Effect of copper on biomass of soil micromycetes
1996
Dugova, O. (Slovenska Akademia Vied, Bratislava (Slovakia). Ustav Ekobiologie)
Quantitative transformation of soil micromycete biomass was investigated according to the loading of soil by copper doses of 100, 200, 400, 800 and 3,000 mg Cu kg** (-1) of soil. Quantitative determination of soil micromycetes was performed by the direct microscopic method with the aid of membrane filters. The effect of different copper concentrations in soils was investigated by model experiments. Copper doses were specified according to the concentration found in soils from different localities in Slovakia. The results showed a very weak inhibitory effect of copper at concentrations ranging from 100 to 400 mg Cu kg** (-1) of soil on micromycete biomass. Higher copper doses (800 mg Cu) inhibited biomass dynamics more markedly; and a clear toxic effect was found at the dose of 3,000 mg Cu. In this case the toxicity of copper was very distinct, especially in mycelium, the active part of the biomass
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