Ökologische Charakterisierung ausgewählter Enchytraeenarten hinsichtlich relevanter Bodeneigenschaften

The aim of this contribution was the ecological characterization of 32 selected terrestrial Central-European enchytraeid species regarding factors of land use, pH-value, grain-size distribution, humus form, and soil moisture. The background of this characterization is generated by the so-called Soil Biological Site-Classification (abbreviated BBSK), a concept for the soil-biological assessment of soils. The crucial point within this concept is the comparison of the theoretically expected soil biocoenosis with the biocoenosis actually detected at a single site. Intending to obtain a simplified management of the parameters mentioned, these were each divided into three to five classes. The data-basis for the ecological characterization was formed by analysing suitable sources of literature with both biological and abiotic data given for one site. The result of the analysis was the frequency of a single species regarding the classes of the viewed soil parameters. On the basis of these results, the enchytraeid coenosis of three adjacent Bavarian sites of different use was predicted exemplarily and the enchytraeid community of these sites was investigated. The comparison of the predicted and detected coenoses showed that the sureness of the forecast varied between the different land uses: for wood and grassland, the prognosis was very precise and satisfactory, whereas the forecast for the agricultural site differed quite extensively. This was mainly due to the narrow data basis for agricultural sites.