Typology of streams in Germany based on benthic invertebrates: Ecoregions, zonation, geology and substrate |
| |
| Authors: | Armin Lorenz Christian K Feld Daniel Hering |
| |
| Institution: | University of Duisburg-Essen, Institute of Ecology, Department of Hydrobiology, Essen, Germany |
| |
| Abstract: | Based on 390 benthic invertebrate samples from near-natural streams in Germany we defined eight stream type groups by Non-metric multidimensional scaling (NMS). The taxa lists were restricted to Mollusca, Ephemeroptera, Odonata, Plecoptera, Coleoptera and Trichoptera species and evaluated on presence/absence level. At genus level, streams located in the lowlands differ from streams in lower mountainous areas and the Alps, while the two latter groups were undistinguishable. At species level, a clear separation of different stream size classes is visible in the lowlands; a second gradient is related to the bottom substrate. Streams in the Alps can be distinguished from streams in lower mountainous areas at species level. Within the lower mountainous regions a size gradient is detectable, a less obvious gradient indicates catchment geology. The resulting “bottom-up” stream typology is compared to other stream typological systems in Germany. |
| |
| Keywords: | Typology benthic invertebrates Germany ecoregion NMS |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
