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Summary

The effects of polluted and leached snowmelt waters on an upland soil bacterial community were determined in laboratory soil cores using simulated solutions. 24 isolate characters were determined before, and after, 32 days of solution application.

The soil bacterial community exposed to polluted meltwaters (pH 2.3) showed a significant increase in its ability to metabolise the carbohydrates tested, and a significant decrease in the number of Gran-positive coccal forms. The percentage of Micrococcus isolates declined from 27% of the community to 2%, whilst Pseudomonas and Enterobacteriaceae isolates increased in number.

The soil bacterial community exposed to leached snowmelt waters (pH 5.4) showed a significant increase in biochemical potential, but the ability to metabolise carbohydrates showed no change.

Soil bacteria, Polluted snow, Snowmelt, Acidic deposition, Functional properties, Community change

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© 1987 Federation of European Microbiological Societies
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