Thiobacilli and sulphate production from inorganic sulphur compounds in upper horizons of spruce forest soils |
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Authors: | A. Lettl O. Langkramer V. Lochman M. Jakš |
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Affiliation: | 1. Forestry and Game Management Research Institute, 255 01, Zbraslav-Strnady, Czechoslovakia
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Abstract: | The species representation of Thiobacilli was investigated in horizons F, H and A of spruce forest at ten localities. Concentrations of Thiobacilli in the selected localities and ability of the soils to oxidize sulphur compounds to sulphate were determined. Horizons F exhibited a high oxidative activity, a lower activity was found in horizon H and the lowest one was detected in horizon A. The activities showed spring and autumn maxima. Horizons F, H and A contained 104-105, 102-103 and 10l-103, respectively, Thiobacilli in 1 g dry soil.Thiobacillus thioparus was detected in all three horizons from all localities,T.thiooxidans was found in all horizons F, only in some horizons H and was not detected in horizons A.T.novellus was found only in some samples without any relation to the horizons,T. denitrificans was not detected at all. |
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