{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T18:19:34Z","timestamp":1787768374717,"version":"build-2784847793"},"reference-count":87,"publisher":"Public Library of Science (PLoS)","issue":"8","license":[{"start":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T00:00:00Z","timestamp":1787702400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100031479","name":"CGX Energy Inc.","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100031479","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100031480","name":"Frontera Energy Corporation","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100031480","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:p>\n                    Elevated atmospheric mercury (Hg) concentrations from artisanal gold mining increase Hg exposure in adjacent forest canopies. Although pools and fluxes of Hg and carbon (C) within environmental media are connected, it is unclear how these Hg\/C patterns may differ between areas exposed to high Hg levels and regions remote from emission sources. Here, we compare Hg\/C patterns in environmental media (foliage, leaf litter, soil, water, sediment) near artisanal gold mining sites in Guyana with 25 studies worldwide to better understand Hg movement within environmental media. Patterns of Hg\/C ratios in environmental media were similar between Guyana and globally synthesized studies, but Hg\/C values were much higher near gold mines than the global average. Adjacent to a gold mine in Guyana, Hg\/C ratios were lowest in foliage (9.8\u2009\u00b1\u20091.6 ng mg\n                    <jats:sup>-1<\/jats:sup>\n                    ) but increased in litter (26.6\u2009\u00b1\u20093.9 ng mg\n                    <jats:sup>-1<\/jats:sup>\n                    ) due to continued accumulation from the atmosphere. Mineral soil Hg\/C ratios (5.1\u2009\u00b1\u20090.2 ng mg\n                    <jats:sup>-1<\/jats:sup>\n                    ) are lower than litter and surface water (13.2\u2009\u00b1\u20092.5 ng mg\n                    <jats:sup>-1<\/jats:sup>\n                    ), and stream sediment (7.3\u2009\u00b1\u20091.1 ng mg\n                    <jats:sup>-1<\/jats:sup>\n                    ) exhibits different ratios likely reflecting a mixture of inputs from dominant flow paths (surface soils and wetlands) and erosional losses, with higher Hg\/C ratios in water compared with sediment. At the global scale, peat Hg\/C ratios (0.2\u2009\u00b1\u20090.2 ng mg\n                    <jats:sup>-1<\/jats:sup>\n                    ) were nearly identical to a global synthesis of surface water (0.3\u2009\u00b1\u20090.2 ng mg\n                    <jats:sup>-1<\/jats:sup>\n                    ), suggesting that transport of C associated with Hg from wetlands due to possible Hg accumulation from the atmosphere, is one of the primary sources of Hg to surface waters globally.\n                  <\/jats:p>","DOI":"10.1371\/journal.pone.0357021","type":"journal-article","created":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T17:35:19Z","timestamp":1787765719000},"page":"e0357021","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":0,"title":["Mercury\u2013carbon relationships in environmental media near artisanal gold mining sites in Guyana"],"prefix":"10.1371","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3814-9340","authenticated-orcid":true,"given":"Chetwynd","family":"Osborne","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D. Huy","family":"Dang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Soyini","family":"Mc Pherson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shaun A.","family":"Watmough","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2026,8,26]]},"reference":[{"issue":"2","key":"pone.0357021.ref001","first-page":"393","article-title":"Mercury sequestration in forests and peatlands: a review","volume":"32","author":"DF Grigal","year":"2003","journal-title":"J Environ Qual"},{"issue":"9","key":"pone.0357021.ref002","doi-asserted-by":"crossref","first-page":"2507","DOI":"10.5194\/bg-8-2507-2011","article-title":"Fate of mercury in tree litter during decomposition","volume":"8","author":"AK Pokharel","year":"2011","journal-title":"Biogeosciences"},{"issue":"7","key":"pone.0357021.ref003","doi-asserted-by":"crossref","first-page":"1058","DOI":"10.1029\/2017GB005840","article-title":"Mercury in active\u2010layer tundra soils of alaska: concentrations, pools, origins, and spatial distribution","volume":"32","author":"C Olson","year":"2018","journal-title":"Global Biogeochemical Cycles"},{"issue":"13","key":"pone.0357021.ref004","doi-asserted-by":"crossref","DOI":"10.1007\/s12665-016-5863-3","article-title":"Bioavailability and mobility of mercury in selected soil profiles","volume":"75","author":"S\u0141 R\u00f3\u017ca\u0144ski","year":"2016","journal-title":"Environ Earth Sci"},{"key":"pone.0357021.ref005","doi-asserted-by":"crossref","first-page":"106718","DOI":"10.1016\/j.catena.2022.106718","article-title":"Relationships between concentrations of mercury and organic carbon in soils allow the identification of Antarctic ice-free areas with enhanced deposition of the metal","volume":"220","author":"Y Wang","year":"2023","journal-title":"CATENA"},{"key":"pone.0357021.ref006","doi-asserted-by":"crossref","DOI":"10.2136\/sssaj2018.07.0281","article-title":"An assessment of traditional chemical indicators of atmospheric pollution in northern Saskatchewan forest soils","volume":"83","author":"SA Watmough","year":"2019","journal-title":"Soil Science Soc of Amer J"},{"key":"pone.0357021.ref007","doi-asserted-by":"crossref","first-page":"0288","DOI":"10.34133\/ehs.0288","article-title":"Spatial-temporal patterns of litterfall mercury concentration and flux in typical vegetation in China","volume":"11","author":"S Han","year":"2025","journal-title":"Ecosyst Heal Sustain"},{"key":"pone.0357021.ref008","doi-asserted-by":"crossref","first-page":"1613","DOI":"10.1016\/S1352-2310(03)00008-6","article-title":"Accumulation of atmospheric mercury in forest foliage","volume":"37","author":"JA Ericksen","year":"2003","journal-title":"Atmospheric Environment"},{"key":"pone.0357021.ref009","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.chemosphere.2015.11.103","article-title":"Mercury uptake into poplar leaves","volume":"146","author":"M Assad","year":"2016","journal-title":"Chemosphere"},{"key":"pone.0357021.ref010","doi-asserted-by":"crossref","first-page":"158937","DOI":"10.1016\/j.scitotenv.2022.158937","article-title":"Mercury in a birch forest in SW Europe: Deposition flux by litterfall and pools in aboveground tree biomass and soils","volume":"856","author":"M M\u00e9ndez-L\u00f3pez","year":"2023","journal-title":"Sci Total Environ"},{"key":"pone.0357021.ref011","doi-asserted-by":"crossref","first-page":"113017","DOI":"10.1016\/j.envres.2022.113017","article-title":"Distribution of mercury in foliage, litter and soil profiles in forests of the Qinling Mountains, China","volume":"211","author":"H Ma","year":"2022","journal-title":"Environ Res"},{"key":"pone.0357021.ref012","doi-asserted-by":"crossref","first-page":"161","DOI":"10.1016\/j.geoderma.2017.08.039","article-title":"Effects of soil macro- and mesofauna on litter decomposition and soil organic matter stabilization","volume":"332","author":"J Frouz","year":"2018","journal-title":"Geoderma"},{"key":"pone.0357021.ref013","doi-asserted-by":"crossref","first-page":"401","DOI":"10.1016\/j.watres.2016.07.055","article-title":"Effects of organic matter addition on methylmercury formation in capped and uncapped marine sediments","volume":"103","author":"K Ndungu","year":"2016","journal-title":"Water Res"},{"key":"pone.0357021.ref014","doi-asserted-by":"crossref","first-page":"621","DOI":"10.1007\/s00128-018-2523-1","article-title":"Mercury\u2013organic matter interactions in soils and sediments: Angel or devil?","volume":"102","author":"M He","year":"2019","journal-title":"Bull Environ Contam Toxicol"},{"key":"pone.0357021.ref015","doi-asserted-by":"crossref","DOI":"10.3389\/frym.2024.1302239","article-title":"Freshwater ecosystems: carbon sequestration champions","volume":"12","author":"B Franco-Cisterna","year":"2024","journal-title":"Front Young Minds"},{"key":"pone.0357021.ref016","doi-asserted-by":"crossref","first-page":"116369","DOI":"10.1016\/j.envpol.2020.116369","article-title":"Effect of organic matter concentration and characteristics on mercury mobilization and methylmercury production at an abandoned mine site","volume":"271","author":"CS Eckley","year":"2021","journal-title":"Environ Pollut"},{"key":"pone.0357021.ref017","doi-asserted-by":"crossref","first-page":"214","DOI":"10.1016\/j.chemosphere.2015.02.009","article-title":"Mercury methylation in sediments of a Brazilian mangrove under different vegetation covers and salinities","volume":"127","author":"DCM de Oliveira","year":"2015","journal-title":"Chemosphere"},{"key":"pone.0357021.ref018","doi-asserted-by":"crossref","first-page":"133505","DOI":"10.1016\/j.jhazmat.2024.133505","article-title":"Anthropogenic activities enhance mercury methylation in sediments of a multifunctional lake: Evidence from dissolved organic matter and mercury-methylating microorganisms","volume":"466","author":"J Wang","year":"2024","journal-title":"J Hazard Mater"},{"issue":"1","key":"pone.0357021.ref019","doi-asserted-by":"crossref","first-page":"559","DOI":"10.1038\/s41467-022-27997-3","article-title":"Amazon forests capture high levels of atmospheric mercury pollution from artisanal gold mining","volume":"13","author":"JR Gerson","year":"2022","journal-title":"Nat Commun"},{"issue":"1","key":"pone.0357021.ref020","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1139\/a01-013","article-title":"Inputs and outputs of mercury from terrestrial watersheds: a review","volume":"10","author":"DF Grigal","year":"2002","journal-title":"Environ Rev"},{"issue":"12","key":"pone.0357021.ref021","doi-asserted-by":"crossref","DOI":"10.1029\/2011WR010977","article-title":"Controls on stream water dissolved mercury in three mid\u2010Appalachian forested headwater catchments","volume":"47","author":"AL Riscassi","year":"2011","journal-title":"Water Resources Research"},{"issue":"6","key":"pone.0357021.ref022","doi-asserted-by":"crossref","first-page":"1508","DOI":"10.1029\/2018JG004896","article-title":"Global meta\u2010analysis on the relationship between mercury and dissolved organic carbon in freshwater environments","volume":"124","author":"RA Lavoie","year":"2019","journal-title":"JGR Biogeosciences"},{"key":"pone.0357021.ref023","doi-asserted-by":"crossref","first-page":"141","DOI":"10.1016\/j.scitotenv.2018.07.452","article-title":"Tree species affects the concentration of total mercury (Hg) in forest soils: evidence from a forest soil inventory in Poland","volume":"647","author":"P Gruba","year":"2019","journal-title":"Sci Total Environ"},{"key":"pone.0357021.ref024","unstructured":"Natural Earth. Admin 0 \u2013 Countries. https:\/\/www.naturalearthdata.com\/downloads\/10m-cultural-vectors\/10m-admin-0-countries\/. 2026. Accessed 2026 May 14."},{"key":"pone.0357021.ref025","article-title":"Environmental contamination associated with artisanal gold mining in Guyana","author":"C Osborne","year":"2025"},{"key":"pone.0357021.ref026","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1080\/15320383.2026.2631049","article-title":"Characterizing mercury and metal concentrations in soil and sediment within gold mined areas of Guyana","author":"C Osborne","year":"2026","journal-title":"Soil and Sediment Contamination: An International Journal"},{"key":"pone.0357021.ref027","unstructured":"GLSC. Guyana national land use plan. Georgetown. 2013. https:\/\/glsc.gov.gy\/wp-content\/uploads\/2017\/05\/National-Land-Use-Plan-Final-Oct-2013.pdf"},{"key":"pone.0357021.ref028","unstructured":"Ott N. The influence of tree species litterfall on soil chemistry and implications for modelling soil recovery from acidification. Trent University. 2021."},{"key":"pone.0357021.ref029","doi-asserted-by":"crossref","first-page":"107554","DOI":"10.1016\/j.ecolind.2021.107554","article-title":"Using plant litter decomposition as an indicator of ecosystem response to soil contamination","volume":"125","author":"A Lecerf","year":"2021","journal-title":"Ecol Indic"},{"issue":"18","key":"pone.0357021.ref030","doi-asserted-by":"crossref","first-page":"11915","DOI":"10.5194\/acp-16-11915-2016","article-title":"Atmospheric mercury concentrations observed at ground-based monitoring sites globally distributed in the framework of the GMOS network","volume":"16","author":"F Sprovieri","year":"2016","journal-title":"Atmos Chem Phys"},{"key":"pone.0357021.ref031","doi-asserted-by":"crossref","first-page":"101","DOI":"10.1023\/A:1008119611481","article-title":"Loss on ignition as a method for estimating organic and carbonate content in sediments: reproducibility and comparability of results","volume":"25","author":"O Heiri","year":"2001","journal-title":"J Paleolimnol"},{"issue":"4","key":"pone.0357021.ref032","doi-asserted-by":"crossref","first-page":"604","DOI":"10.1111\/ejss.12558","article-title":"Converting loss-on-ignition to organic carbon content in arable topsoil: pitfalls and proposed procedure","volume":"69","author":"JL Jensen","year":"2018","journal-title":"Eur J Soil Sci"},{"key":"pone.0357021.ref033","doi-asserted-by":"crossref","first-page":"302","DOI":"10.1016\/j.marchem.2014.10.005","article-title":"Organic matter - A key factor in controlling mercury distribution in estuarine sediment","volume":"173","author":"P Chakraborty","year":"2015","journal-title":"Mar Chem"},{"issue":"9","key":"pone.0357021.ref034","doi-asserted-by":"crossref","first-page":"2094","DOI":"10.1016\/0043-1354(95)00015-D","article-title":"The relationship between metal concentration and organic matter in sediments and metal concentration in the aquatic macrophyte Eriocaulon septangulare","volume":"29","author":"M Coquery","year":"1995","journal-title":"Water Research"},{"key":"pone.0357021.ref035","doi-asserted-by":"crossref","first-page":"30","DOI":"10.1016\/j.ecss.2017.12.005","article-title":"Mercury in litterfall and sediment using elemental and isotopic composition of carbon and nitrogen in the mangrove of Southeastern Brazil","volume":"202","author":"CP Fragoso","year":"2018","journal-title":"Estuarine, Coastal and Shelf Science"},{"key":"pone.0357021.ref036","doi-asserted-by":"crossref","first-page":"110858","DOI":"10.1016\/j.jenvman.2020.110858","article-title":"Litterfall Hg deposition to an oak forest soil from southwestern Europe","volume":"269","author":"A G\u00f3mez-Armesto","year":"2020","journal-title":"J Environ Manage"},{"issue":"8","key":"pone.0357021.ref037","doi-asserted-by":"crossref","first-page":"1720","DOI":"10.1002\/etc.1896","article-title":"Mercury in litterfall and upper soil horizons in forested ecosystems in Vermont, USA","volume":"31","author":"JI Juillerat","year":"2012","journal-title":"Environ Toxicol Chem"},{"key":"pone.0357021.ref038","doi-asserted-by":"crossref","first-page":"714","DOI":"10.1016\/j.scitotenv.2014.07.036","article-title":"Mercury concentrations in forest soils and stream waters in northeast and south China","volume":"496","author":"Y Luo","year":"2014","journal-title":"Sci Total Environ"},{"issue":"5","key":"pone.0357021.ref039","doi-asserted-by":"crossref","first-page":"765","DOI":"10.5194\/bg-6-765-2009","article-title":"Mercury concentrations and pools in four Sierra Nevada forest sites, and relationships to organic carbon and nitrogen","volume":"6","author":"D Obrist","year":"2009","journal-title":"Biogeosciences"},{"issue":"2","key":"pone.0357021.ref040","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1007\/s00244-024-01051-3","article-title":"Global patterns of metal and other element enrichment in bog and fen peatlands","volume":"86","author":"C Osborne","year":"2024","journal-title":"Arch Environ Contam Toxicol"},{"issue":"11","key":"pone.0357021.ref041","doi-asserted-by":"crossref","first-page":"1900","DOI":"10.1016\/j.apgeochem.2006.08.015","article-title":"Relationship between organic matter and mercury in recent lake sediment: The physical\u2013geochemical aspects","volume":"21","author":"H Sanei","year":"2006","journal-title":"Applied Geochemistry"},{"issue":"4","key":"pone.0357021.ref042","doi-asserted-by":"crossref","DOI":"10.1371\/journal.pone.0196293","article-title":"Concentrations and content of mercury in bark, wood, and leaves in hardwoods and conifers in four forested sites in the northeastern USA","volume":"13","author":"Y Yang","year":"2018","journal-title":"PLoS One"},{"issue":"6","key":"pone.0357021.ref043","doi-asserted-by":"crossref","first-page":"479","DOI":"10.1080\/15320380500263675","article-title":"Heavy metals in sediments of the gold mining impacted Pra River basin, Ghana, West Africa","volume":"14","author":"AK Donkor","year":"2005","journal-title":"Soil Sediment Contam"},{"issue":"20","key":"pone.0357021.ref044","first-page":"11573","article-title":"Mercury Isotopic Fractionation during Pedogenesis in a Tropical Forest Soil Catena (French Guiana): Deciphering the Impact of Historical Gold Mining","volume":"52","author":"S Gu\u00e9dron","year":"2018","journal-title":"Environ Sci Technol"},{"issue":"5","key":"pone.0357021.ref045","doi-asserted-by":"crossref","first-page":"534","DOI":"10.1080\/10934529.2011.551745","article-title":"Relationship between sediment clay minerals and total mercury","volume":"46","author":"M Kongchum","year":"2011","journal-title":"J Environ Sci Health A Tox Hazard Subst Environ Eng"},{"key":"pone.0357021.ref046","doi-asserted-by":"crossref","first-page":"1289","DOI":"10.1016\/j.chemosphere.2014.09.044","article-title":"Speciation and bioavailability of mercury in sediments impacted by gold mining in Colombia","volume":"119","author":"J Pinedo-Hern\u00e1ndez","year":"2015","journal-title":"Chemosphere"},{"issue":"2","key":"pone.0357021.ref047","doi-asserted-by":"crossref","first-page":"181","DOI":"10.3390\/pollutants3020014","article-title":"Mercury accumulation in food crops and phytoremediation potential of wild plants thriving in artisanal and small-scale gold mining areas in Uganda","volume":"3","author":"JE Ssenku","year":"2023","journal-title":"Pollutants"},{"issue":"7","key":"pone.0357021.ref048","doi-asserted-by":"crossref","DOI":"10.1007\/s42452-020-3008-5","article-title":"Distribution of total and organic mercury in soils around an artisanal and small-scale gold mining area in West Java, Indonesia","volume":"2","author":"T Tomiyasu","year":"2020","journal-title":"SN Appl Sci"},{"issue":"5","key":"pone.0357021.ref049","doi-asserted-by":"crossref","DOI":"10.1002\/ecy.3666","article-title":"Chemistry of surface water, precipitation, throughfall, leaves, sediment, soil, and air near a gold mining region in Peru","volume":"103","author":"JR Gerson","year":"2022","journal-title":"Ecology"},{"issue":"4","key":"pone.0357021.ref050","doi-asserted-by":"crossref","first-page":"1","DOI":"10.21014\/actaimeko.v14i4.2133","article-title":"Analytical method validation for total mercury quantification in sediments using a Direct Mercury Analyzer","volume":"14","author":"ADLA Esquivel Hernandez","year":"2025","journal-title":"Acta IMEKO"},{"key":"pone.0357021.ref051","author":"H Cantwell","year":"2025","journal-title":"Eurachem guide: The fitness for purpose of analytical methods \u2013 A laboratory guide to method validation and related topics"},{"issue":"5","key":"pone.0357021.ref052","doi-asserted-by":"crossref","first-page":"835","DOI":"10.1351\/pac200274050835","article-title":"Harmonized guidelines for single-laboratory validation of methods of analysis (IUPAC Technical Report)","volume":"74","author":"M Thompson","year":"2002","journal-title":"Pure and Applied Chemistry"},{"issue":"5","key":"pone.0357021.ref053","doi-asserted-by":"crossref","first-page":"570","DOI":"10.1007\/s00128-015-1521-9","article-title":"The influence of sample drying procedures on mercury concentrations analyzed in soils","volume":"94","author":"M Hojdov\u00e1","year":"2015","journal-title":"Bull Environ Contam Toxicol"},{"key":"pone.0357021.ref054","unstructured":"R Core Team. R: A language and environment for statistical computing. https:\/\/www.r-project.org\/. 2021."},{"key":"pone.0357021.ref055","doi-asserted-by":"crossref","DOI":"10.1007\/978-3-319-24277-4","volume-title":"ggplot2: Elegant graphics for data analysis","author":"H Wickham","year":"2016"},{"key":"pone.0357021.ref056","author":"CO Wilke","year":"2020","journal-title":"cowplot: Streamlined plot theme and plot annotations for \u201cggplot2\u201d"},{"key":"pone.0357021.ref057","unstructured":"Lenth RV. Emmeans: Estimated marginal means, aka least-squares means. https:\/\/cran.r-project.org\/package=emmeans. 2025."},{"key":"pone.0357021.ref058","volume-title":"Biostatistical analysis","author":"JH Zar","year":"2010","edition":"5"},{"issue":"6","key":"pone.0357021.ref059","doi-asserted-by":"crossref","first-page":"1108","DOI":"10.3390\/f14061108","article-title":"Risk assessments of plant leaf and soil mercury pollution in different functional areas of Changchun City","volume":"14","author":"J Pan","year":"2023","journal-title":"Forests"},{"issue":"6","key":"pone.0357021.ref060","doi-asserted-by":"crossref","first-page":"599","DOI":"10.1007\/s10661-026-15455-2","article-title":"Atmospheric Hg monitoring using passive samplers and moss bags within gold mined areas of Guyana","volume":"198","author":"C Osborne","year":"2026","journal-title":"Environ Monit Assess"},{"issue":"5","key":"pone.0357021.ref061","doi-asserted-by":"crossref","first-page":"1341","DOI":"10.1890\/06-1697.1","article-title":"Mercury cycling in litter and soil in different forest types in the Adirondack region, New York, USA","volume":"17","author":"JD Demers","year":"2007","journal-title":"Ecol Appl"},{"key":"pone.0357021.ref062","doi-asserted-by":"crossref","first-page":"118449","DOI":"10.1016\/j.envpol.2021.118449","article-title":"Increase of litterfall mercury input and sequestration during decomposition with a montane elevation in Southwest China","volume":"292","author":"X Li","year":"2022","journal-title":"Environ Pollut"},{"issue":"8","key":"pone.0357021.ref063","doi-asserted-by":"crossref","first-page":"2590","DOI":"10.1029\/2018JG004415","article-title":"Deposition and fate of mercury in litterfall, litter, and soil in coniferous and broad\u2010leaved forests","volume":"123","author":"J Zhou","year":"2018","journal-title":"JGR Biogeosciences"},{"issue":"14","key":"pone.0357021.ref064","doi-asserted-by":"crossref","first-page":"8739","DOI":"10.1021\/acs.est.0c00950","article-title":"Stable mercury isotope transition during postdepositional decomposition of biomass in a forest ecosystem over five centuries","volume":"54","author":"W Yuan","year":"2020","journal-title":"Environ Sci Technol"},{"key":"pone.0357021.ref065","doi-asserted-by":"crossref","first-page":"128","DOI":"10.1186\/s12302-020-00401-x","article-title":"Mercury in the terrestrial environment: a review","volume":"32","author":"B Gworek","year":"2020","journal-title":"Environ Sci Eur"},{"issue":"23","key":"pone.0357021.ref066","doi-asserted-by":"crossref","first-page":"5034","DOI":"10.1021\/es025572t","article-title":"Reactivity and mobility of new and old mercury deposition in a boreal forest ecosystem during the first year of the METAALICUS study","volume":"36","author":"H Hintelmann","year":"2002","journal-title":"Environ Sci Technol"},{"issue":"7","key":"pone.0357021.ref067","doi-asserted-by":"crossref","first-page":"1691","DOI":"10.1016\/j.scitotenv.2009.12.008","article-title":"Gaseous elemental mercury emissions and CO(2) respiration rates in terrestrial soils under controlled aerobic and anaerobic laboratory conditions","volume":"408","author":"D Obrist","year":"2010","journal-title":"Sci Total Environ"},{"key":"pone.0357021.ref068","doi-asserted-by":"crossref","first-page":"111507","DOI":"10.1016\/j.ecoenv.2020.111507","article-title":"Geochemical cycle of mercury associated with wet deposition and inflows in a subalpine wetland","volume":"208","author":"Y Ning","year":"2021","journal-title":"Ecotoxicol Environ Saf"},{"key":"pone.0357021.ref069","doi-asserted-by":"crossref","first-page":"2351","DOI":"10.1029\/2018JD029373","article-title":"Characterization and quantification of atmospheric mercury sources using passive air samplers","volume":"124","author":"DS McLagan","year":"2019","journal-title":"J Geophys Res Atmos"},{"key":"pone.0357021.ref070","doi-asserted-by":"crossref","first-page":"176466","DOI":"10.1016\/j.scitotenv.2024.176466","article-title":"Organic matter is a predominant control on total mercury concentration of near-surface lake sediments across a boreal to low Arctic tundra transect in northern Canada","volume":"954","author":"JM Galloway","year":"2024","journal-title":"Sci Total Environ"},{"issue":"3","key":"pone.0357021.ref071","doi-asserted-by":"crossref","first-page":"505","DOI":"10.1111\/nph.13363","article-title":"Redefining fine roots improves understanding of below-ground contributions to terrestrial biosphere processes","volume":"207","author":"ML McCormack","year":"2015","journal-title":"New Phytol"},{"issue":"19","key":"pone.0357021.ref072","doi-asserted-by":"crossref","first-page":"5010","DOI":"10.1021\/es049800q","article-title":"Methylmercury and total mercury in plant litter decomposing in upland forests and flooded landscapes","volume":"38","author":"BD Hall","year":"2004","journal-title":"Environ Sci Technol"},{"key":"pone.0357021.ref073","doi-asserted-by":"crossref","DOI":"10.1016\/j.soilbio.2016.08.011","article-title":"The macromolecular organic composition of plant and microbial residues as inputs to soil organic matter: Fourteen years on","volume":"105","author":"I K\u00f6gel-Knabner","year":"2017","journal-title":"Soil Biology and Biochemistry"},{"issue":"1","key":"pone.0357021.ref074","doi-asserted-by":"crossref","first-page":"12","DOI":"10.1111\/gcb.14482","article-title":"Pathways of mineral-associated soil organic matter formation: Integrating the role of plant carbon source, chemistry, and point of entry","volume":"25","author":"NW Sokol","year":"2019","journal-title":"Glob Chang Biol"},{"key":"pone.0357021.ref075","doi-asserted-by":"crossref","first-page":"46","DOI":"10.1038\/s41561-018-0258-6","article-title":"Microbial formation of stable soil carbon is more efficient from belowground than aboveground input","volume":"12","author":"NW Sokol","year":"2019","journal-title":"Nature Geoscience"},{"key":"pone.0357021.ref076","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1016\/j.envpol.2016.04.101","article-title":"Transport mechanisms of soil-bound mercury in the erosion process during rainfall-runoff events","volume":"215","author":"Y Zheng","year":"2016","journal-title":"Environ Pollut"},{"key":"pone.0357021.ref077","doi-asserted-by":"crossref","first-page":"183","DOI":"10.1016\/j.gexplo.2007.04.011","article-title":"Abandoned mine sites as a source of contamination by heavy metals: A case study in a semi-arid zone","volume":"96","author":"MC Navarro","year":"2008","journal-title":"Journal of Geochemical Exploration"},{"issue":"3","key":"pone.0357021.ref078","doi-asserted-by":"crossref","first-page":"619","DOI":"10.5194\/bg-20-619-2023","article-title":"Seasonal variation of mercury concentration of ancient olive groves of Lebanon","volume":"20","author":"N Tabaja","year":"2023","journal-title":"Biogeosciences"},{"key":"pone.0357021.ref079","doi-asserted-by":"crossref","first-page":"106337","DOI":"10.1016\/j.gexplo.2019.106337","article-title":"Mercury distribution in the foliage and soil profiles of a subtropical forest: Process for mercury retention in soils","volume":"205","author":"B Du","year":"2019","journal-title":"Journal of Geochemical Exploration"},{"key":"pone.0357021.ref080","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1007\/s10646-004-6259-9","article-title":"Estimation and mapping of wet and dry mercury deposition across northeastern North America","volume":"14","author":"EK Miller","year":"2005","journal-title":"Ecotoxicology"},{"key":"pone.0357021.ref081","article-title":"Mercury deposition in the Adirondacks: A comparison between precipitation and throughfall","volume":"42","author":"HD Choi","year":"2008","journal-title":"Atmospheric Environment"},{"key":"pone.0357021.ref082","doi-asserted-by":"crossref","first-page":"117467","DOI":"10.1016\/j.envpol.2021.117467","article-title":"Mercury vertical and horizontal concentrations in agricultural soils of a historically contaminated site: Role of soil properties, chemical loading, and cultivated plant species in driving its mobility","volume":"285","author":"C Morosini","year":"2021","journal-title":"Environ Pollut"},{"issue":"2","key":"pone.0357021.ref083","doi-asserted-by":"crossref","first-page":"825","DOI":"10.1002\/jgrg.20066","article-title":"Legacy mercury and stoichiometry with C, N, and S in soil, pore water, and stream water across the upland\u2010wetland interface: The influence of hydrogeologic setting","volume":"118","author":"JD Demers","year":"2013","journal-title":"JGR Biogeosciences"},{"issue":"14","key":"pone.0357021.ref084","doi-asserted-by":"crossref","first-page":"8187","DOI":"10.1021\/acs.est.9b01502","article-title":"Microbial biosynthesis of thiol compounds: implications for speciation, cellular uptake, and methylation of Hg(II)","volume":"53","author":"GA Adediran","year":"2019","journal-title":"Environ Sci Technol"},{"key":"pone.0357021.ref085","doi-asserted-by":"crossref","first-page":"102235","DOI":"10.1016\/j.pocean.2019.102235","article-title":"Mercury geochemistry of deep-sea sediment cores from the Kuril area, northwest Pacific","volume":"180","author":"KI Aksentov","year":"2020","journal-title":"Prog Oceanogr"},{"issue":"1","key":"pone.0357021.ref086","doi-asserted-by":"crossref","first-page":"46","DOI":"10.1016\/j.envpol.2007.12.005","article-title":"Wetland influence on mercury fate and transport in a temperate forested watershed","volume":"154","author":"P Selvendiran","year":"2008","journal-title":"Environ Pollut"},{"key":"pone.0357021.ref087","author":"C Osborne","year":"2026","journal-title":"Mercury\u2013carbon relationships in environmental media near artisanal gold mining sites in Guyana. 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