Artificial Lake Expansion Amplifies Mercury Pollution from Gold Mining

Overview

Journal Sci Adv

Specialties Biology
Science

Date 2020 Nov 28

PMID 33246963

Citations 8

Authors

Jacqueline R Gerson

Simon N Topp

Claudia M Vega

John R Gardner

Xiao Yang

Luis E Fernandez

Emily S Bernhardt

Tamlin M Pavelsky

Affiliations

Soon will be listed here.

Abstract

Artisanal and small-scale gold mining (ASGM) is the largest global source of anthropogenic mercury emissions. However, little is known about how effectively mercury released from ASGM is converted into the bioavailable form of methylmercury in ASGM-altered landscapes. Through examination of ASGM-impacted river basins in Peru, we show that lake area in heavily mined watersheds has increased by 670% between 1985 and 2018 and that lakes in this area convert mercury into methylmercury at net rates five to seven times greater than rivers. These results suggest that synergistic increases in lake area and mercury loading associated with ASGM are substantially increasing exposure risk for people and wildlife. Similarly, marked increases in lake area in other ASGM hot spots suggest that "hydroscape" (hydrological landscape) alteration is an important and previously unrecognized component of mercury risk from ASGM.

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References

Dethier E, Sartain S, Lutz D . Heightened levels and seasonal inversion of riverine suspended sediment in a tropical biodiversity hot spot due to artisanal gold mining. Proc Natl Acad Sci U S A. 2019; 116(48):23936-23941. PMC: 6883808. DOI: 10.1073/pnas.1907842116. View

Eagles-Smith C, Silbergeld E, Basu N, Bustamante P, Diaz-Barriga F, Hopkins W . Modulators of mercury risk to wildlife and humans in the context of rapid global change. Ambio. 2018; 47(2):170-197. PMC: 5794686. DOI: 10.1007/s13280-017-1011-x. View

Sanchez J, Carnero A, Rivera E, Rosales L, Baldeviano G, Asencios J . Unstable Malaria Transmission in the Southern Peruvian Amazon and Its Association with Gold Mining, Madre de Dios, 2001-2012. Am J Trop Med Hyg. 2016; 96(2):304-311. PMC: 5303028. DOI: 10.4269/ajtmh.16-0030. View

Todorova S, Driscoll Jr C, Matthews D, Effler S, Hines M, Henry E . Evidence for regulation of monomethyl mercury by nitrate in a seasonally stratified, eutrophic lake. Environ Sci Technol. 2009; 43(17):6572-8. DOI: 10.1021/es900887b. View

Moreno-Brush M, Rydberg J, Gamboa N, Storch I, Biester H . Is mercury from small-scale gold mining prevalent in the southeastern Peruvian Amazon?. Environ Pollut. 2016; 218:150-159. DOI: 10.1016/j.envpol.2016.08.038. View

Diringer S, Feingold B, Ortiz E, Gallis J, Araujo-Flores J, Berky A . River transport of mercury from artisanal and small-scale gold mining and risks for dietary mercury exposure in Madre de Dios, Peru. Environ Sci Process Impacts. 2015; 17(2):478-87. DOI: 10.1039/c4em00567h. View

Pekel J, Cottam A, Gorelick N, Belward A . High-resolution mapping of global surface water and its long-term changes. Nature. 2016; 540(7633):418-422. DOI: 10.1038/nature20584. View

Hansen M, Potapov P, MOORE R, Hancher M, Turubanova S, Tyukavina A . High-resolution global maps of 21st-century forest cover change. Science. 2013; 342(6160):850-3. DOI: 10.1126/science.1244693. View

Diringer S, Berky A, Marani M, Ortiz E, Karatum O, Plata D . Deforestation Due to Artisanal and Small-Scale Gold Mining Exacerbates Soil and Mercury Mobilization in Madre de Dios, Peru. Environ Sci Technol. 2019; 54(1):286-296. PMC: 7244384. DOI: 10.1021/acs.est.9b06620. View

10.

Driscoll C, Mason R, Chan H, Jacob D, Pirrone N . Mercury as a global pollutant: sources, pathways, and effects. Environ Sci Technol. 2013; 47(10):4967-83. PMC: 3701261. DOI: 10.1021/es305071v. View

11.

Scheuhammer A, Meyer M, Sandheinrich M, Murray M . Effects of environmental methylmercury on the health of wild birds, mammals, and fish. Ambio. 2007; 36(1):12-8. DOI: 10.1579/0044-7447(2007)36[12:eoemot]2.0.co;2. View

12.

Bruno D, Ruban D, Tiess G, Pirrone N, Perrotta P, Mikhailenko A . Artisanal and small-scale gold mining, meandering tropical rivers, and geological heritage: Evidence from Brazil and Indonesia. Sci Total Environ. 2020; 715:136907. DOI: 10.1016/j.scitotenv.2020.136907. View

13.

Garcia-Sanchez A, Contreras F, Adams M, Santos F . Atmospheric mercury emissions from polluted gold mining areas (Venezuela). Environ Geochem Health. 2006; 28(6):529-40. DOI: 10.1007/s10653-006-9049-x. View

14.

Allen G, Pavelsky T . Global extent of rivers and streams. Science. 2018; 361(6402):585-588. DOI: 10.1126/science.aat0636. View

15.

Asner G, Llactayo W, Tupayachi R, Luna E . Elevated rates of gold mining in the Amazon revealed through high-resolution monitoring. Proc Natl Acad Sci U S A. 2013; 110(46):18454-9. PMC: 3832012. DOI: 10.1073/pnas.1318271110. View

16.

Fleck J, Marvin-DiPasquale M, Eagles-Smith C, Ackerman J, Lutz M, Tate M . Mercury and methylmercury in aquatic sediment across western North America. Sci Total Environ. 2016; 568:727-738. DOI: 10.1016/j.scitotenv.2016.03.044. View

17.

Ha E, Basu N, Bose-OReilly S, Dorea J, McSorley E, Sakamoto M . Current progress on understanding the impact of mercury on human health. Environ Res. 2016; 152:419-433. DOI: 10.1016/j.envres.2016.06.042. View

18.

Bose-OReilly S, Schierl R, Nowak D, Siebert U, William J, Owi F . A preliminary study on health effects in villagers exposed to mercury in a small-scale artisanal gold mining area in Indonesia. Environ Res. 2016; 149:274-281. DOI: 10.1016/j.envres.2016.04.007. View

19.

Imura N, Sukegawa E, Pan S, Nagao K, Kim J, Kwan T . Chemical methylation of inorganic mercury with methylcobalamin, a vitamin B12 analog. Science. 1971; 172(3989):1248-9. DOI: 10.1126/science.172.3989.1248. View