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G7 (I) Environmental Biogeochemistry: Environmental Approaches

Monday, 25 July, 2011

MG7-O1 — 8:30-8:45
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DECLINE OF ECOSYSTEM HG LEVELS DURING THE INITIAL RECOVERY PHASE OF METAALICUS
Authors: HARRIS, Reed C.1, RUDD, John W.M.2, KELLY, Carol A.3, KRABBENHOFT, David P.4, ST. LOUIS, Vince5, HINTELMANN, Holger6, GILMOUR, Cynthia C. 7, HEYES, Andrew8, AMYOT, Marc9, BRANFIREUN, Brian10, BLANCHFIELD, Paul11, GRAYDON, Jennifer5, PATERSON, Michael11, SANDILANDS, Ken11, TATE, Michael T.4, DIMOCK, Brian6, BEATY, Ken12, BABIARZ, Christopher13
(1)Reed Harris Environmental Ltd., reed@reed-harris.com; (2) R&K Research Inc.; (3) R&K Research, Inc.; (4) US Geological Survey; (5) University of Alberta; (6) Trent University; (7) Smithsonian Environmental Research Center; (8) University of Maryland Center for Environmental Science; (9) Universite de Montreal; (10) University of Western Ontario; (11) Fisheries and Oceans Canada; (12) Fisheries and Oceans Canada (retired); (13) University of Wisconsin.
MG7-O2 — 8:45-9:00
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WATERSHED RESPONSES TO CHANGES IN MERCURY LOADING: RESULTS FROM THE TERRESTRIAL ASPECTS OF THE METAALICUS PROJECT
Authors: TATE, Michael1, SABIN, Thomas1, DEWILD, John1, ST. LOUIS, Vince2, GRAYDON, Jennifer2, BRANFIREUN, Brian3, HARRIS, Reed4, HEYES, Andrew5, LINDBERG, Steve6, SOUTHWORTH, George6
(1)U.S. Geological Survey, mttate@usgs.gov; (2) University of Alberta; (3) University of Western Ontario; (4) Reed Harris Environmental Ltd.; (5) University of Maryland; (6) ORNL (retired);
MG7-O3 — 9:00-9:15
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METAALICUS: MERCURY AND MEHG BUDGETS FOR SEVEN YEARS OF HG LOADING TO LAKE 658, ELA, ONTARIO.
Authors: GILMOUR, Cynthia1, REED, Harris2, KELLY, Carol A. Kelly3, HINTELMANN, Holger4, KRABBENHOFT, David P.5, AMYOT, Marc6, BLANCHFIELD, Paul 7, PATERSON, Michael7, RUDD, John M.W.3, TATE, Michael5, SANDILANDS, Ken7, BEATY, Ken7, LINDBERG, Steven8, SOUTHWORTH, George8, HEYES, Andrew9, ST. LOUIS, Vince10, GRAYDON, Jenny10, BABIARZ, Chris11, BRANFIREUN, Brian12, HURLEY, James P.11
(1) Smithsonian Environmental Research Center, gilmourc@si.edu; (2) Reed Harris Environmental Ltd.; (3) R&K Research, Inc.; (4) Trent U.; (5) USGS, Middleton, WI; (6) U. Montreal; (7) Canada DFO; (8) ORNL; (9) University of Maryland, Chesapeake Biological Lab; (10) U. Alberta; (11) U. Wisconsin; (12) Western Ontario;
MG7-O4 — 9:15-9:30
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RAPID DECLINES IN METHYLMERCURY PRODUCTION FROM DECREASED SULFATE DEPOSITION TO A BOREAL PEATLAND
Authors: COLEMAN WASIK, Jill K.1, ENGSTROM, Daniel R.2, MITCHELL, Carl P.J. 3, SWAIN, Edward B. 4, MONSON, Bruce A.4, BALOGH, Steven J. 5, JEREMIASON, Jeff D. 6, KOLKA, Randall K. 7, BRANFIREUN, Brian A.8, ALMENDINGER, James E. 2
(1) St. Croix Watershed Research Station/University of Minnesota, jcoleman@smm.org; (2) St. Croix Watershed Research Station; (3) University of Toronto – Scarborough; (4) Minnesota Pollution Control Agency; (5) Metropolitan Council Environmental Services; (6) Gustavus Adolphus College; (7) USDA Forest Service-Northern Research Station; (8) University of Western Ontario;
MG7-O5 — 9:30-9:45
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CHANGES IN MERCURY METHYLATION IN A BOREAL WETLAND PREVIOUSLY ENRICHED IN SULFATE: SYNERGISTIC EFFECTS OF ATMOSPHERIC DEPOSITION AND WATER-LEVEL FLUCTUATIONS
Authors: ENGSTROM, Daniel R.1, COLEMAN WASIK, Jill2, SWAIN, Edward B.3, MONSON, Bruce A.3, MITCHELL, Carl P. J.4, ALMENDINGER, James E.5, BALOGH, Steven J.6, BRANFIREUN, Brian A.7, KOLKA, Randy K.8, JEREMIASON, Jeff D.9
(1) Science Museum of Minnesota, dre@umn.edu; (2) University of Minnesota; (3) Minnesota Pollution Control Agency; (4) University of Toronto - Scarborough; (5) Science Musuem of Minnesota; (6) Metropolitan Council Environmental Services; (7) University of Western Ontario; (8) USDA Forest Service; (9) Gustavus Adolphus College.
MG7-O6 — 9:45-10:00
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MASS INDEPENDENT ISOTOPE FRACTIONATION OF MERCURY IN THE SEDIMENTS OF A SALT MARSH: CABRETTA ISLAND, GEORGIA.
Authors: DAS, RESHMI1, BIZIMIS, MICHAEL2, WILSON, ALICIA2
(1) SCHOOL OF ENVIRONMENTAL STUDIES, das.reshmi@gmail.com; (2) University of South Carolina;
MG7-O7 — 10:00-10:15
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USING SPECIES-SPECIFIC ENRICHED STABLE ISOTOPES TO ASSESS MERCURY METHYLATION AND DEMETHYLATION PATHWAYS IN EARTHWORMS EXPOSED TO MERCURY CONTAMINATED SOILS
Authors: MARTÍN-DOIMEADIOS, Rosa1, JIMENEZ MORENO, Maria1, BERZAS NEVADO, Juan José2, GUZMÁN BERNARDO, Francisco Javier1, RODRÍGUEZ-ALVÁREZ, Carolina1
(1) Universidad de Castilla-La Mancha, rosacarmen.rodriguez@uclm.es; (2) Universidad Castilla-La Mancha;
MG7-O8 — 10:15-10:30
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NEW INSIGHT ON MERCURY CYCLING IN STREAM ECOSYSTEMS FROM STUDIES IN A NORTHERN CALIFORNIA STREAM NETWORK
Authors: TSUI, Martin Tsz Ki1, FINLAY, Jacques C.2, BLUM, Joel D.1
(1) Department of Geological Sciences, University of Michigan, mtktsui@umich.edu; (2) Department of Ecology, Evolution & Behavior, University of Minnesota;
Monday, 25 July, 2011