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ENVIRONMENTAL FACTORS AFFECTING THE FORMATION OF METHYLMERCURY IN LOW pH LAKES

1990; Wiley; Volume: 9; Issue: 7 Linguagem: Inglês

10.1897/1552-8618(1990)9[853

ISSN

1552-8618

Autores

Michael R. Winfrey, John W. M. Rudd,

Tópico(s)

Water Resources and Management

Resumo

Environmental Toxicology and ChemistryVolume 9, Issue 7 p. 853-869 ReviewFree Access Environmental factors affecting the formation of methylmercury in low pH lakes Michael R. Winfrey, Corresponding Author Michael R. Winfrey River Studies Center, Department of Biology and Microbiology, University of Wisconsin–La Crosse, La Crosse, WI 54601River Studies Center, Department of Biology and Microbiology, University of Wisconsin–La Crosse, La Crosse, WI 54601Search for more papers by this authorJohn W. M. Rudd, John W. M. Rudd Freshwater Institute, Central and Arctic Region, Department of Fisheries and Oceans, Winnipeg, Manitoba R3T 2N6, CanadaSearch for more papers by this author Michael R. Winfrey, Corresponding Author Michael R. Winfrey River Studies Center, Department of Biology and Microbiology, University of Wisconsin–La Crosse, La Crosse, WI 54601River Studies Center, Department of Biology and Microbiology, University of Wisconsin–La Crosse, La Crosse, WI 54601Search for more papers by this authorJohn W. M. Rudd, John W. M. Rudd Freshwater Institute, Central and Arctic Region, Department of Fisheries and Oceans, Winnipeg, Manitoba R3T 2N6, CanadaSearch for more papers by this author First published: July 1990 https://doi.org/10.1002/etc.5620090705Citations: 269AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Recent studies have demonstrated elevated levels of mercury in fish from remote, low alkalinity and low pH lakes. The mechanisms of this enhanced bioaccumulation are poorly understood, but the amount of methylmercury produced in a lake can play a major role. Decreased pH stimulates methylmercury production at the sediment-water interface and possibly in the aerobic water column. Decreased pH also decreases loss of volatile mercury from lake water and increases mercury binding to particulates in water – factors that may increase methylation at low pH by enhancing the bioavailability of mercury for methylation. In anoxic subsurface sediments, decreased pH decreases the rate of mercury methylation, suggesting that methylmercury formation in the water column and at the sediment-water interface may be most important in acidified lakes. Sulfate-reducing bacteria are important mercury methylators in acidified lakes. Whether enhanced sulfate reduction stimulates methylmercury production in low pH lakes is presently unclear, although most of the available data do not support this hypothesis. References 1 Scheider, W.A., D.S. Jeffries and P.J. Dillon. 1979. Effects of acidic precipitation on Precambrian freshwaters in southern Ontario. J. Great Lakes Res. 5: 45–51. 10.1016/S0380-1330(79)72126-5 CASGoogle Scholar 2 Suns, K., C. Curry and D. Russel. 1980. The effects of water quality and morphometric parameters on mercury uptake by yearling yellow perch. Technical Report LTS 80–1. Ontario Ministry of the Environment, Rexdale, Ontario. Google Scholar 3 Akielazek, J.J. and T.A. Haines. 1981. Mercury in the muscle tissue of fish from three northern Maine lakes. Bull. Environ. Contam. Toxicol. 27: 201–208. 10.1007/BF01611008 PubMedWeb of Science®Google Scholar 4 Sloan, R. and C.L. Schofield. 1983. Mercury levels in brook trout (Salvelinus fontinalis) from selected acid and limed Adirondack lakes. Northeast. Environ. Sci. 2: 165–170. CASGoogle Scholar 5 Wren, C.D. and H.R. MacCrimmon. 1983. Mercury levels in the sunfish, Lepomis gibbosus, relative to pH and other environmental variables of Precambrian Shield lakes. Can. J. Fish. Aquat. Sci. 40: 1737–1744. 10.1139/f83-201 CASWeb of Science®Google Scholar 6 Bjorklund, I., H. Borg and J. Johansson. 1984. Mercury in Swedish lakes – its regional distribution and causes. Ambio 13: 118–121. Web of Science®Google Scholar 7 Lindqvist, O., A. Jernelov, K. Johansson and H. Rodhe. 1984. Mercury in the Swedish environment. Global and local sources. Report SNV PM 1816. National Swedish Environment Protection Board, Solna, Sweden. Google Scholar 8 Wiener, J.G. 1987. Metal contamination of fish in low-pH lakes and potential implications for piscivorous wildlife. Trans. N. Am. Wildl. Nat. Resour. Conf. 52: 645–657. Google Scholar 9 Richman, L.A., C.D. Wren and P.M. Stokes. 1988. Facts and fallacies concerning mercury uptake by fish in acid stressed lakes. Water Air Soil Pollut. 37: 465–473. 10.1007/BF00192956 CASWeb of Science®Google Scholar 10 Grieb, T.M., C.T. Driscoll, S.P. Gloss, C.L. Schofield, G.L. Bowie and D.B. Porcella. 1990. Factors affecting mercury accumulation in fish in the upper Michigan peninsula. Environ. Toxicol. Chem. 9: 919–930. 10.1002/etc.5620090710 CASWeb of Science®Google Scholar 11 Huckabee, J.W., J.W. Elwood and S.G. Hildebrand. 1979. Accumulation of mercury in freshwater biota. In J.O. Nriagu, ed., The Biogeochemistry of Mercury in the Environment. Elsevier/North Holland Biomedical Press, New York, NY, pp. 277–302. Google Scholar 12 Pennacchioni, A., R. Marchetti and G.F. Gaggino. 1976. Inability of fish to methylate mercuric chloride in vivo. J. Environ. Qual. 5: 451–454. 10.2134/jeq1976.00472425000500040027x CASWeb of Science®Google Scholar 13 Huckabee, J.W., S.A. Janzen, B.G. Blaylock, Y. Talmi and J.J. Beauchamp. 1978. Methylated mercury in brook trout (Salvelinus fontinalis): Absence of an in vivo methylating process. Trans. Am. Fish. Soc. 107: 848–852. 10.1577/1548-8659(1978)107 2.0.CO;2 CASWeb of Science®Google Scholar 14 Robinson, J.B. and O.H. Tuovinen. 1984. Mechanisms of microbial resistance and detoxification of mercury and organomercury compounds: Physiological, biochemical, and genetic analyses. Microb. Rev. 48: 95–124. CASPubMedWeb of Science®Google Scholar 15 Lee, Y.H. and H. Hultberg. 1990. Methylmercury in some Swedish surface waters. Environ. Toxicol. Chem. 9: 833–841. 10.1002/etc.5620090703 CASWeb of Science®Google Scholar 16 Furutani, A. and J.W.M. Rudd. 1980. Measurement of mercury methylation in lake water and sediment samples. Appl. Environ. Microbiol. 40: 770–776. CASPubMedWeb of Science®Google Scholar 17 Jensen, S. and A. Jernelov. 1969. Biological methylation of mercury in aquatic organisms. Nature (Lond.) 223: 753–754. 10.1038/223753a0 CASPubMedWeb of Science®Google Scholar 18 Rudd, J.W.M., A. Furutani and M.A. Turner. 1980. Mercury methylation by fish intestinal contents. Appl. Environ. Microbiol. 40: 777–782. CASPubMedWeb of Science®Google Scholar 19 Jernelov, A. 1972. Mercury and food chains. In R. Hartung and B.D. Dinman, eds., Environmental Mercury Contamination. Ann Arbor Science Publishers, Ann Arbor, MI, pp. 174–177. Google Scholar 20 Drummond, R.A., G.F. Olson and A.R. Batterman. 1974. Cough response and uptake of mercury by brook trout, Salvelinus fontinalis, exposed to mercuric compounds at different hydrogen-ion concentrations. Trans. Am. Fish. Soc. 103: 244–249. 10.1577/1548-8659(1974)103 2.0.CO;2 CASWeb of Science®Google Scholar 21 Rodgers, D.W. and F.W.H. Beamish. 1983. Water quality modifies uptake of waterborne methylmercury by rainbow trout, Salmo gairdneri. Can. J. Fish. Aquat. Sci. 40: 824–828. 10.1139/f83-109 CASWeb of Science®Google Scholar 22 Hakanson, L. 1980. The quantitative impact of pH, bioproduction and Hg-contamination on the Hg-content of fish (pike). Environ. Pollut. Ser. B. 1: 285–304. 10.1016/0143-148X(80)90005-1 Web of Science®Google Scholar 23 Jernelov, A. 1980. The effects of acidity on the uptake of mercury in fish. In T. Y. Toribara, M. W. Miller and P. E. Morrow, eds., Polluted Rain. Plenum Press, New York, NY, pp. 211–222. 10.1007/978-1-4613-3060-8_10 Google Scholar 24 Clarkson, T.W., R. Hamaday and L. Amin-Zaki. 1984. Mercury. In J.O. Nriagu, ed., Changing Metal Cycles and Human Health. Springer-Verlag, New York, NY, pp. 285–309. 10.1007/978-3-642-69314-4_17 Google Scholar 25 Miller, D.R. and H. Akagi. 1979. PH affects mercury distribution, not methylation. Ecotoxicol. Environ. Saf. 3: 36–38. 10.1016/0147-6513(79)90057-5 CASPubMedWeb of Science®Google Scholar 26 Bloom, N.S. and C.J. Watras. 1989. Observations of methylmercury in precipitation. Sci. Total Environ. 87–88: 199–207. 10.1016/0048-9697(89)90235-0 Web of Science®Google Scholar 27 Brouzes, R.J.P., R.A.N. McLean and G.H. Tomlinson. 1977. The link between pH of natural waters and the mercury content of fish. Domtar Research Centre, Senneville, Quebec, Canada. Web of Science®Google Scholar 28 Wood, J.M. 1980. The role of pH and oxidation-reduction potentials in the mobilization of heavy metals. In T. Y. Toribara, M. W. Miller and P. E. Morrow, eds., Polluted Rain. Plenum Press, New York, NY, pp. 223–236. 10.1007/978-1-4613-3060-8_11 Google Scholar 29 Xun, L., N.E.R. Campbell and J.W.M. Rudd. 1987. Measurements of specific rates of net methyl mercury production in the water column and surface sediments of acidified and circumneutral lakes. Can. J. Fish. Aquat. Sci. 44: 750–757. 10.1139/f87-091 CASWeb of Science®Google Scholar 30 Lindqvist, O. and H. Rodhe. 1985. Atmospheric mercury – a review. Tellus 37B: 136–159. 10.1111/j.1600-0889.1985.tb00062.x CASWeb of Science®Google Scholar 31 Slemr, F., G. Schuster and W. Seiler. 1985. Distribution, speciation, and budget of atmospheric mercury. J. Atmos. Chem. 3: 407–434. 10.1007/BF00053870 CASWeb of Science®Google Scholar 32 Brosset, C. 1987. The behavior of mercury in the physical environment. Water Air Soil Pollut. 34: 145–166. 10.1007/BF00184757 CASWeb of Science®Google Scholar 33 Iverfeldt, A. and O. Lindqvist. 1986. Atmospheric oxidation of elemental mercury by ozone in the aqueous phase. Atmos. Environ. 20: 1567–1573. 10.1016/0004-6981(86)90245-3 CASWeb of Science®Google Scholar 34 Lindberg, S.E. 1987. Emission and deposition of atmospheric mercury vapor. In T. C. Hutchinson and K. M. Meema, eds., Lead, Mercury and Arsenic in the Environment. John Wiley & Sons, New York, NY, pp. 89–106. Google Scholar 35 Evans, R.D. 1986. Sources of mercury contamination in the sediments of small headwater lakes in south-central Ontario, Canada. Arch. Environ. Contam. Toxicol. 15: 505–512. 10.1007/BF01056562 CASWeb of Science®Google Scholar 36 Johnson, M.G. 1987. Trace element loadings of sediments of fourteen Ontario Lakes and correlations with concentrations in fish. Can. J. Fish. Aquat. Sci. 44: 3–13. 10.1139/f87-002 CASWeb of Science®Google Scholar 37 Rada, R.G., J.G. Wiener, M.R. Winfrey and D.E. Powell. 1989. Recent increases in atmospheric deposition of mercury to north-central Wisconsin lakes inferred from sediment analyses. Arch. Environ. Contam. Toxicol. 18: 175–181. 10.1007/BF01056202 CASWeb of Science®Google Scholar 38 Benes, P. and B. Havlik. 1979. Speciation of mercury in natural waters. In J. O. Nriagu, ed., The Biogeochemistry of Mercury in the Environment. Elsevier/North-Holland Biomedical Press, New York, NY, pp. 175–202. Google Scholar 39 Rudd, J.W.M. and M.A. Turner. 1983. The English-Wabigoon River system: II. Suppression of mercury and selenium bioaccumulation by suspended and bottom sediments. Can. J. Fish. Aquat. Sci. 40: 2218–2227. 10.1139/f83-258 CASWeb of Science®Google Scholar 40 Rogers, J.S., P.M. Huang, U.T. Hammer and W.K. Liaw. 1984. Dynamics of desorption of mercury adsorbed on poorly crystalline oxides of manganese, iron, aluminum, and silicon. Verh. Int. Verein. Limnol. 22: 283–288. CASGoogle Scholar 41 Miller, R.W. 1975. The role of humic acid in the uptake and release of mercury by freshwater sediments. Verh. Int. Verein. Limnol. 19: 2082–2086. Google Scholar 42 Campbell, P.G.C., A.G. Lewis, P.M. Chapman, A.A. Crowder, W.K. Fletcher, B. Imber, S.N. Luoma, P.M. Stokes and M. Winfrey. 1988. Biologically Available Metals in Sediments. National Research Council of Canada, Ottawa, Canada. Google Scholar 43 Miskimmin, B.M. 1989. The influence of dissolved organic carbon on methylmercury production and sediment-water partitioning in Precambrian Shield lakes. M.S. thesis. University of Manitoba, Winnipeg, Manitoba. Google Scholar 44 Fagerstrom, T. and A. Jernelov. 1971. Formation of methyl mercury from pure mercuric sulphide in aerobic organic sediment. Water Res. 5: 121–122. 10.1016/0043-1354(71)90127-8 CASWeb of Science®Google Scholar 45 Bjornberg, A., L. Hakanson and K. Lundbergh. 1988. A theory on the mechanisms regulating the bioavailability of mercury in natural waters. Environ. Pollut. 49: 53–61. 10.1016/0269-7491(88)90013-9 CASPubMedWeb of Science®Google Scholar 46 Krauskopf, K.B. 1979. Introduction to Geochemistry. McGraw-Hill, New York, NY. Google Scholar 47 Gilmour, C.C., E.A. Henry and R. Mitchell. 1988. Methylation of HgCl2 and HgS by sulfate-reducing bacteria. Abstracts, 88th Annual Meeting of the American Society for Microbiology, Miami, FL, May 8–13, p. 306. Google Scholar 48 Nelson, J.D. and R.R. Colwell. 1975. The ecology of mercury-resistant bacteria in Chesapeake Bay. Microb. Ecol. 1: 191–218. 10.1007/BF02512389 CASWeb of Science®Google Scholar 49 Summers, A.O. 1985. Bacterial resistances to toxic elements. Trend. Biotechnol. 3: 122–125. 10.1016/0167-7799(85)90127-1 CASWeb of Science®Google Scholar 50 Baier, R.W., L. Wojnowich and L. Petrie. 1975. Mercury loss from culture media. Anal. Chem. 47: 2464–2467. 10.1021/ac60364a005 CASPubMedWeb of Science®Google Scholar 51 Ramamoorthy, S., T.C. Cheng and D.J. Kushner. 1983. Mercury speciation in water. Can. J. Fish. Aquat. Sci. 40: 85–89. 10.1139/f83-013 CASWeb of Science®Google Scholar 52 Steffan, R.J., E.T. Korthals and M.R. Winfrey. 1988. Effects of acidification on mercury methylation, demethylation, and volatilization in sediments from an acid-susceptible lake. Appl. Environ. Microbiol. 54: 2003–2009. 10.1128/AEM.54.8.2003-2009.1988 CASPubMedWeb of Science®Google Scholar 53 Winfrey, M.R., W.J. Pekarske and R.J. Steffan. 1986. The importance of microbial and abiological volatilization of mercury in an oligotrophic northern Wisconsin lake. Abstracts, 86th Annual Meeting of the American Society for Microbiology, Washington, DC, March 23–28, p. 304. Google Scholar 54 Wiener, J.G., W.F. Fitzgerald, C.J. Watras and R.G. Rada. 1990. Partitioning and bioavailability of mercury in an experimentally acidified lake. Environ. Toxicol. Chem. 9: 909–918. 10.1002/etc.5620090709 CASWeb of Science®Google Scholar 55 Nagase, H., Y. Ose, T. Sato and T. Ishikawa. 1984. Mercury methylation by compounds in humic material. Sci. Total Environ. 32: 147–156. 10.1016/0048-9697(84)90127-X CASWeb of Science®Google Scholar 56 Lee, Y.H., H. Hultberg and I. Andersson. 1985. Catalytic effect of various metal ions on the methylation of mercury in the presence of humic substances. Water Air Soil Pollut. 25: 391–400. 10.1007/BF00283791 CASWeb of Science®Google Scholar 57 Berman, M. and R. Bartha. 1986. Levels of chemical versus biological methylation of mercury in sediments. Bull. Environ. Contam. Toxicol. 36: 401–404. 10.1007/BF01623527 CASPubMedWeb of Science®Google Scholar 58 Korthals, E.T. and M.R. Winfrey. 1987. Seasonal and spatial variations in mercury methylation and demethylation in an oligotrophic lake. Appl. Environ. Microbiol. 53: 2397–2404. 10.1128/AEM.53.10.2397-2404.1987 CASPubMedWeb of Science®Google Scholar 59 Fagerstrom, T. and A. Jernelov. 1972. Some aspects of the quantitative ecology of mercury. Water Res. 6: 1193–1202. 10.1016/0043-1354(72)90019-X CASWeb of Science®Google Scholar 60 Ramlal, P.S., J.W.M. Rudd and R.E. Hecky. 1986. Methods for measuring specific rates of mercury methylation and degradation and their use in determining factors controlling net rates of mercury methylation. Appl. Environ. Microbiol. 51: 110–114. 10.1128/AEM.51.1.110-114.1986 CASPubMedWeb of Science®Google Scholar 61 Begley, T.P., A.E. Walts and C.T. Walsh. 1986. Mechanistic studies of a protonolytic organomercurial cleaving enzyme: Bacterial organomercurial lyase. Biochemistry 25: 7192–7200. 10.1021/bi00370a064 CASPubMedWeb of Science®Google Scholar 62 Korthals, E.T. 1986. The seasonal and spatial variations of mercury methylation and methylmercury decomposition in an oligotrophic northern Wisconsin lake. M.S. thesis. University of Wisconsin-La Crosse, La Crosse, WI. Google Scholar 63 Wright, D.R. and R. D. Hamilton. 1982. Release of methyl mercury from sediments: Effects of mercury concentration, low temperature, and nutrient addition. Can. J. Fish. Aquat. Sci. 39: 1459–1466. 10.1139/f82-197 CASWeb of Science®Google Scholar 64 Callister, S.M. and M.R. Winfrey. 1986. Microbial methylation of mercury in Upper Wisconsin River sediments. Water Air Soil Pollut. 29: 453–465. 10.1007/BF00283450 CASWeb of Science®Google Scholar 65 Ramlal, P.S. 1983. Measurement of biological mercury methylation in the littoral sediments of an acidified and an unacidified lake. M.S. thesis. University of Manitoba, Winnipeg, Canada. Google Scholar 66 Ramsay, D.J. and P.S. Ramlal. 1987. Measurements of mercury methylation balance in relation to concentrations of total mercury in northern Manitoba reservoirs and their use in predicting the duration of fish mercury problems in new reservoirs. Report for the Canada-Manitoba agreement on the study and monitoring of mercury in the Churchill River Diversion. Department of Fisheries and Oceans, Winnipeg, Manitoba, Canada. Google Scholar 67 Shin, E.B. and A. Krenkel. 1976. Mercury uptake by fish and biomethylation mechanisms. J. Water. Pollut. Control. Fed. 48: 473–501. CASPubMedWeb of Science®Google Scholar 68 Bodaly, R.A., R.E. Hecky and R.J.P. Fudge. 1984. Increases in fish mercury levels in lakes flooded by the Churchill River diversion, northern Manitoba. Can. J. Fish. Aquat. Sci. 41: 682–691. 10.1139/f84-079 CASWeb of Science®Google Scholar 69 Hecky, R.E., R.A. Bodaly, D.J. Ramsay and N.E. Strange. 1987. Enhancement of mercury bioaccumulation in fish by flooded terrestrial materials in experimental ecosystems. Summary report for the Canada-Manitoba agreement on the study and monitoring of mercury in the Churchill River diversion. Department of Fisheries and Oceans, Winnipeg, Manitoba, Canada. Google Scholar 70 Jernelov, A. 1970. Release of methyl mercury from sediments with layers containing inorganic mercury at different depths. Limnol. Oceanogr. 15: 958–960. 10.4319/lo.1970.15.6.0958 CASWeb of Science®Google Scholar 71 Winfrey, M.R. 1984. Microbial production of methane. In R. M. Atlas, ed., Petroleum Microbiology. Macmillan, New York, NY, pp. 153–219. Google Scholar 72 Schindler, D.W. 1988. Effects of acid rain on freshwater ecosystems. Science 239: 149–157. 10.1126/science.239.4836.149 CASPubMedWeb of Science®Google Scholar 73 Kelly, C.A., J.W.M. Rudd, A. Furutani and D.W. Schindler. 1984. Effects of lake acidification on rates of organic matter decomposition in sediments. Limnol. Oceanogr. 29: 687–694. 10.4319/lo.1984.29.4.0687 CASWeb of Science®Google Scholar 74 Compeau, G.C. and R. Bartha. 1985. Sulfate-reducing bacteria: Principal methylators of mercury in anoxic estuarine sediment. Appl. Environ. Microbiol. 50: 498–502. 10.1128/AEM.50.2.498-502.1985 CASPubMedWeb of Science®Google Scholar 75 Winfrey, M.R. 1985. The role of methane-producing and sulfate-reducing bacteria in mercury methylation. Abstracts, 85th Annual Meeting of the American Society for Microbiology, Las Vegas, NV, March 3–7, p. 271. Google Scholar 76 Compeau, G.C. and R. Bartha. 1987. Effect of salinity on mercury-methylating activity of sulfate-reducing bacteria in estuarine sediments. Appl. Environ. Microbiol. 53: 261–265. 10.1128/AEM.53.2.261-265.1987 CASPubMedWeb of Science®Google Scholar 77 McMurtry, M.J., D.L. Wales, W.A. Scheider, G.L. Beggs and P.E. Dimond. 1989. Relationship of mercury concentrations in lake trout (Salvelinus nanaycush) and smallmouth bass (Micropterus dolomieui) to the physical and chemical characteristics of Ontario lakes. Can. J. Fish. Aquat. Sci. 46: 426–434. 10.1139/f89-057 CASWeb of Science®Google Scholar 78 Topping, G. and I.M. Davies. 1981. Methylmercury production in the marine water column. Nature (Lond.) 290: 243–244. 10.1038/290243a0 CASWeb of Science®Google Scholar 79 Schindler, D.W. and M.A. Turner. 1982. Biological, chemical and physical responses of lakes to experimental acidification. Water Air Soil Pollut. 18: 259–271. 10.1007/BF02419417 CASWeb of Science®Google Scholar 80 Kelly, C.A. and J.W.M. Rudd. 1984. Epilimnetic sulfate reduction and its relationship to lake acidification. Biogeochem. 1: 63–77. 10.1007/BF02181121 CASWeb of Science®Google Scholar 81 Gilmour, C.C. and R. Mitchell. 1988. Sulfate stimulates mercury methylation in freshwater sediments. Abstracts, Annual Meeting of the American Society of Limnology and Oceanography, Boulder, Colorado, June 12–16, p. 28. Google Scholar 82 Rudd, J.W.M., M.A. Turner, B.E. Townsend, A. Swick and A. Furutani. 1980. Mechanisms of movement of mercury into aquatic biota and a preliminary examination of some mercury amelioration procedures. Mercury pollution in the Wabigoon-English River system of northwestern Ontario, and possible remedial measures. A progress report prepared by the steering committee. Department of Fisheries and Oceans, Winnipeg, Manitoba, Canada. Google Scholar 83 Craig, P.J. and P.D. Bartlett. 1978. The role of hydrogen sulphide in environmental transport of mercury. Nature (Lond.) 275: 635–637. 10.1038/275635a0 CASWeb of Science®Google Scholar 84 Rudd, J.W.M. and M.A. Turner. 1983. The English-Wabigoon River system: V. Mercury and selenium bioaccumulation as a function of aquatic and primary productivity. Can. J. Fish. Aquat. Sci. 40: 2251–2259. 10.1139/f83-261 CASWeb of Science®Google Scholar 85 Furutani, A., J.W.M. Rudd and C.A. Kelly. 1984. A method for measuring the response of sediment microbial communities to environmental perturbations. Can. J. Microbiol. 30: 1408–1414. 10.1139/m84-224 CASWeb of Science®Google Scholar 86 Ramlal, P.S., J.W.M. Rudd, A. Furutani and L. Xun. 1985. The effect of pH on methyl mercury production and decomposition in lake sediments. Can. J. Fish. Aquat. Sci. 42: 685–692. 10.1139/f85-088 CASWeb of Science®Google Scholar 87 Rudd, J.W.M., C.A. Kelly, V.St. Louis, R.H. Hesslein, A. Furutani and M.H. Holoka. 1986. Microbial consumption of nitric and sulfuric acids in acidified north temperate lakes. Limnol. Oceanogr. 31: 1265–1278. 10.4319/lo.1986.31.6.1267 Google Scholar 88 Summers, A.O. 1986. Organization, expression, and evolution of genes for mercury resistance. Annu. Rev. Microbiol. 40: 607–634. 10.1146/annurev.mi.40.100186.003135 CASPubMedWeb of Science®Google Scholar 89 Foster, T.J. 1987. The genetics and biochemistry of mercury resistance. CRC Crit. Rev. Microbiol. 15: 117–140. 10.3109/10408418709104455 PubMedWeb of Science®Google Scholar 90 Silver, S. and T.K. Misra. 1988. Plasmid-mediated heavy metal resistances. Annu. Rev. Microbiol. 42: 717–743. 10.1146/annurev.mi.42.100188.003441 CASPubMedWeb of Science®Google Scholar 91 Goldstein, R.A., B.H. Olson and D.B. Porcella. 1988. Conceptual model of genetic regulation of mercury biogeochemical cycling. Environ. Technol. Lett. 9: 957–964. 10.1080/09593338809384656 CASWeb of Science®Google Scholar 92 Johnson, M.G., L.R. Culp and S.E. George. 1986. Temporal and spatial trends in metal loadings to sediments of the Turkey Lakes, Ontario. Can. J. Fish. Aquat. Sci. 43: 754–762. 10.1139/f86-093 CASWeb of Science®Google Scholar 93 Meger, S.A. 1986. Polluted precipitation and the geochronology of mercury deposition in lake sediment of northern Minnesota. Water Air Soil Pollut. 30: 411–419. 10.1007/BF00305211 CASWeb of Science®Google Scholar 94 Rudd, J.W.M., M.A. Turner, A. Furutani, A.L. Swick and B.E. Townsend. 1983. The English-Wabigoon River system: I. A synthesis of recent research with a view towards mercury amelioration. Can. J. Fish. Aquat. Sci. 40: 2206–2217. 10.1139/f83-257 CASWeb of Science®Google Scholar 95 Elwood, J.W., R.R. Turner, R.B. Cook and M.A. Bogle. 1987. Behavior and fish uptake of mercury in a contaminated stream. In S.E. Lindberg and T.C. Hutchinson, eds., Heavy Metals in the Environment, Vol. 1. CEP Consultants, Edinburgh, U.K., pp. 58–62. Google Scholar 96 Anderson, M.A. and A.J. Rubin. 1981. Adsorption of Inorganics at Solid-Liquid Interfaces. Ann Arbor Science Publishers, Ann Arbor, MI. Google Scholar 97 Schindler, D.W., R.H. Hesslein, R. Wagemann and W.S. Broecker. 1980. Effects of acidification on mobilization of heavy metals and radionuclides from the sediments of a freshwater lake. Can. J. Fish. Aquat. Sci. 37: 373–377. 10.1139/f80-051 CASWeb of Science®Google Scholar 98 Jackson, T.A., G. Kipphut, R.H. Hesslein and D.W. Schindler. 1980. Experimental study of trace metal chemistry in soft-water lakes at different pH levels. Can. J. Fish. Aquat. Sci. 37: 387–402. 10.1139/f80-053 CASWeb of Science®Google Scholar 99 Summers, A.O. 1984. Genetic adaptations involving heavy metals. In M.J. Klug and C.A. Reddy, eds., Current Perspectives in Microbial Ecology. American Society for Microbiology, Washington, DC, pp. 94–104. Google Scholar 100 Pan-Hou, H.S., M. Nishimoto and N. Imura. 1981. Possible role of membrane proteins in mercury resistance of Enterobacter aerogenes. Arch. Microbiol. 130: 93–95. 10.1007/BF00411057 CASPubMedWeb of Science®Google Scholar 101 Yan, N.D. 1983. Effects of changes in pH on transparency and thermal regimes of Lohi Lake, near Sudbury, Ontario. Can. J. Fish. Aquat. Sci. 40: 621–626. 10.1139/f83-081 Web of Science®Google Scholar 102 Daivs, B.D., D.S. Anderson and F. Berge. 1985. Paleolimnological evidence that lake acidification is accompanied by loss of organic matter. Nature (Lond.) 316: 436–438. 10.1038/316436a0 Web of Science®Google Scholar 103 Effler, S.W., G.C. Schafran and C.T. Driscoll. 1985. Partitioning light attenuation in an acidic lake. Can. J. Fish. Aquat. Sci. 42: 1707–1711. 10.1139/f85-214 Web of Science®Google Scholar 104 Cook R.B., C.A. Kelly, D.W. Schindler and M.A. Turner. 1986. Mechanisms of hydrogen ion neutralization in an experimentally acidified lake. Limnol. Oceanogr. 3: 134–148. 10.4319/lo.1986.31.1.0134 Google Scholar 105 Verta, M. 1984. The mercury cycle in lakes: Some new hypotheses. Aqua Fennica. 14: 215–221. CASGoogle Scholar 106 Mannio, J., M. Verta, P. Kortelainen and S. Rekolainen. 1986. The effect of water quality on the mercury concentration of northern pike ( Esox lucius L.) in Finnish forest lakes and reservoirs. Public Water Research Institute, National Board of Waters, Finland 65: 32–43. Google Scholar 107 Weber, J.H., K. Reisinger and M. Stoeppler. 1985. Methylation of mercury (II) by fulvic acid. Environ. Technol. Lett. 6: 203–208. 10.1080/09593338509384337 CASWeb of Science®Google Scholar 108 Kelly, C.A., J.W.M. Rudd, R.H. Hesslein, D.W. Schindler, P.J. Dillon, C.T. Driscoll, S.A. Gherini and R.E. Hecky. 1987. Prediction of biological acid neutralization in acid-sensitive lakes. Biogeochem. 3: 129–140. 10.1007/BF02185189 CASWeb of Science®Google Scholar 109 Rada, R.G., M.R. Winfrey, J.G. Wiener and D.E. Powell. 1987. A comparison of mercury distribution in sediment cores and mercury volatilization from surface waters of selected northern Wisconsin lakes. Wisconsin Department of Natural Resources, Madison, WI. Google Scholar 110 Alberts, J.J., J.E. Schildler, R.W. Miller and D.E. Nutter. 1974. Elemental mercury evolution mediated by humic acid. Science 184: 895–897. 10.1126/science.184.4139.895 CASPubMedWeb of Science®Google Scholar 111 Skogerboe, R.K. and S.A. Wilson. 1981. Reduction of ionic species by fulvic acid. Anal. Chem. 53: 228–232. 10.1021/ac00225a023 CASWeb of Science®Google Scholar 112 Summers, A.O. and S. Silver. 1978. Microbial transformations of metals. Annu. Rev. Microbiol. 32: 637–672. 10.1146/annurev.mi.32.100178.003225 CASPubMedWeb of Science®Google Scholar 113 Hecky, R.E. 1987. Methylmercury contamination in northern Canada. Northern Perspectives 15: 8–9. Google Scholar 114 Bodaly, R.A., R.E. Hecky and P.S. Ramlal. 1987. Mercury availability, mobilization and methylation in the Churchill River diversion area. Report to the steering committee for the Canada-Manitoba agreement on the study and monitoring of mercury in the Churchill River diversion. Department of Fisheries and Oceans, Winnipeg, Manitoba, Canada. Google Scholar 115 Fitzgerald, W.F. and G.A. Gill. 1979. Subnanogram determination of mercury by two-stage gold amalgamation and gas phase detection applied to atmospheric analysis. Anal. Chem. 51: 1714–1720. 10.1021/ac50047a030 CASWeb of Science®Google Scholar 116 Bloom, N.S. and W.F. Fitzgerald. 1988. Determination of volatile mercury species at the picogram level by low-temperature gas chromatography with cold-vapor atomic fluorescence detection. Anal. Chim. Acta 208: 151–161. 10.1016/S0003-2670(00)80743-6 CASWeb of Science®Google Scholar 117 Bloom, N.S. 1989. Determination of picogram levels of methylmercury by aqueous phase ethylation, followed by cryogenic gas chromatography with cold vapor atomic fluorescence detection. Can. J. Fish. Aquat. Sci. 46: 1131–1140. 10.1139/f89-147 CASWeb of Science®Google Scholar 118 Rudd, J.W.M., M.A. Turner, B.E. Townsend, A. Swick and A. Furutani. 1980. Dynamics of selenium in mercury-contaminated experimental freshwater ecosystems. Can. J. Fish. Aquat. Sci. 37: 848–857. 10.1139/f80-113 CASWeb of Science®Google Scholar 119 Turner, M.A. and J.W.M. Rudd. 1983. The English-Wabigoon River system: III. Selenium in lake enclosures: Its geochemistry, bioaccumulation, and ability to reduce mercury bioaccumulation. Can. J. Fish. Aquat. Sci. 40: 2228–2240. 10.1139/f83-259 CASWeb of Science®Google Scholar Citing Literature Volume9, Issue7July 1990Pages 853-869 ReferencesRelatedInformation

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