Abstract
Phosphorus (P), aluminum (Al), and iron (Fe) stream chemistry were assessed for high discharge snowmelt events at the Bear Brook Watershed, Maine (BBWM) during December 2001 and February 2002 and compared with results from a January 1995 study of the same streams. The West Bear catchment has been subjected to artificial acidification since 1989. The East Bear catchment is the untreated reference. Total (acid soluble) Al, Fe, and P were positively correlated with discharge during the 2001–2002 events. However, dissolved P concentrations remained low (≤0.1 μmol L-1) during high discharge events as pH decreased in both streams.For example, in 2001, total P concentration increased to 1.7 μmol L-1 during the rising limb of the hydrograph in West Bear, approximately five times the value in East Bear. During the same event, in West Bear and East Bear dissolved Al concentrations increased to 21 and 6.3 μmol L-1, respectively, while total Al concentrations increased to 166 and 30 μmol L-1, respectively. Dissolved Fe concentrations remained ≤0.9 μmol L-1 in both streams during all study events. However, total Fe concentrations in 2001 increased to 239 and 4.1 μmol L-1 for West Bear and East Bear, respectively. Total Al and Fe declined parallel to total P after peaking during all study periods. Nearly all of the base cations were in dissolved form during the three events, indicating that total Al in West and East Bear Brooks is not associated with primary minerals such as feldspars. We conclude that particulate Al, Fe, and P are chemically linked during transport at high discharge in these episodically and chronically acidified streams.
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References
Borg, H.: 1986, ‘Metal speciation in acidified mountain streams in central Sweden’, Water, Air, Soil Pollut. 30, 1007-1014.
Fernandez, I. J. and Struchtemeyer, R. A.: 1985, ‘Chemical characteristics of soils under spruce-fir forests in eastern Maine’, Can. J. Soil Sci. 65, 61-69.
Kahl, J. S., Norton, S. A., Haines, T. A., Rochette, E. A., Heath, R. H. and Nodvin, S. C.: 1992, ‘Factors controlling episodic acidification in low-order streams in Maine, U.S.A.’, Environ. Pollut. 78, 37-44.
Kopáček, J., Hejzlar, J., Borovec, J., Porcal, P. and Kotorová, I.: 2000, ‘Phosphorus inactivation by aluminum in the water column and sediments: Lowering of in-lake phosphorus availability in an acidified watershed-lake ecosystem’, Limnol. Oceanogr. 45, 212-225.
Likens, G. E., Bormann, F. H., Pierce, R. S., Eaton, J. S. and Johnson, N. M.: 1977, Biogeochemistry of a Forested Ecosystem, Springer-Verlag, New York, pp. 146.
Meyer, J. L. and Likens, G. E.: 1979, ‘Transport and transformation of phosphorus in a forest stream ecosystem’, Ecology 60, 1255-1269.
Munn, N. and Prepas, E.: 1986, ‘Seasonal dynamics of phosphorus partitioning and export in two streams in Alberta, Canada’, Can. J. Fish. Aquat. Sci. 43, 2464-2471.
Norton, S. A. and Henriksen, A.: 1983, ‘The importance of CO2 in evaluation and effects of acidic deposition’, Vatten 39, 346-354.
Norton, S. A., Brownlee, J. C., Kahl, J. S.: 1992, ‘Artificial acidification of a non-acidic and an acidic headwater stream in Maine, U.S.A.’, Environ. Pollut. 77, 123-128.
Norton, S. A., Fernandez, I. J., Kahl, J. S. and Reinhardt, R. L.: 2004, ‘Acidification trends and the evolution of neutralization mechanisms through time at the Bear Brook Watershed in Maine (BBWM), U.S.A.’, Water, Air, Soil Pollut.: Focus(2004).
Prairie, Y. T. and Kalff, J.: 1988, ‘Dissolved phosphorus dynamics in headwater streams’, Can. J. Fish. Aquat. Sci. 45, 200-209.
Roy, S., Norton, S., Fernandez, I. and Kahl, J.: 1999, ‘Linkages of P and Al export at Bear Brook Watershed in Maine’, Environ. Monit. Assess. 55, 133-147.
Stumm, W. and Morgan, J.: 1996, Aquatic Chemistry Chemical Equilibria and Rates in Natural Waters, John Wiley & Sons, Inc., New York, pp. 1022.
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Reinhardt, R.L., Norton, S.A., Handley, M. et al. Dynamics of P, Al, and Fe during High Discharge Episodic Acidification at the Bear Brook Watershed in Maine, U.S.A.. Water, Air, & Soil Pollution: Focus 4, 311–323 (2004). https://doi.org/10.1023/B:WAFO.0000028362.48966.17
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DOI: https://doi.org/10.1023/B:WAFO.0000028362.48966.17