Linkages between canopy throughfall, soil solution, and seepage lake chemistry in a Northern Michigan Lake
Lewin J and Stottlemyer R. 1994. Linkages between canopy throughfall, soil solution, and seepage lake chemistry in a Northern Michigan Lake. Bulletin of the Ecological Society of America. 75(2):131
Precipitation, throughfall, soil solution, and seepage lake chemistry were quantified for five years at Legion Lake, a clear-water seepage lake in Pictured Rocks National Lakeshore, MI. The objective was to identify mechanisms responsible for the acidic (pH= 4.8) and poorly buffered (ANC = -10.6 seq L-1) lake condition. Lake NH4+ and N03- concentrations peaked with spring melt, but H+ and SO4 2- did not vary. Except for SO4 2-, lake concentrations of other contaminants were significantly lower than in precipitation. Overall, soil solution anion concentrations were most similar to lake concentrations. Benthic cores show evidence of anthropic inputs, especially Pb, and 10 fold the sedimentation rate of similar clear-water, oligotrophic lakes. The high flocculation rates likely are due to precipitation of humic acid inputs supplied from conterminous bogs.
- Type
- Journal Article
- Authors
- Lewin, J; Stottlemyer, Robert
- Units
- ISRO
- Keywords
- Acidification, Chemistry, leaching(soil), Physical Sciences, Pollution sources, Water Quality