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Andrew Heyes
Researcher at University of Maryland Center for Environmental Science
Publications - 46
Citations - 4521
Andrew Heyes is an academic researcher from University of Maryland Center for Environmental Science. The author has contributed to research in topics: Mercury (element) & Methylmercury. The author has an hindex of 26, co-authored 45 publications receiving 4167 citations. Previous affiliations of Andrew Heyes include McGill University & United States Geological Survey.
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Journal ArticleDOI
Sulfide Controls on Mercury Speciation and Bioavailability to Methylating Bacteria in Sediment Pore Waters
TL;DR: In this paper, a chemical equilibrium model for Hg complexation in sediments with sulfidic pore waters is presented to explain observed relationships between pore water sulfide, dissolved inorganic Hg (HgD), and bulk methylmercury (MeHg) in surficial sediments of two biogeochemically different ecosystems, the Florida Everglades and Patuxent River, MD.
Geochemical and biological controls over methylmercury production and degradation in aquatic ecosystems
TL;DR: In this paper, the authors discuss the more salient recent AdvancCll in the understanding of the controls of net CH3Hg formation in Datural systems and provide a synthesis of the variability in the methylation response to Hg inputs across ecosystems.
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Whole-ecosystem study shows rapid fish-mercury response to changes in mercury deposition
R. Harris,John W. M. Rudd,Marc Amyot,Christopher L. Babiarz,Ken G. Beaty,Paul J. Blanchfield,R.A. Bodaly,Brian A. Branfireun,Cynthia C. Gilmour,Jennifer A. Graydon,Andrew Heyes,Holger Hintelmann,James P. Hurley,Carol A. Kelly,David P. Krabbenhoft,Steve E. Lindberg,Robert P. Mason,Michael J. Paterson,Cheryl L. Podemski,Art Robinson,Ken A. Sandilands,George R. Southworth,Vincent L. St. Louis,Michael T. Tate +23 more
TL;DR: Mercury emissions reductions will yield rapid (years) reductions in fish methylmercury concentrations and will yield concomitant reductions in risk, however, a full response will be delayed by the gradual export of mercury stored in watersheds.
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Increases in Fluxes of Greenhouse Gases and Methyl Mercury following Flooding of an Experimental Reservoir
C. A. Kelly,John W. M. Rudd,R.A. Bodaly,N. P. Roulet,V. L. St. Louis,Andrew Heyes,Tim R. Moore,S. L. Schiff,Ramon Aravena,K. J. Scott,B. Dyck,R. Harris,B. Warner,Grant C. Edwards +13 more
TL;DR: Experimental flooding of a boreal forest wetland caused the wetland to change from being a small, natural carbon sink, with respect to the atmosphere, to a large source of +130 g of C m-2 yr-1 as mentioned in this paper.
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Reactivity and Mobility of New and Old Mercury Deposition in a Boreal Forest Ecosystem during the First Year of the METAALICUS Study
Holger Hintelmann,R. Harris,Andrew Heyes,James P. Hurley,Carol A. Kelly,David P. Krabbenhoft,Steve E. Lindberg,John W. M. Rudd,Karen J. Scott,Vincent L. St. Louis +9 more
TL;DR: The initial mobility of mercury received through small rain events or dry deposition decreased markedly in a relatively short time period, suggesting that mercury levels in terrestrial runoff may respond slowly to changes in mercury deposition rates.