Abstract
The input and output flux data of total Hg (THg) and methylmercury (MeHg) from three catchments located in different geographical regions in Sweden and one catchment in southern Finland were compared to elucidate the role of current atmospheric Hg/MeHg deposition with regard to waterborne Hg/MeHg output.
There was a negative co-variaton between the open field THg inputs and the ratio of THg output to open field input. The highest ratio (and lowest input) occurring in N. Sweden and S. Finland, while the lowest output ratio (and highest inputs) occurred in southwest Sweden. A much larger variation was found in the ratio of output to open field input for MeHg (14 to 160%). Examinations of MeHg input/output data in relation to catchment charateristics suggest that riparian peat, mires and wet organic soil contributed to the large MeHg output from certain catchments, probably due to in situ production of MeHg. This finding is consistent with other studies which have found that catchment characteristics such as wetland area, flow pathways, seasonal temperature and water flow are important in controlling the output of MeHg. These catchment characteristics govern the fate of the contemporary input of Hg and MeHg as well as the mobilization of the soil pools.
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References
Aastrup M, Johnsson J, Bringmark E, Bringmark I & Iverfeldt Å (1991) Occurrence and transport of mercury within a small catchment area. Water Air Soil Poll. 80: 445–454
Bishop KH & Lee YH (1997) Catchments as a source of mercury/methylmercury in boreal surface waters. In: Sigel A & Sigel H (Eds) Metal Ions in Biology, Vol. 34 (pp 113–130). Marcel Dekker, Inc., New York
Bishop KH, Lee YH, Pettersson C & Allard B (1995a) Methylmercury output from the Svartberget catchment in northern Sweden during spring flood. Water Air Soil Poll. 80: 445–454
Bishop KH, Lee YH, Pettersson C & Allard B (1995b) Terrestrial sources of methylmercury in surface water: The importance of the riparian zone on the Svartberget catchment. Water Air Soil Poll. 80: 435–444
Bloom NS & Crecelius EA (1983) Determination of mercury in seawater at subnanogram per litre levels. Mar. Chem. 14: 49
Hanson PJ, Lindberg SE, Tabberer TA, Owens JG & Kim KH (1995) Foliar exchange of mercury vapour: Evidence for a compensation point. Water Air Soil Poll. 80: 373–382
Horvat M, Liang L & Bloom NS (1993) Comparison of distillation with other current isolation methods for the determination of methyl mercury compounds in low level environmental samples. Part II Water. Anal. Chim. Acta 281: 153–168
Hultberg H, Iverfeldt Å & Lee YH (1994) Methylmercury input/out and accumulation in forested catchments and critical loads for lakes in southwestern Sweden. In: Watras J & Huckabee JW (Eds) Mercury Pollution: Integration and Synthesis (pp 313–322). Lewis Publishers, Boca Raton, FL
Håkanson L, Nilsson Å & Andersson T (1988) Mercury in fish in Swedish lakes. Environ.Pollut. 49: 145–162
Iverfeldt Å (1991) Occurrence and turnover of atmospheric mercury over the Nordic countries. Water Air Soil Poll. 56: 251–265
Kindbom K, Sjöberg K, Munthe J & Lövblad (1995) Luft-och nederbördskemiska stationsnätetinom PMK. Resultat från 1994. IVL Rapport B1206. Swedish Environmental Research Institute (in Swedish)
Krabbenhoft DP, Benoit JM, Andren AW, Babiarz CL & Hurley JP (1995) Mercury cycling in the Allequash Creek watershed, northern Wisconsin. Water Air Soil Poll. 80: 425–433
Lee YH, Bishop KH, Pettersson C, Iverfeldt Å & Allard B (1995) Subcatchment output of mercury and methylmercury at Svartberget in northern Sweden. Water Air Soil Poll. 80: 455–465
Lee YH, Borg GCH, Iverfeldt Å & Hultberg H (1994a) Fluxes and turnover of methylmercury: Mercury pools in forest soils. In: Watras CJ & Huckabee JW (Eds) Mercury Pollution: Integration and Synthesis (pp 329–341). Lewis Publishers, Boca Raton, FL
Lee YH, Munthe J & Iverfeldt Å (1994b) Experiences with the analytical procedures for the determination of methylmercury in environmental samples. Appl. Organomet. Chem. 8: 659–664
Lindberg SE, Meyers TP, Taylor GE, Turner RR & Schroeder WH (1992) Atmosphere/surface exchange of mercury in a forest: Results of modeling and gradient approaches. J. Geophys. Res. 97: 2519–2528
Moore TR, Bubier JL, Heyes A & Flett RJ (1995) Methyl and total mercury in boreal wetland plants, experimental lake area, northwestern Ontario. J. Environ. Qual. 24: 845–850
Munthe J, Haraldsson C, Parkman H, Lee YH & Iverfeldt Å (Manuscript in prep) A stable isotope study of methylmercury production and turnover in forests soils. Methods development and initial results
Munthe J, Hultberg H & Iverfeldt Å (1995) Mechanisms of deposition of methylmercury and mercury to coniferous forests. Water Air Soil Poll. 80: 363–371
Munthe J, Lee YH, Hultberg H, Iverfeldt Å, Borg GCH & Andersson BI (1997) Cycling of mercury and methylmercury in the Gårdsjön catchments. In: Skeffington R & Hultberg H (Eds) Experimental Reversal of Acid Rain Effact: The Gårdsjön Covered Catchment Experiment. John Wiley & Sons, London. In press
Pettersson C, Bishop KH, Allard B & Lee YH (1995) Relations between organic carbon and methylmercury in humic rich surface waters from Svartberget catchment in northern Sweden. Water Air Soil Poll. 80: 971–979
Rudd JWM (1995) Sources of methyl mercury to freshwater ecosystems: A review. Water Air Soil Poll. 80: 697–713
St. Louis VL, Rudd JWM, Kelly CA, Beaty KG, Bloom NS & Robert JF (1994) Importance of wetlands as sources of methyl mercury to boreal forest ecosystems. Can. J. Fish. Aquat. Sci. 51: 1065–1076
St. Louis VL, Rudd JWM, Kelly CA, Beaty KG, Robert JF & Roulet NT (1996) Production and loss of methylmercury and loss of total mercury from boreal forest catchments containing different types of wetlands. Environ. Sci. Technol. 30: 2719–2729
Verta M (1990) Mercury in Finnish forest lakes and reservoirs: Anthropogenic contribution to the load and accumulation in fish. In: Publications of the Water and Environment Institute, National Board of Water and the Environment, Finland, 6
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Lee, Y., Bishop, K., Munthe, J. et al. An examination of current Hg deposition and export in Fenno-Scandian catchments. Biogeochemistry 40, 125–135 (1998). https://doi.org/10.1023/A:1005926321337
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DOI: https://doi.org/10.1023/A:1005926321337