State of knowledge of earthworm communities in German soils as a basis for biological soil quality assessment

摘要: Within a project aiming to improve the preconditions for protection of habitat function soils in Germany, database Bo-Info was established, which soil-biological data from permanent soil monitoring sites several German states as well literature compiled. Soil-biological on occurrence and abundance earthworms were analysed with respect their distribution relation site (habitat type, land use) properties (pH, texture, organic matter). Reliable available 294 sites. In total, 32 species (all known occur Germany) present database, 10 very common. Ecological preferences regarding use, pH, matter (SOM) texture derived these species. The at ecological-group level is determined by use pH value less texture. A clear distinction between epigeic one hand endogeic anecic other found SOM. Earthworm communities types representing four major (grassland, crop sites, deciduous coniferous forests) clearly differed. Using three examples different forms, typical could be identified next sub-division types, provided sufficient number available. As result, qualitative expectation (= reference) values (species richness composition) are proposed most important (e.g. grassland forests). Due ecological relevance, biological classification assessment recommended.