Abstract
One of the principal influences on elemental fluxes from forested catchments in south-central ontario is the atmospheric deposition rate of strong acids. While sulphate deposition has decreased by ∼40% in the past two decades, nitrate deposition has remained unchanged and is now equivalent to sulphate deposition. Sulphate concentrations in headwater lakes and their inflows have decreased, but much less than expected based on the anticipated direct response of the catchments. Reduction-oxidation (redox) processes occurring in wetlands have been identified as the reason for delayed recovery, and climate events as controlling these redox processes. A new version of the biogeochemical model MAGIC (model of acidification of groundwater in catchments) with a wetland compartment that incorporates redox processes driven by climate events has been generated. The application of MAGIC to a subcatchment of Plastic Lake in south-central ontario indicates that the basic structure of the model appears to be consistent with the observed data. Moreover, the wetland component was essential in reproducing the observed trends, which include sulphate retention in non-drought years and re-oxidation of previously stored (reduced) sulphur in drought years.
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References
Alewell, C. and Manderscheid, B.: 1998, ‘Use of objective criteria for the assessment of biogeochemical ecosystem models’, Ecol. Model. 107, 213–224.
Cosby, B. J., Hornberger, G. M., Galloway, J. N. and Wright, R. R.: 1985, ‘Modeling the effects of acid deposition: Assessment of a lumped parameter model of soil water and streamwater chemistry’, Water Resour. Res. 21, 51–63.
Cosby, B. J., Ferrier, R. C., Jenkins, A. and Wright, R. R.: 2001, ‘Modelling the effects of acid deposition: refinements, adjustments and inclusion of nitrogen dynamics in the MAGIC model’, Hydrol Earth Syst. Sci. 5, 499–517.
Devito, K. J. and Hill, A. R.: 1999, ‘Sulphate mobilization and pore water chemistry in relation to groundwater hydrology and summer drought in two conifer swamps on the Canadian shield’, Water, Air, Soil Pollut. 113, 97–114.
Dillon, R J. and LaZerte, B. D.: 1992, ‘Response of the Plastic Lake catchment, Ontario, to reduced sulphur deposition’, Environ. Pollut. 77, 211–217.
Dillon, R J. and Evans, H. E.: 2000, ‘Long-term changes in the chemistry of a soft-water lake under changing acid deposition rates and climate fluctuations’, Verh. Int. Verein. Limnol. 27, 2615–2619.
Dillon, R J., Reid, R. A. and De Grosbois, E.: 1987, ‘The rate of acidification of aquatic ecosystems in ontario, Canada’, Nature 329, 45–48.
Dillon, R J., Lusis, M., Reid, R. A. and Yap, D.: 1988, ‘Ten-year trends in sulphate, nitrate and hydrogen deposition in central ontario’, Atmos. Environ. 22, 901–905.
Dillon, R. J., Molot, L. A. and Futter, M.: 1997, ‘The effect of El Niño-related drought on the recovery of acidified lakes’, Environ. Monit. Assess. Environ. Monit. Assess. 46, 105–111.
Driscoll, C. T., Postek, K. M., Kretser, W. and Raynal, D. J.: 1995, ‘Long-term trends in the chemistry of precipitation and lake water in the Adirondack region of New York, U.S.A.’, Water, Air, Soil Pollut. 85, 583–588.
Driscoll, C. T., Likens, G. E. and Church, M. R.: 1998, ‘Recovery of surface waters in the northeastern U.S. from decreases in atmospheric deposition’, Water, Air, Soil Pollut. 105, 319–329.
Eimers, M. C. and Dillon, P. J.: 2002, ‘Climate effects on sulphate flux from forested catchments in south-central ontario’, Bio geochemistry 61, 337–355.
EPA: 2000, National Air Pollutant Emission Trends: 1900-1998, EPA-454/R-00-002, United States Environmental Protection Agency, North Carolina (online: www.epa.gov/ttn/chief/trends/trends98).
Ferm, M. and Hultberg, H.: 1995, ‘Method to estimate atmospheric deposition of base cations in coniferous throughfall’, Water, Air, Soil Pollut 85, 2229–2234.
Galloway, J. N.: 1995, ‘Acid deposition: Perspectives in time and space’, Water, Air, Soil Pollut. 85, 15–24.
Hultberg, H. and Grennfelt, P.: 1992, ‘Sulphur and seasalt deposition as reflected by throughfall and runoff chemistry in forested catchments’, Environ. Pollut. 75, 215–222.
Husar, R.: 1994, ‘Sulphur and nitrogen emission trends for the United States: An application of the materials flow approach’, in R. U. Ayres and U. E. Simonis (eds), Industrial Metabolism: Restructuring for Sustainable Development, United Nations University Press, pp. 390 (online: www.unu.edu/unupress/unupbooks/80841e/80841e00.htm).
Janssen, P. H. M. and Heuberger, P. S. C.: 1995, ‘Calibration of process-oriented models’, Ecol. Model. 83, 55–66.
Jeffries, D. S., Clair, T. A., Dillon, P. J., Papineau, M. and Stainton, M. P.: 1995, ‘Trends in surface water acidification at ecological monitoring sites in southeastern Canada (1981-1991)’, Water, Air, Soil Pollut. 85, 577–582.
Kirkwood, D. E. and Nesbitt, H. W.: 1991, ‘Formation and evolution of soils from an acidified watershed: Plastic Lake, Ontario, Canada’, Geochim. Cosmochim. Acta 55, 1295–1308.
LaZerte, B. D.: 1993, ‘The impact of drought and acidification on the chemical exports from a minerotrophic conifer swamp’, Biogeochemistry 18, 153–175.
LaZerte, B. D. and Findeis, J.: 1994. ‘Acidic leaching of a podzol Bf horizon from the Precambrian Shield, Ontario, Canada’, Can. J. Soil Sci. 75, 43–54.
LaZerte, B. D. and Scott, L.: 1996, ‘Soil water leachate from two forested catchments on the Precambrian Shield, Ontario’, Can. J. For. Res. 26, 1353–1365.
Lefohn, A. S., Husar, J. D. and Husar, R. B.: 1999, ‘Estimating historical anthropogenic global sulfur emission patterns for the period 1850-1990’, Atmos. Environ. 33, 3435–3444.
Locke, B. A. and Scott, L. D.: 1986, ‘Studies of lakes and watersheds in Muskoka-Haliburton, Ontario: Methodology (1976-1985)’, Data Report DR 86/4, Dorset Research Centre, Ontario Ministry of the Environment, Dorset, Ontario, Canada.
Lozano, F.: 1987, ‘Physical and chemical properties of the soils at the southern biogeochemistry study site’, Report BGC-018, Dorset Research Centre, Ontario Ministry of the Environment, Dorset, Ontario, Canada.
Lozano, F. and Parton, W. J.: 1987, ‘Forest cover characteristics of the Harp #4 and Plastic #1 subcatchments at the southern biogeochemical study site’, Report BGC-006, Dorset Research Centre, Ontario Ministry of the Environment, Dorset, Ontario, Canada.
McNicol, D. K., Mallory, M. L., Laberge, C. and Cluis, D. A.: 1998, ‘Recent temporal patterns in the chemistry of small acid sensitive lakes in central ontario, Canada’, Water, Air, Soil Pollut. 105, 343–351.
Neary, A. J. and Gizyn, W. I.: 1994, ‘Throughfall and stemflow under deciduous and coniferous forest canopies in south-central ontario’, Can. J. For. Res. 24, 1089–1110.
oME: 1983, ‘Handbook of analytical methods for environmental samples’, Technical Report, Ontario Ministry of the Environment, Rexdale, Ontario, Canada, pp. 246.
Scheider, W. A., Reid, R. A., Locke, B. A. and Scott, L. D.: 1983, ‘Studies of lakes and watersheds in Muskoka-Haliburton, Ontario: Methodology (1976-1982)’, Data Report DR 83/1, Dorset Research Centre, Ontario Ministry of the Environment, Dorset, Ontario, Canada.
Stoddard, J. L., Jeffries, D. S., Lükewille, A., Clair, T. A., Dillon, P. J., Driscoll, C. T., Forsius, M., Johannesen, M., Kahl, J. S., Kellogg, J. H., Kemp, A., Mannio, J., Monteith, D. T., Murdoch, P. S., Patrick, S., Rebsdorf, A., Skjelkvåle, B. L., Stainton, M. P., Traaen, T., Van Dam, H., Webster, K. E., Wieting, J. and Wilander, A.: 1999, ‘Regional trends in aquatic recovery from acidification in North America and Europe’, Nature 401, 575–578.
Tiktak, A. and Van Grinsven, H. J. M.: 1995, ‘Review of sixteen forest-soil-atmosphere models’, Ecol Model 83, 35–53.
Watmough, S. A. and Dillon, P. J.: 2001, ‘Base cation losses from a coniferous catchment in central ontario, Canada’, Water, Air, Soil Pollut.: Focus 1, 507–524.
Watmough, S. A. and Dillon, P. J.: 2003, ‘Major fluxes from a coniferous catchment in central ontario, 1983–1999’, Biogeochemistry (in press).
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Aherne, J., Larssen, T., Dillon, P.J., Cosby, B.J. (2004). Effects of Climate Events on Elemental Fluxes from Forested Catchments in Ontario, Canada: Modelling Drought-Induced Redox Processes. In: Wieder, R.K., Novák, M., Vile, M.A. (eds) Biogeochemical Investigations of Terrestrial, Freshwater, and Wetland Ecosystems across the Globe. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0952-2_3
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DOI: https://doi.org/10.1007/978-94-007-0952-2_3
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