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Effects of road deicing salts on soil microorganisms

Author

Listed:
  • J. Černohlávková

    (RECETOX - Research Centre for Environmental Chemistry and Ecotoxicology, Masaryk University, Brno, Czech Republic)

  • J. Hofman

    (RECETOX - Research Centre for Environmental Chemistry and Ecotoxicology, Masaryk University, Brno, Czech Republic)

  • T. Bartoš

    (RECETOX - Research Centre for Environmental Chemistry and Ecotoxicology, Masaryk University, Brno, Czech Republic)

  • M. Sáňka

    (RECETOX - Research Centre for Environmental Chemistry and Ecotoxicology, Masaryk University, Brno, Czech Republic)

  • P. Anděl

    (Evernia, s. r. o., Liberec, Czech Republic)

Abstract

In this study, the effects of road salting on the quality of forest soils near the road were monitored in the Krkonoše Mountains (Czech Republic). Physical, chemical properties and microbial parameters of soils were determined and the toxic potentials of soil water extracts were evaluated using the bacterial tests (Microtox and Pseudomonas putida growth inhibition test). Increased concentrations of Na+ ions (up to 100 mg/kg) and pH values up to 8 were found closer to the road. Microbial biomass and respiration activity were significantly reduced at the roadside (ANOVA; P < 0.05), and the metabolic quotients showed that the microbial community was apparently under stress. Large stimulation of Pseudomonas putida growth was determined, especially for salinized samples closest to the road. Oppositely, results showed the unsuitability of bacteria toxicity tests in such cases of pollution. Assessment of intrinsic soil microbial communities is more ecologically relevant and shows the effects that cannot be detected by bacterial toxicity tests.

Suggested Citation

  • J. Černohlávková & J. Hofman & T. Bartoš & M. Sáňka & P. Anděl, 2008. "Effects of road deicing salts on soil microorganisms," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 54(11), pages 479-485.
    • Handle: RePEc:caa:jnlpse:v:54:y:2008:i:11:id:431-pse
    DOI: 10.17221/431-PSE
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    Cited by:

    1. J. Hofman & E. Trávníčková & P. Anděl, 2012. "Road salts effects on soil chemical and microbial properties at grassland and forest site in protected natural areas," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 58(6), pages 282-288.

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