B070
Mercury Biogeochemistry and Environmental Change

Session ID#: 71450

Session Description:
Mercury (Hg) contamination continues to be an environmental and public health concern. Processes of Hg transport, methylation, and biotic uptake shift through time and space. The goal of this session is to highlight recent scientific advances in Hg cycling in relation to environmental change. Abstracts will be considered on a variety of topics including: Hg speciation, biogeochemistry, and bioaccumulation in terrestrial, freshwater, and marine ecosystems. Papers that consider the role of environmental change, climate, ecosystem response, scale, source apportionment, food web dynamics, and biotic and abiotic controls on Hg cycling and bioaccumulation are strongly encouraged.
Index Terms:

0409 Bioavailability: chemical speciation and complexation [BIOGEOSCIENCES]
0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0461 Metals [BIOGEOSCIENCES]
3339 Ocean/atmosphere interactions [ATMOSPHERIC PROCESSES]

Primary Convener:  Michael S Bank, Institute of Marine Research, Norway, Bergen, Norway
Conveners:  Sophia Veronica Hansson, Aarhus University, Department of Bioscience, Roskilde, Denmark and Baohua Gu, Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, TN, United States
Primary Liaison:  Baohua Gu, Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, TN, United States
 
Temporal trends and factors influencing Hg levels in upper catchment boreal lakes (485330)
Martin Pilote1, Amanda S Cole2, Suzanne Couture1, Daniel Houle3, Ashu Dastoor4 and Christian Gagnon1, (1)Environment and Climate Change Canada, Aquatic Contaminants Research Division, Montreal, QC, Canada, (2)Environment and Climate Change Canada, Air Quality Research Division, Toronto, ON, Canada, (3)Environnement and Climate Change Canada, Aquatic Contaminants Research Division, Montreal, QC, Canada, (4)Environment and Climate Change Canada, Air Quality Research Division, Dorval, QC, Canada
 
Mercury accumulation in Mediterranean lean fish (487600)
Joan O Grimalt1, Marco Capodiferro2, Esther Marco3 and Eva Junque2, (1)Institute of Environmental Assessment and Water Research (IDAEA), Barcelona, Spain, (2)Institute of Environmental Assessment and Water Research (IDAEA), Environmental Chemistry, Barcelona, Spain, (3)IDAEA-CSIC, Environmental Chemistry, Barcelona, Spain
 
Use of Hg, C and N stable isotopes as tracers of mercury sources and transfer through temperate coastal marine food webs. (490540)
Nicolas Briant1, Joel Knoery2, Tiphaine Chouvelon3, Bastiena Thomas3, Emmanuel Ponzevera2, Christophe Brach-Papa4, Nicolas Savoye5, Sylvain Bérail6 and Jeroen Sonke7, (1)Nantes, France, (2)IFREMER, Plouzané, France, (3)IFREMER, Nantes, France, (4)IFREMER, La Seyne sur Mer, France, (5)EPOC, Bordeaux, France, (6)IPREM, Pau, France, (7)GET, Toulouse, France
 
Discretizing the Geochemical and Microbiological Contributions of Mercury Methylation Potential in Sediments (493174)
Heileen Hsu-Kim1, Natalia Neal-Walthall1, Udonna Ndu2, Caitlin M Gionfriddo3, Geoff Alex Christensen3 and Dwayne A Elias4, (1)Duke University, Durham, NC, United States, (2)Duke University, Durham, United States, (3)Oak Ridge National Laboratory, Oak Ridge, TN, United States, (4)Oak Ridge National Laboratory, Biosciences Division, Oak Ridge, TN, United States
 
Mercury Patterns in Permafrost Peatland Streams and Ponds (493399)
Lauren Thompson1, McKenzie Ann Kuhn1, Oliver Sonnentag2 and David Olefeldt1, (1)University of Alberta, Department of Renewable Resources, Edmonton, AB, Canada, (2)Université de Montréal, Département de Géographie, Montréal, QC, Canada
 
The interplay between land-atmosphere exchange and soil dynamics of mercury in a Swiss subalpine forest (493820)
Jen-How Huang, University of Basel, Basel, Switzerland, Stefan Osterwlalder, Louisville, CO, United States, Katrin Meusburger, Zürcherstrasse 111, Birmensdorf, Switzerland, Jorg Rinklebe, University of Wuppertal, Wuppertal, Germany, Xinbin Feng, GIG Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China and Christine Alewell, University of Basel, Environmental Geosciences, Basel, Switzerland
 
Mercury Methylation in Lake Michigan Sand Dunes (499119)
Ziming Yang1, Jared Zaporski1, Xuan Fu1, Stephanie Peters1, Megan Jamison1, Lijie Zhang2, Xujun Liang2, Michael Philben2 and Baohua Gu2, (1)Oakland University, Department of Chemistry, Rochester, MI, United States, (2)Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, TN, United States
 
New insights into the variability of atmospheric mercury concentrations and chemistry across multiple locations (Invited) (499333)
Mae Sexauer Gustin, University of Nevada Reno, Reno, NV, United States
 
Presence and absence of probable nitrogen limitation in seawater as indicators of microbial mercury transformations in the South Atlantic Ocean (501414)
Igor Zivkovic1, Natalia Bojanić2, Matthew Humphreys3, Malcolm Woodward4, Arne Bratkič5, Mladen Solic2 and Horvat Milena1, (1)Jozef Stefan Institute, Ljubljana, Slovenia, (2)Institute of Oceanography and Fisheries, Split, Croatia, (3)University of East Anglia, Norwich, United Kingdom, (4)Plymouth Marine Laboratory, Plyymouth, United Kingdom, (5)Vrije Universiteit Brussel, Elsene, Belgium
 
Observations of oxidized mercury in the U.S. Intermountain West using a modified dual-channel analyzer and automated calibration system (503443)
Lynne Gratz, Colorado College, Environmental Studies Program, Colorado Springs, CO, United States, Seth Lyman, Utah State University, Vernal, UT, United States and Tyler Elgiar, Utah State University, Logan, United States
 
Methylmercury Degradation by Methanotrophs and its Environmental Implications (505813)
Jeremy D Semrau1, Christina Kang-Yun2, Xujun Liang3, Xia Lu4, Philip Dershwitz5, Aloys Scheper6, Andrew Flatley6, Josef Lichtmanneger7, Hans Zischka7, Obulisamy Karthikeyan8, Alan A. DiSpirito9 and Baohua Gu4, (1)University of Michigan Ann Arbor, Ann Arbor, MI, United States, (2)University of Michigan Ann Arbor, Civil & Environmental Engineering, Ann Arbor, MI, United States, (3)University of Tennessee, Environmental Sciences Division, Oak Ridge, TN, United States, (4)Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, TN, United States, (5)Iowa State University, Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Ames, United States, (6)Monoclonal Antibody Core Facility & Research Group - Helmholtz Center Munich, Neuherberg, Germany, (7)Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, Neuherberg, Germany, (8)The University of Michigan, Civil & Environmental Engineering, Ann Arbor, United States, (9)Iowa State University, Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Ames, IA, United States
 
Unveiling Mercury Competitive Binding and Exchange Reactions within Natural Organic Matter and Mixed Organic Ligands using a Stepwise Reduction Approach (510249)
Xujun Liang1, Xia Lu2, Jiating Zhao3, Liyuan Liang3, Eddy Y. Zeng4 and Baohua Gu2, (1)University of Tennessee, Environmental Sciences Division, Oak Ridge, TN, United States, (2)Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, TN, United States, (3)Oak Ridge National Laboratory, Oak Ridge, TN, United States, (4)Jinan University, Guangzhou, China
 
Microbial methylation of mercury bound to the methanotrophic chalkophore, methanobactin (512247)
Baohua Gu, Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, TN, United States and Xixiang Yin, Lihong Wang, Lijie Zhang, Hongmei Chen, Xujun Liang, Xia Lu, Alan A. DiSpirito, and Jeremy Semrau
 
Isotopic Compositions of Gaseous Elemental Mercury (GEM) at the Cape Hedo Atmosphere and Aerosol Monitoring Station (CHAAMS), Japan (516371)
Akane Yamakawa1, Akinori Takami1, Yuji Takeda1, Shungo Kato2 and Yoshizumi J Kajii3, (1)National Institute of Environmental Studies, Ibaraki, Japan, (2)Tokyo Metropolitan University, Tokyo, Japan, (3)Kyoto University, Sakyo-ku Kyoto, Japan
 
Mercury Isotope Exchange Kinetics and Implications for Stable Isotope Tracer Studies (520342)
Lijie Zhang1, Xia Lu1, Xujun Liang1, Quanying Wang1, Xiangping Yin1, Eric M Pierce1 and Baohua Gu1,2, (1)Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, TN, United States, (2)University of Tennessee, Department of Biosystems Engineering and Soil Science, Knoxville, TN, United States
 
Seafood and methylmercury: speciation, models and implications for food security and implementation of the Minamata Convention (535104)
Michael S Bank, Institute of Marine Research, Norway, Bergen, Norway
 
Mercury sulfide formation from mercury(II)-thiocarboxylic acid solutions in contact with air (546296)
Jillian Cellini, University of Illinois at Chicago, Chicago, IL, United States, Alain Manceau, University Grenoble Alpes, Grenoble, France and Kathryn Nagy, Univ Illinois at Chicago, Chicago, IL, United States
 
Potential impacts of mercury released from thawing permafrost (591480)
Paul F Schuster, USGS Central Region Offices Denver, Denver, CO, United States, Kevin M Schaefer, National Snow and Ice Data Center, Cooperative Institute for Research in the Environmental Sciences, University of Colorado at Boulder, Boulder, Colorado, U.S.A, Boulder, CO, United States, Yasin Elshorbany Elshorbany, University of South Florida, Atmospheric Chemistry and Climate Laboratory, St. Petersburg, United States, Elchin Jafarov, Los Alamos National Laboratory, Computational Earth Sciences, Los Alamos, NM, United States, Robert G Striegl, USGS WRD, Boulder, CO, United States and Kimberly Wickland, US Geological Survey, Water Resources Mission Area, Boulder, CO, United States
 
Assessing Water Quality Downstream from the Former New Idria Mercury Mine (593943)
Rachel A Hohn, California State University Northridge, Northridge, CA, United States, Scott Hauswirth, California State University Northridge, Geological Sciences, Northridge, CA, United States, Byran Fuhrmann, University of California, Merced, Merced, United States, Marc Beutel, University of California, Merced, Merced, CA, United States, Danielle Bram, California State University, Northridge, Northridge, United States and Priya M Ganguli, California State University, Northridge, Northridge, CA, United States
 
The Influence of Microbial Siderophores and Anthropogenic Thiols on Mercury Transport (602139)
Benjamin Stenzler, Rui Zhang and Alexandre Poulain, University of Ottawa, Biology, Ottawa, ON, Canada
 
Assessment of mercury concentrations in fur, liver and brain tissue from necropsied southern sea otters (Enhydra lutris nereis) (619783)
Peter Scott Weiss-Penzias1, Draven Hawk2 and Robin Dunkin2, (1)University of California Santa Cruz, Santa Cruz, CA, United States, (2)University of California, Santa Cruz, Ecology and Evolutionary Biology, Santa Cruz, CA, United States
 
Mercury methylation and associated microbial communities in vegetated and unvegetated mudflat of the Ganghwa intertidal wetland, Yellow Sea (624411)
Jung-Ho Hyun1, Jisu Park1, Hyeyoun Cho1, Hyunji Lee1 and Seunghee Han2, (1)Hanyang University, Ansan, South Korea, (2)GIST, Gwangju, South Korea
 
Mercury isotopic constraints on mercury cycling across a permafrost thaw gradient in Stordalen Mire, Sweden (626331)
Maria Florencia Fahnestock, University of New Hampshire Main Campus, Durham, NH, United States, Julia G Bryce, University of New Hampshire, Department of Earth Sciences, Durham, NH, United States, Charles T Driscoll, Syracuse University, Department of Civil & Environmental Engineering, Syracuse, NY, United States, Brendan Garvey, University of New Hampshire Main Campus, Earth Science, Durham, NH, United States, Virginia Isabel Rich, Ohio State University, Columbus, OH, United States and Ruth K Varner, University of New Hampshire, Durham, NH, United States
 
Relationship of mercury methylation and demethylation potential rates to methylmercury concentrations in vegetated and unvegetated rice paddy soil (631337)
Rachel Jean Strickman, University of Washington Seattle Campus, Department of Civil and Environmental Engineering, Seattle, WA, United States, Carl P.J. Mitchell, University of Toronto, Department of Physical and Environmental Sciences, Toronto, ON, Canada, Mark C Marvin-DiPasquale, U.S. Geological Survey, Menlo Park, CA, United States and Rebecca Bergquist Neumann, University of Washington, Seattle, WA, United States
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