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METAALCIUS: A Whole Ecosystem Experiment to Study the Environmental Fate of Mercury

  • Holger HintelmannEmail author
Chapter
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Abstract

Atmospheric mercury depositions have increased approximately by a factor of three since industrialization, which also led to increase of methylmercury (MeHg) levels in fish, spawning a large number of health advisories. Mercury is now the most common contaminant responsible for fish consumption advisories in the United States and Canada. Almost all US states have regulations against fish consumption due to high mercury levels. Unacceptable fish mercury concentrations exist in all Canadian provinces, including remote “pristine” lakes. Because of the many human and environmental health risks associated with mercury exposure via fish consumption, implementation of effective Hg emission control regulations is discussed in many nations. However, such measures are expected to be very costly and at the same time, safe emission levels are difficult to establish because the available science is still not able to answer if and to which degree reductions in atmospheric mercury deposition translate into changes in fish mercury concentrations. This relationship cannot be understood by examining historical or regional data, mainly because of confounding effects of other environmental factors. Laboratory experiments provide good control over test conditions, but fail to simulate the complex links in the real world that connect atmospheric mercury deposition and fish mercury. To overcome this conundrum two unique experimental approaches were combined in the Mercury Experiment To Assess Atmospheric Loading In Canada and the United Sates (METAALICUS). This experiment is carried out at he whole ecosystem scale by loading an entire lake and its watershed with isotopically labeled mercury providing full-scale realism plus the control necessary to examine the effects of one critical factor: mercury loading. The overriding question METAALICUS set out to answer is: What happens to fish mercury concentrations when there is a change in atmospheric mercury deposition?

Keywords

Sphagnum Moss Peat Core Mercury Isotope Environmental Health Risk Experimental Lake Area 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

Past and present funding for METAALICUS includes support from the Canadian Department of Fisheries and Oceans, the National Sciences Engineering and Research Council of Canada, Environment Canada, the Canadian Forest Service, the Electric Power Research Institute, the US Environmental Protection Agency, the US Geological Service, the Wisconsin Department of Natural Resources, and the U.S. Department of Energy.

References

  1. Allan C.J., N.T. Roulet, and A.R. Hill, 1993: The biogeochemistry of pristine, headwater Precambrian shield watersheds: an analysis of material transport within a heterogeneous landscape. Biogeochemistry 22, 37–79CrossRefGoogle Scholar
  2. Amyot, M., G. Southworth, S.E. Lindberg, H Hintelmann, J.D. Lalonde, N. Ogrinc, A.J. Poulain, and K.A. Sandilands, 2004: Formation and evasion of dissolved gaseous mercury in large enclosures amended with 200HgCl2. Atmos. Environ. 38, 4279–4289CrossRefGoogle Scholar
  3. Branfireun, B.A., D.P. Krabbenhoft, H. Hintelmann, R.J. Hunt, J.P. Hurley, and J.W.M. Rudd, 2005: Speciation and transport of newly atmospheric mercury in a Boreal forest wetland: a stable mercury isotope approach. Water Resour. Res. 41, W06016/1–W06016/11CrossRefGoogle Scholar
  4. Harris, R.C. and R.A. Bodaly, 1998: Temperature, growth and dietary effects on fish mercury dynamics in two Ontario lakes. Biogeochemistry 40, 175–187CrossRefGoogle Scholar
  5. Harris, R.C., J.W.M. Rudd, M. Amyot, C. Babiarz, K. Beaty, P. Blanchfield, R.A. Bodaly, B. Branfireun, C.C. Gilmour, J. Graydon, A. Heyes, H. Hintelmann, J. Hurley, C.A. Kelly, D. Krabbenhoft, S. Lindberg, R. Mason, M. Paterson, C. Podemski, A. Robinson, K. Sandilands, G. Southworth, V. St. Louis, and M. Tate, 2007: Whole-ecosystem study shows rapid fish-mercury response to changes in mercury deposition. Proc. Nat. Acad. Sci. 104, 16586–16591CrossRefGoogle Scholar
  6. Hintelmann, H., 2003: Trace element speciation: Mercury, in: Sample preparation for trace element analysis, Z. Mester and R. Sturgeon, Editors. Elsevier: NL, pp. 1063–1080CrossRefGoogle Scholar
  7. Hintelmann, H. and R.D. Evans, 1997: Application of stable isotopes in environmental tracer studies – Measurement of monomethylmercury (CH3Hg+) by isotope dilution ICP-MS and detection of species transformation. Fresenius J. Anal. Chem. 358, 378–385CrossRefGoogle Scholar
  8. Hintelmann, H., and N. Ogrinc, 2003: Determination of stable mercury isotopes by ICP/MS and their application in environmental studies, in: Biogeochemistry of environmentally important trace elements, Y. Cai and C.O. Braids, Editors. ACS Symposium Series Vol. 835, Washington, DC. pp. 321–338Google Scholar
  9. Hintelmann, H., R.D. Evans, and J.Y. Villeneuve, 1995: Measurement of mercury methylation in sediments by using enriched stable mercury isotopes combined with methylmercury determination by gas chromatography – inductively coupled plasma mass spectrometry. J. Anal. Atom. Spectrom. 9, 619–624CrossRefGoogle Scholar
  10. Hintelmann, H., R. Harris, A. Heyes, J.P. Hurley, C.A. Kelly, D.P. Krabbenhoft, S. Lindberg, J.W.M. Rudd, K.J. Scott, and V.L. St.Louis, 2002: Reactivity and mobility of new and old mercury deposited in a Boreal forest ecosystem, during the first year of the METAALICUS study. Environ. Sci. Technol. 36, 5034–5040CrossRefGoogle Scholar
  11. Hudson, R.J.M., S.A. Gherini, W.F. Fitzgerald, and D.B. Porcella, 1995: Anthropogenic influences on the global mercury cycle – A model-based analysis. Water Air Soil Pollut. 80, 265–272CrossRefGoogle Scholar
  12. Kerr, R.A., 1998: Acid rain control: Success on the cheap. Science 282, 1024–1026CrossRefGoogle Scholar
  13. Orihel, D.M., M.J. Paterson, C.C. Gilmour, R.A. Bodaly, P.J. Blanchfield, H. Hintelmann, R.C. Harris, and J.W.M. Rudd, 2006: Effect of loading rate on the fate of mercury in littoral mesocosms. Environ. Sci. Technol. 40, 5992–6000CrossRefGoogle Scholar
  14. Orihel, D.M., M.J. Paterson, P.J. Blanchfield, D. Bodaly, and H. Hintelmann,. 2007: Experimental evidence of a linear relationship between inorganic mercury loading and methylmercury accumulation by aquatic biota. Environ. Sci. Technol. 41, 4952–4958CrossRefGoogle Scholar
  15. Paterson, M.J., P. Blanchfield, C. Podemski, H. Hintelmann, R. Harris, N. Ogrinc, J.M.W. Rudd, and K.A. Sandilands, 2006: Bioaccumulation of newly-deposited mercury by fish and invertebrates: An enclosure study using stable mercury isotopes. Can. J. Fish Aquat. Sci. 63, 2213–2224CrossRefGoogle Scholar
  16. Poulain, A.J., M. Amyot, D. Findlay, S. Telor, T. Barkay, and H. Hintelmann, 2004: Biological and photochemical production of dissolved gaseous mercury in a boreal lake. Limnol. Oceanogr. 49, 2265–2275CrossRefGoogle Scholar
  17. Schindler, D.W., 1974: Eutrophication and recovery in experimental lakes: Implications for lake management. Science 184, 897–899CrossRefGoogle Scholar
  18. Southworth, G., S. Lindberg, H. Hintelmann, M. Amyot, A. Poulain, M. Bogle, M. Paterson, J.M.W. Rudd, R. Harris, K. Sandilands, D. Krabbenhoft, and M. Olsen, 2007: Evasion of added isotopic mercury from a north temperate lake. Environ. Toxicol. Chem. 26, 53–60CrossRefGoogle Scholar
  19. St. Louis, V.L., J.W.M. Rudd, C.A. Kelly, and L.A. Barrie, 1995: Wet deposition of methyl mercury in northwestern Ontario compared to other geographic locations. Water Air Soil Pollut. 80, 405CrossRefGoogle Scholar
  20. St Louis, V.L., C.A. Kelly, E. Duchemin, J.W.M. Rudd, and D.M. Rosenberg, 2000: Reservoir surfaces as sources of greenhouse gases to the atmosphere: A global estimate. Bioscience 50, 766–775CrossRefGoogle Scholar
  21. St Louis, V.L., J.W.M. Rudd, C.A. Kelly, R.A. Bodaly, M.J. Paterson, K.G. Beaty, R.H. Hesslein, A. Heyes, and A.R. Majewski, 2004: The rise and fall of mercury methylation in an experimental reservoir. Environ. Sci. Technol. 38, 1348–1358CrossRefGoogle Scholar
  22. Watras, C.J., K.A. Morrison, J.S. Host, and N.S. Bloom, 1995: Concentrations of mercury species in relationship to other site-specific factors in the surface waters of Northern Wisconsin lakes. Limnol. Oceanogr. 40, 556–565CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.Department of ChemistryTrent UniversityPeterboroughCanada

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