacial–interglacial phosphorus cycle. Biogeosciences 19(5), 1421-1434.

Zhang, S., Ghouleh, Z., Mucci, A., Bahn, O., Provençal, R., Shao, Y., 2022. Production of cleaner high-strength cementing material using steel slag under elevated-temperature carbonation. Journal of Cleaner Production 342, 130948.

Zod, N., Mucci, A., Bahn, O., Provençal, R., Shao, Y., 2022. Steel slag-bonded strand board as a carbon-negative building product. Construction and Building Materials 340, 127695.

Cossa, D., Mucci, A., Guédron, S., Coquery, M., Radakovich, O., Escoube, R., Campillo, S., Heussner, S., 2021. Mercury accumulation in the sediment of the Western Mediterranean abyssal plain: A reliable archive of the late Holocene. Geochimica et Cosmochimica Acta 309, 1-15.

Accès libre Lange, B.A., Haas, C., Mucci, A., Beckers, J.F., Casey, J.A., Duerksen, S., Granskog, M.A., Hatam, I., Niemi, A., Reppchen, A., Michel, C., 2021. Contribution of Snow to Arctic First‐Year and Multi‐Year Sea Ice Mass Balance Within the Last Ice Area. Journal of Geophysical Research: Oceans 126(5), e2020JC016971.

Accès libre Lund, S.P., Richardson, M., Verosub, K., King, J., Champion, D., St‐Onge, G., 2021. Comparison and Renormalization of Holocene Paleointensity Records from Central North America (17° N‐51° N, 205° E‐295° E). Earth and Space Science 8(12), e2021EA001900.

Marshall, N.R., de Vernal, A., Mucci, A., Kienast, M., Filippova, A., Hillaire-Marcel, C., 2021. Carbonate dissolution and environmental parameters govern coccolith vs. alkenone abundances in surface sediments from the Northwest North Atlantic. Marine Micropaleontology 169, 102032.

Marshall, N.R., de Vernal, A., Mucci, A., Filippova, A., Kienast, M., Gibb, O., Hillaire-Marcel, C., 2021. Biogenic carbonate fluxes and preservation in the northwestern Labrador Sea since the Last Glacial Maximum. Palaeogeography, Palaeoclimatology, Palaeoecology 576, 110498.

Accès libre Massicotte, P., Amon, R.M., Antoine, D., Archambault, P., Balzano, S., Bélanger, S., Benner, R., Boeuf, D., Bricaud, A., Bruyant, F., Chaillou, G. (incl. A. Mucci & A. Rochon), 2021. The Malina oceanographic expedition: How do changes in ice cover, permafrost and UV radiation impact biodiversity and biogeochemical fluxes in the Arctic Ocean? Earth System Science Data 13(4), 1561-1592.

Nesbitt, W.A., Mucci, A., 2021. Direct evidence of sediment carbonate dissolution in response to bottom-water acidification in the Gulf of St. Lawrence, Canada. Canadian Journal of Earth Sciences 58(1), 84-92.

Accès libre Beauchesne, D., Daigle, R.M., Vissault, S., Gravel, D., Bastien, A., Bélanger, S., Bernatchez, P., Blais, M., Bourdages, H., Chion, C., Galbraith, P.S., Halpern, B.S., Lavoie, C., McKindsey, C.W., Mucci, A., Pineault, S., Starr, M., Ste-Marie, A.-S., Archambault, P., 2020. Characterizing Exposure to and Sharing Knowledge of Drivers of Environmental Change in the St. Lawrence System in Canada. Frontiers in Marine Science 7, 383.

Accès libre Beaupré-Laperrière, A., Mucci, A., Thomas, H., 2020. The recent state and variability of the carbonate system of the Canadian Arctic Archipelago and adjacent basins in the context of ocean acidification. Biogeosciences 17(14), 3923-3942.

Boudreau, B.P., Sulpis, O., Mucci, A., 2020. Control of CaCO3 dissolution at the deep seafloor and its consequences. Geochimica et Cosmochimica Acta 268, 90-106.

Accès libre Delaigue, L., Thomas, H., Mucci, A., 2020. Spatial variations of CO 2 fluxes in the Saguenay Fjord (Québec, Canada) and results of a water mixing model. Biogeosciences 17, 547-566.

Accès libre Jutras, M., Dufour, C.O., Mucci, A., Cyr, F., Gilbert, D., 2020. Temporal changes in the causes of the observed oxygen decline in the St. Lawrence Estuary. Journal of Geophysical Research: Oceans 125(12), e2020JC016577.

Jutras, M., Mucci, A., Sundby, B., Gratton, Y., Katsev, S., 2020. Nutrient cycling in the Lower St. Lawrence Estuary: Response to environmental perturbations. Estuarine, Coastal and Shelf Science 239, 106715.

Accès libre Mears, C., Thomas, H., Henderson, P.B., Charette, M.A., MacIntyre, H., Dehairs, F., Monnin, C., Mucci, A., 2020. Using 226Ra and 228Ra isotopes to distinguish water mass distribution in the Canadian Arctic Archipelago. Biogeosciences 17(20), 4937-4959.

Richard, D., Mucci, A., Neculita, C.M., Zagury, G.J., 2020. Comparison of organic materials for the passive treatment of synthetic neutral mine drainage contaminated by nickel: adsorption and desorption kinetics and isotherms. Water, Air, & Soil Pollution 231(12), 1-15.

Richard, D., Mucci, A., Neculita, C.M., Zagury, G.J., 2020. Comparison of organic materials for the passive treatment of synthetic neutral mine drainage contaminated by nickel: Short-and medium-term batch experiments. Applied Geochemistry 123, 104772.

Jones, M.R., Luther III, G.W., Mucci, A., Tebo, B.M., 2019. Concentrations of reactive Mn (III)-L and MnO2 in estuarine and marine waters determined using spectrophotometry and the leuco base, leucoberbelin blue. Talanta 200, 91-99.

Jones, M.R., Oldham, V.E., Luther, G.W., Mucci, A., Tebo, B.M., 2019. Distribution of desferrioxamine-B-extractable soluble manganese (III) and particulate MnO2 in the St. Lawrence Estuary, Canada. Marine Chemistry 208, 70-82.

Oldham, V.E., Siebecker, M.G., Jones, M.R., Mucci, A., Tebo, B.M., Luther, G.W., 2019. The speciation and mobility of Mn and Fe in estuarine sediments. Aquatic Geochemistry 25(1), 3-26.

Sulpis, O., Dufour, C.O., Trossman, D.S., Fassbender, A.J., Arbic, B.K., Boudreau, B.P., Dunne, J.P., Mucci, A., 2019. Reduced CaCO3 flux to the seafloor and weaker bottom current speeds curtail benthic CaCO3 dissolution over the 21st century. Global Biogeochemical Cycles 33(12), 1654-1673.

Sulpis, O., Mucci, A., Boudreau, B.P., Barry, M.A., Johnson, B.D., 2019. Controlling the diffusive boundary layer thickness above the sediment–water interface in a thermostated rotating‐disk reactor. Limnology and Oceanography: Methods 17(4), 241-253.

Bénard, R., Levasseur, M., Scarratt, M., Blais, M.-A., Mucci, A., Ferreyra, G., Starr, M., Gosselin, M., Tremblay, J.-E., Lizotte, M., 2018. Experimental assessment of the sensitivity of an estuarine phytoplankton fall bloom to acidification and warming. Biogeosciences 15 (16), 4883-4904. DOI: 10.5194/bg-15-4883-2018

Dinauer, A., Mucci, A., 2018. Distinguishing between physical and biological controls on the spatial variability of pCO2: A novel approach using OMP water mass analysis (St. Lawrence, Canada). Marine Chemistry 204, 107-120. DOI: 10.1016/j.marchem.2018.03.007

Granger, J., Sigman, D.M., Gagnon, J., Tremblay, J.-E., Mucci, A., 2018. On the Properties of the Arctic Halocline and Deep Water Masses of the Canada Basin from Nitrate Isotope Ratios. Journal of Geophysical Research: Oceans 123 (8), 5443-5458. DOI: 10.1029/2018JC014110

Mol, J., Helmuth, T., Myers, P.G., Hu, X. and Mucci, A., 2018. Inorganic carbon fluxes on the Mackenzie Shelf of the Beaufort Sea. Biogeosciences 15 (4), 1011-1027.

Mucci, A., Levasseur, M., Gratton, Y., Martias, C., Scarratt, M., Gilbert, D., Tremblay, J.-É., Ferreyra, G., Lansard, B., 2018. Tidally induced variations of ph at the head of the laurentian channel. Canadian Journal of Fisheries and Aquatic Sciences 75 (7), 1128-1141. DOI: 10.1139/cjfas-2017-0007

Sulpis, O., Boudreau, B.P., Mucci, A., Jenkins, C., Trossman, D.S., Arbic, B.K., Key, R.M., 2018. Current CaCO3 dissolution at the seafloor caused by anthropogenic CO2. Proceedings of the National Academy of Sciences 115(46), 11700-11705.

Veetil, S.P., Mucci, A. and Arakaki, T., 2018. Dolomite dissolution kinetics in aqueous solutions in the presence of organic and inorganic additives at 25° C and pCO2~ 1 atm. Chemical Geology 483, 98-110.

Woosley, R.J., Mucci, A., Chen, C.-T., 2018. Preface: Honoring Frank Millero - 24 Years as Editor-in-Chief: Marine Physical Chemistry and Marine Carbon Chemistry. Marine Chemistry 195, 1. DOI: 10.1016/j.marchem.2017.08.008

Dinauer, A., Mucci, A., 2017. Spatial variability in surface-water pCO2 and gas exchange in the world's largest semi-enclosed estuarine system: St. Lawrence Estuary (Canada). Biogeosciences 14 (13), 3221-3237. DOI: 10.5194/bg-14-3221-2017

Hussherr, R., Levasseur, M., Lizotte, M., Tremblay, J.-É., Mol, J., Thomas, H., Gosselin, M., Starr, M., Miller, L.A., Jarniková, T., Schuback, N., Mucci, A., 2017. Impact of ocean acidification on Arctic phytoplankton blooms and dimethyl sulfide concentration under simulated ice-free and under-ice conditions. Biogeosciences 14 (9), 2407-2427.

Oldham, V.E., Mucci, A., Tebo, B.M., Luther, G.W., III, 2017. Soluble Mn(III)–L complexes are abundant in oxygenated waters and stabilized by humic ligands. Geochimica et Cosmochimica Acta 199, 238-246. DOI: 10.1016/j.gca.2016.11.043

Sulpis, O., Lix, C., Mucci, A., Boudreau, B.P., 2017. Calcite dissolution kinetics at the sediment-water interface in natural seawater. Marine Chemistry 195, 70-83.

Veetil, S.P., Mucci, A., Arakaki, T., 2017. Dolomite dissolution in aqueous solutions in the presence of nucleotides and their structural components at 25°C and pCO2 ~1atm. Chemical Geology 465, 64-74.

Luo, Y., Boudreau, B.P., Mucci, A., 2016. Disparate acidification and calcium carbonate desaturation of deep and shallow waters of the Arctic Ocean. Nature Communications, 7, art. no. 12821. DOI: 10.1038/ncomms12821

Varela, D.E., Brzezinski, M.A., Beucher, C.P., Jones, J.L., Giesbrecht, K.E., Lansard, B., Mucci, A., 2016. Heavy silicon isotopic composition of silicic acid and biogenic silica in Arctic waters over the Beaufort shelf and the Canada Basin. Global Biogeochemical Cycles 30 (6), 804-824. DOI: 10.1002/2015GB005277

Mahoutian, M., Shao, Y., Mucci, A., Fournier, B., 2015. Carbonation and hydration behavior of EAF and BOF steel slag binders. Materials and Structures/Materiaux et Constructions 48 (9), 3075-3085.

Mucci, A., Bernier, G., Guignard, C., 2015. Mercury remobilization in Saguenay Fjord (Quebec, Canada) sediments: Insights following a mass-flow event and its capping efficiency. Applied Geochemistry 54, 13-26.

Pellerin, A., Bui, T.H., Rough, M., Mucci, A., Canfield, D.E., Wing, B.A., 2015. Mass-dependent sulfur isotope fractionation during reoxidative sulfur cycling: A case study from Mangrove Lake, Bermuda. Geochimica et Cosmochimica Acta 149, 152-164.

Shao, Y., El-Baghdadi, A., He, Z., Mucci, A., Fournier, B., 2015. Carbon dioxide-activated steel slag for slag-bonded wallboard application. Journal of Materials in Civil Engineering, 27 (3), doi: 10.1061/(ASCE)MT.1943-5533.0001055

Sundby, B., Lecroart, P., Anschutz, P., Katsev, S., Mucci, A., 2015. When deep diagenesis in Arctic Ocean sediments compromises manganese-based geochronology. Marine Geology 366, 62-68.

Barber, A., Lalonde, K., Mucci, A., Gélinas, Y. 2014, The role of iron in the diagenesis of organic carbon and nitrogen in sediments: A long-term incubation experiment, Marine Chemistry, vol. 162, pp. 1-9.

Giesbrecht, K.E., Miller, L.A., Davelaar, M., Zimmermann, S., Carmack, E., Johnson, W.K., Macdonald, R.W., McLaughlin, F., Mucci, A., Williams, W.J., Wong, C.S., Yamamoto-Kawai, M. 2014, Measurements of the dissolved inorganic carbon system and associated biogeochemical parameters in the Canadian Arctic, 1974-2009, Earth System Science Data, vol. 6, no. 1, pp. 91-104.

Kim, S.-T., Gebbinck, C.K., Mucci, A., Coplen, T.B. 2014, Oxygen isotope systematics in the aragonite-CO2-H2O-NaCl system up to 0.7mol/kg ionic strength at 25°C, Geochimica et Cosmochimica Acta, vol. 137, pp. 147-158.

Luther, G.W., Madison, A.S., Mucci, A., Sundby, B., Oldham, V.E., 2014. A kinetic approach to assess the strengths of ligands bound to soluble Mn(III). Marine Chemistry, in press.

Mahoutian, M., Shao, Y., Mucci, A., Fournier, B. In press, Carbonation and hydration behavior of EAF and BOF steel slag binders, Materials and Structures

Miller, L.A., Giesbrecht, K.E., Mucci, A. and Zimmerman, S. In press. Changes in the marine carbonate system of the western Arctic: Patterns in a rescued data set. Polar Research.

Shao, Y., El-Bagdadi, A., He, Z., Mucci, A. and Fournier, B. In press. Carbon dioxide activated steel slag for slag-bonded wallboard application. J. Materials Civil Engineering.

Silverberg, N., Bahena, F.A., Mucci, A. 2014, Time-series measurements of settling particulate matter in Alfonso Basin, La Paz Bay, southwestern Gulf of California. Continental Shelf Research, vol. 84, pp .169-187.

Else, B.G.T., Galley, R.J., Lansard, B., Barber, D.G., Brown, K., Miller, L.A., Mucci, A., Papakyriakou, T.N., Tremblay, J.-É., Rysgaard, S. 2013, Further observations of a decreasing atmospheric CO2 uptake capacity in the Canada Basin (Arctic Ocean) due to sea ice loss, Geophysical Research Letters, vol. 40, no. 6, pp. 1132-1137.

Madison, A.S., Tebo, B.M., Mucci, A., Sundby, B., Luther III, G.W. 2013, Abundant porewater Mn(III) is a major component of the sedimentary redox system, Science, vol. 341, no. 6148, pp. 875-878.

Pratte, S., Mucci, A., Garneau, M. 2013, Historical records of atmospheric metal deposition along the St. Lawrence Valley (eastern Canada) based on peat bog cores, Atmospheric Environment, vol. 79, pp. 831-840.

Richard, D., Sundby, B., Mucci, A. 2013, Kinetics of manganese adsorption, desorption, and oxidation in coastal marine sediments, Limnology and Oceanography, vol. 58, no. 3, pp. 987-996.

Else, B.G.T., Papakyriakou, T.N., Galley, R.J., Mucci, A., Gosselin, M., Miller, L.A., Shadwick, E.H., Thomas, H. 2012. Annual cycles of pCO2 sw in the southeastern Beaufort Sea : New understandings of air-sea CO2 exchange in arctic polynya regions. Journal of Geophysical Research C : Oceans, 117 (4), art. no. C00G13.

Lalonde, K., Mucci, A., Ouellet, A., Gélinas, Y. 2012. Preservation of organic matter in sediments promoted by iron. Nature, 483 (7388) 198-200.

Lansard, B., Mucci, A., Miller, L.A., MacDonald, R.W., Gratton, Y. 2012. Seasonal variability of water mass distribution in the southeastern Beaufort Sea determined by total alkalinity and δ18O. Journal of Geophysical Research C: Oceans, 117 (3) art. No. C03003.

Lefort, S., Gratton, Y., Mucci, A., Dadou, I., Gilbert, D. 2012. Hypoxia in the Lower St. Lawrence Estuary: How physics controls spatial patterns. Journal of Geophysical Research C: Oceans, 117 (7), art. no. C07018.

Lefort, S., Mucci, A., Sundby, B. 2012. Sediment response to 25 years of persistent hypoxia. Aquatic Geochemistry, 18(6), 461-474.

Thibodeau, B., Lehmann, M.F., Kowarzyk, J., Mucci, A., Gélinas, Y., Gilbert, D., Maranger, R., Alkhatib, M. 2012. Erratum to " Benthic nutrient fluxes along the laurentian channel: Environmental controls and impact on the N-budget of the St. Lawrence marine system" [Estuar. Coast. Shelf Sci. 90 (4) (2010) 195-205]. Estuarine, Coastal and Shelf Science, 107, 165.

Chierici M., Fransson A., Lansard B., Miller L.A., Mucci A., Shadwick E., Thomas H., Tremblay J.-E. and Papakyriakou T. 2011. The impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean. J. Geophys. Res.-Oceans 116: C00G09.

Crowe, S., Katsev, S., Leslie, K., Sturm, A., Magen, C., Nomosatryo, S., Pack, M., Kessler, J., Reeburgh, W., Roberts, J., Gonzalez, L., Haffner, G., Mucci, A., Sundby, B., Fowle, D., 2011. The methane cycle in ferruginous Lake Matano, Geobiology, 9(1), 61-78.

Genovesi, L., de Vernal, A., Thibodeau, B., Hillaire-Marcel, C., Mucci, A., Gilbert, D., 2011. Recent changes in bottom water oxygenation and temperature in the gulf of st. Lawrence: Micropaleontological and geochemical evidence, Limnology and Oceanography, 56(4), 1319-1329.

Mackensie, F.T., Mucci, A., Luther III, G.W. 2011. Preface to John W. Morse Special Issue of Aquatic Geochemistry. Aquatic Geochemistry, 17 (4), 307-310.

Magen, C., Mucci, A., Sundby, B., 2011. Reduction rates of sedimentary Mn and Fe oxides: an incubation experiment with Arctic Ocean sediments. Aquatic Geochemistry, 17, 629-643.

Miller, L. A., Papakyriakou, T.N., Collins, R.E., Deming, J.W., Ehn, J.K., Macdonald, R.W., Mucci, A., Owens, O., Raudsepp, M., Sutherland, N. 2011. Carbon dynamics in sea ice: A winter flux time series, Journal of Geophysical Research, 116, C02028, doi:10.1029/2009JC006058.

Mucci, A., Starr, M., Gilbert, D., Sundby, B., 2011. Acidification of Lower St. Lawrence Estuary bottom waters, Atmosphere-Ocean, 49, 206-213.

Thomas, H., Shadwick, E., Dehairs, F., Lansard, B., Mucci, A., Navez, J., Gratton, Y., Prowe, F., Chierici, M., Fransson, A., Papakyriakou, T.N., Strenberg, E., Miller, L., Tremblay, J.-E., Monnin, C., 2011. Barium and carbon fluxes in the Canadian Arctic Archipelago, Journal of Geophysical Research-Oceans, 116, C00G08.

Shadwick, E.H., Thomas, H., Chierici, M., Else, B., Fransson, A., Michel, C., Miller, L.A., Mucci, A., Niemi, A., Papakyriakou, T.N., Tremblay, J.-É., 2011. Seasonal variability of the inorganic carbon system in the Amundsen Gulf region of the Southeastern Beaufort Sea, Limnology and Oceanography 56(1), 303-322.

Katsev, S., Crowe, S.A., Mucci, A., Sundby, B., Nomosatryo, S., Haffner, G.D., Fowle, D.A., 2010. Mixing in deep tropical Lake Matano, Indonesia: Controls on the vertical distribution of solutes, Limnology and Oceanography, 55(2), 763-776.

Magen, C., Chaillou, G., Crowe, S.A., Mucci, A., Sundby, B., Gao,.A., Makabe, R., Sasaki, H., 2010. Origin and fate of particulate organic matter in the Southern Beaufort Sea - Amundsen Gulf region, Canadian Arctic, Estuarine, Coastal and Shelf Science, 86(1), 31-41.

Mucci, A., Lansard, B., Miller, L.A., Papakyriakou, T.N., 2010. CO2 fluxes across the air‐sea interface in the southeastern Beaufort Sea: Ice‐free period, Journal of Geophysical Research, 115(4), C04003, doi:10.1029/2009JC005330.

Thibodeau, B., de Vernal, A., Hillaire-Marcel, C., Mucci, A., 2010. Twentieth Century warming in deep waters of the Gulf of St. Lawrence: A unique feature of the last millennium, Geophysical Research Letters, 37, L17604, doi:10.1029/2010GL044771.

Thibodeau, B., Lehmann, M.F., Kowarzyk, J., Mucci, A., Gélinas, Y., Gilbert, D., Maranger, R., Alkhatib, M., 2010. Benthic nutrient fluxes along the Laurentian Channel: Impacts on the N budget of the St. Lawrence marine system, Estuarine, Coastal and Shelf Science, 90(4), 195-205.

Villegas-Jimenez, A., Mucci, A., 2010. Estimating intrinsic formation constants of mineral surface species using a genetic algorithm, Mathematical Geosciences, 42, 101-127, doi: 10.1007/s11004-009-9259-8.

Villegas-Jiménez, A., Mucci, A., Pokrovsky, O.S., Schott, J., 2010. Acid-base behavior of the gaspeite (NiCO3(s)) surface in NaCl solutions, Langmuir, 26 (15), 12626-12639.

Kim, S.-T., Kang, J.O., Yun, S.-T., O'Neil, J.R., Mucci, A., 2009. Experimental studies of oxygen isotope fractionation between rhodochrosite (MnCO3) and water at low temperatures, Geochimica et Cosmochimica Acta, 73 (15), 4400-4408, doi: 10.1016/j.gca.2009.04.018.

Lehmann, M.F., Barnett, B., Gélinas, Y., Gilbert, D., Maranger, R., Mucci, A., Sundby, B., Thibodeau, B., 2009. Aerobic respiration and hypoxia in the lower St. Lawrence Estuary: Stable isotope ratios of dissolved oxygen constrain oxygen sink partitioning, Limnology and Oceanography, 54(6), 2157-2169.

Villegas-Jiménez, A., Mucci, A., Paquette, J., 2009. Proton/calcium ion exchange equilibria in calcite, Physical Chemistry Chemical Physics, 11(32), 8895-8912, DOI:10.1039/B815198A.

Villegas-Jiménez, A., Mucci, A., Pokrovsky, O.S., Schott, J., 2009. Defining Reactive Sites on Hydrated Mineral Surfaces: Rhombohedral Carbonate Minerals, Geochimica et Cosmochimica Acta, 73 (15), 4326-4345, doi:10.1016/j.gca.2009.04.036.

Villegas-Jiménez, A., Mucci, A., Whitehead, M.A., 2009. Theoretical insights into the hydrated (10.4) calcite surface: Structure, energetics, and bonding relationships, Langmuir, 25 (12), 6813-6824.

Crowe, S.A., Jones, C., Katsev, S., Magen, C., O’Neill, A.H., Sturm, A, Canfield, D., Haffner, G.D., Mucci, A., Sundby, B., Fowle, D.A., 2008. Photoferrotrophs thrive in an Archean Ocean analogue, Proceedings of the National Academy of Sciences of the United States of America (PNAS), 105(41), 15938-15943.

Crowe, S.A., O’Neill, A.H., Katsev, S., Hehanussa, P., Haffner, G.D., Sundby, B., Mucci, A., Fowle, D., 2008. The biogeochemistry of tropical lakes: A case study from ancient Lake Matano, Indonesia, Limnology and Oceanography, 53(1), 319-331.

Mucci, A., Forest, A., Fortier, L., Fukuchi, M., Grant, J., Hattori, H., Hill, P., Lintern, G., Makabe, R., Magen, C., Miller, L., Sampei, M., Sasaki, H., Sundby, B., Walker, T., Wassmann, P., 2008. Organic and Inorganic Fluxes. In : L. Fortier, D.G. Barber and J. Michaud (Eds.), On Thin Ice: A synthesis of the Canadian Arctic Shelf Exchange Study (CASES), Aboriginal Issues Press, Chapter 7, 143-158, 215pp.

Katsev, S., Chaillou, G., Sundby, B.,Mucci, A., 2007. Impact of progressive oxygen depletion on sediment diagenesis and fluxes: A model for the Lower St. Lawrence Estuary, Limnol. Oceanogr., 52(6), 2555-2568. GEOTOP Publication n° 2007-0058.

Kim, S.-T., Mucci, A. , Taylor, B.E., 2007. Phosphoric acid fractionation factors for calcite and aragonite between 25 and 75°C: revisited, Chemical Geology, 246 (3-4), 135-146.

Kim, S.-T., O’Neil, J.R., Hillaire-Marcel, C., Mucci, A., 2007. Oxygen isotope fractionation between synthetic aragonite and water: Influence of temperature and Mg2+ concentration, Geochim. Cosmochim. Acta, 71, 4704–4715. GEOTOP Publication n°2007-0027.

McKay, J.L., Pedersen, T.F. , Mucci, A., 2007. Sedimentary redox conditions in continental margin sediments (N.E. Pacific) – Influence on the accumulation of redox-sensitive trace metals, Chemical Geology, 238, 180-196.

Benoît, P., Gratton, Y., Mucci, A., 2006. Modeling of dissolved oxygen levels in the bottom waters of the Lower St. Lawrence Estuary: coupling of benthic and pelagic processes, Marine Chemistry, 102, 13-32.

Chien, Y.-C., Mucci, A., Paquette, J., Sears, S.K., Vali, H., 2006. Comparative study of nanoscale surface structures of calcite microcrystals using FE-SEM, AFM, and TEM, Microscopy and Microanalysis, 12, 1-9.

Desrosiers, M., Planas, D., Mucci, A., 2006. Total mercury and methylmercury accumulation in periphyton of Boreal Shield Lakes: influence of watershed physiographic characteristics, Science of the Total Environment, 355, 247-258. GEOTOP Publication n° 2006-0019.

Desrosiers, M., Planas, D., Mucci, A., 2006. Mercury methylation in the epilithon of Boreal Shield aquatic ecosystems, Environmental Science & Technology, 40, 1540-1546. GEOTOP Publication n° 2006-0006.

Desrosiers, M., Planas, D., Mucci, A., 2006. Short-term responses to watershed logging on biomass, mercury and methylmercury accumulation by periphyton in boreal lakes, Can. J. Fish. Aquat. Sci., 63, 1734-1745. GEOTOP Publication n° 2006-0005.

Katsev, S., Sundby ,B., Mucci, A., 2006. Modeling vertical excursions of the redox boundary in sediments: Application to deep basins of the Arctic Ocean, Limnol. Oceanogr., 51, 1581-1593.

Kim, S.-T., Hillaire- Marcel, C. , Mucci, A., 2006. Mechanisms of equilibrium and kinetic oxygen isotope effects in synthetic aragonite at 25°C, Geochim. Cosmochim. Acta, 70, 5790-5801, doi:10.1016/ j.gca.2006.08.003. GEOTOP Publication n° 2006-0001.

Thibodeau, B., de Vernal, A., Mucci, A., 2006. Recent eutrophication and consequent hypoxia in the bottom waters of the Lower St. Lawrence Estuary: micropaleontological and geochemical evidence, Marine Geology, 231, 37-50. GEOTOP Publication n° 2006-0007.

Gilbert, D., Sundby, B., Gobeil, C., Mucci, A., Tremblay, G., 2005. A seventy-two-year record of diminishing deep-water oxygen in the St. Lawrence estuary – the northwest Atlantic connection, Limnol. Oceanogr., 50, 1654-1666.

Mucci, A., 2004. The behavior of mixed Ca-Mn carbonates in water and seawater: controls of manganese concentrations in marine porewaters, Aquatic Geochemistry, 10, 139-169. GEOTOP Publication n° 2004-0006.

Davis, T.A., Ramirez, M., Mucci, A., Larsen, B., 2004. Extraction, isolation and cadmium binding of alginate from Sargassum spp., J. Applied Phycology, 16, 275-284. GEOTOP Publication n° 2004-0004.

Garand, A., Mucci, A., 2004. The solubility of fluorite as a function of ionic strength and solution composition at 25°C and 1 atm total pressure, Marine Chemistry, 91, 27-35. GEOTOP Publication n° 2004-0005.

Davis, T.A., El Cheikh Ali, F., Giannitti, E., Volesky, B., Mucci, A., 2004. Cadmium biosorption by S. fluitans: treatment, resilience and uptake relative to other Sargassum spp. and brown algae, Water Qual. Res. J. Can., 39, 183-189. GEOTOP Publication n° 2004-0007.

Friss, A.K., Davis, T.A., Figueira, M.M., Paquette, J., Mucci, A., 2003. Influence of Bacillus subtilis cell walls and EDTA on calcite dissolution rates and crystal surface features, Environ. Sci. Technol., 37, 2376-2382. GEOTOP Publication n° 2003-0002.

Davis, T.A., Volesky, B., Mucci, A., 2003. A review of the biochemistry of heavy metal biosorption by brown algae, Water Res., 37, 4311-4330. GEOTOP Publication n° 2003-0003.

Davis, T.A., Llanes, F., Volesky, B., Diaz-Pulido, G., McCook, L., Mucci, A., 2003. A 1H-NMR study of Na alginates extracted from Sargassum spp. In relation to heavy metal biosorption, Applied Biochem and Biotechnol. Journal, 110, 75-90. GEOTOP Publication n° 2003-0004.

Gao, Y., Mucci, A., 2003. Individual and competitive adsorption of phosphate and arsenate on goethite in artificial seawater, Chem. Geol., 199, 91-109. GEOTOP Publication n° 2003-0005.

Mucci, A., Boudreau, B., Guignard, C., 2003. Diagenetic mobility of trace elements in sediments covered by a flash flood deposit: Mn, Fe, and As, Applied Geochem., 18, 1011-1026.

Davis, T.A., Llanes, F., Volesky, B., Mucci, A., 2003. Metal selectivity of Sargassum spp. and their alginates in relation to their α-L-guluronic acid content and conformation, Environm. Sci. Technol., 37, 261-267. GEOTOP Publication n° 2003-0007.

Deflandre, B., Mucci, A., Gagné, J.-P., Guignard, C., Sundby, B., 2002. Early diagenetic processes in coastal marine sediments disturbed by a catastrophic sedimentation event, Geochim. Cosmochim. Acta, 66, 2547-2558.

Leduc, J., Bilodeau, G., de Vernal, A., Mucci, A., 2002. Distribution of benthic foraminiferal populations in surface sediments of the Saguenay Fjord, before and after the 1996 flood, Palaeogeogr., Palaeclimatol., Paleoecology, 180, 207-223. GEOTOP Publication n° 2002-0003.

Gao, Y., Mucci, A., 2001. Acid base reactions, phosphate and arsenate complexation, and their competitive adsorption at the surface of goethite in 0.7M NaCl, Geochim. Cosmochim. Acta, 65, 2361-2378. GEOTOP Publication n° 2001-0002.

Anschutz, P., Sundby, B., Lefrançois, L., Luthier III, G.W., Mucci, A., 2000. Interactions between metal oxides and species of nitrogen and iodine in bioturbated marine sediments, Geochim. Cosmochim. Acta, 64, 2751-2763.

Mucci, A., Richard, L.-F., Lucotte, M., Guignard, C., 2000. The differential geochemical behaviour of arsenic and phosphorus in the water column and sediments of the Saguenay Fjord Estuary, Canada, Aquatic Geochem., 6, 293-324. GEOTOP Publication n° 2000-0002.

Saulnier, I., Mucci, A., 2000. Trace metal remobilization following the resuspension of estuarine sediments: Saguenay Fjord, Canada, Appl. Geochem., 15, 203-222.

Silverberg, N., Sundby, B., Mucci, A., Zhong, S., Arakaki, T., Hall, P., Landen, A., Tenberg, A., 2000. Remineralization of organic carbon in eastern Canadian margin sediments, Deep-Sea Res., 47, 699-731.

Mucci, A., Sundby, B., Gehlen, M., Arakaki, T., Zhong, S., Silverberg, N., 2000. The fate of carbon in continental shelf sediments of Eastern Canada: A case study, Deep-Sea Res., 47, 733-760.

St-Onge, G., Leduc, J., Bilodeau, G., de Vernal, A., Devilliers, R., Hillaire-Marcel, C., Loucheur V., Marmen, S., Mucci, A., Zhang, D., 1999. Caractérisation des sédiments récents du fjord du Saguenay (Québec) à partir de traceurs physiques, géochimiques, isotopiques et micropaléontologiques, Géographie Physique et Quaternaire, 53, 339-350. GEOTOP Publication n° 1999-0001.

Audet, Tiffany : Doctorat en sciences de la Terre
Département des sciences de la Terre et de l'atmosphère, Université du Québec à Montréal
Codirection : Anne de Vernal
Sujet de recherche : Évolution de l’hypoxie dans le chenal Laurentien, estuaire et du golfe du Saint-Laurent, selon le contenu biogénique du sédiment.

Duval, Gwenn : Maîtrise en océanographie
Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski
Codirection : André Pellerin; Gwénaëlle Chaillou, ISMER-UQAR
Sujet de recherche : Évaluation de la sulfato-réduction dans les sédiments de la zone hypoxique du Saint-Laurent

Guay, Carole-Anne : Maîtrise en océanographie
Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski
Codirection : Gwenaëlle Chaillou, ISMER-UQAR
Sujet de recherche : Impacts de la matière organique terrigène sur la chimie des eaux côtières aux hautes latitudes

Hérard, Olivier : Maîtrise en océanographie
Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski
Codirection : Gwenaëlle Chaillou, ISMER-UQAR
Sujet de recherche : Dynamique du CO2 dans le système côtier de la Baie de Kamouraska

Mirzaei, Yeganeh : Doctorat en chimie
Department of Chemistry & Biochemistry, Concordia University
Codirection : Yves Gélinas