Project groups


Given that climate change will lead to significant changes in environmental conditions for stream-dwelling invertebrates. Predictions about the effects of temperature and oxygen-content as well as discharge (particularly in high and low water) are required. On the basis of a range of laboratory and field studies we investigate the significance of these parameters for the dispersal of selected invasive and indigenous benthic invertebrates. Field-studies are conducted mainly at the LTER site of the Rhein-Main Observatory, which - like the entire Rhein-Main-system - is significantly affected by the Rhein-Main-Donau-channel, opened in 1992. This project is carried out in close cooperation with the project C5.4.
• Identification of suitable model-organisms of invasive and indigenous macroinvertebrates
• Determination of the ability of model-species to disperse in selected steam-reaches of the Rhein-Main Observatory using metadata analysis

• Identification of limiting factors for the dispersal of selected model-organisms on the basis of laboratory experiments
• Identification of limiting factors for the dispersal of selected model-organisms on the basis of field studies
• Development of a model for the prediction of regional-scale distribution range shifts in model-species


Dr. Stefan Stoll, Researcher


Früh, D., Jähnig, S. & P. Haase : Welche abiotischen Faktoren kontrollieren die Verbreitung von Neozoen? - Deutsche Gesellschaft für Limnologie (DGL) - Tagungsbericht 2009: 34-36.

Früh, D., Stoll, S. & P. Haase (2012) : Physicochemical and morphological degradation of stream and river habitats increases invasion risk. - Invasion Biology 14: 2243-2253.

Kail, J., Jähnig, S.C. & D. Hering (2009) : Relation between floodplain land use and river hydromorphology on different spatial scales - a case study from two lower-mountain catchments in Germany. - Fundamental and Applied Limnology (Archiv für Hydrobiologie) 174/1: 63–73.

Lorenz, A., Jähnig, S. & D. Hering (2009) : Re-Meandering German Lowland Streams: Qualitative and Quantitative Effects of Restoration Measures on Hydromorphology and Macroinvertebrates. - Environmental Management 44:745–754.

Pauls, S.U., Theissinger, K., Ujvarosi, L., Balint, M. & P. Haase (2009) : Patterns of population structure in two closely related, partially sympatric caddisflies in Eastern Europe: historic introgression, limited dispersal, and cryptic diversity. - Journal of the North American Benthological Society 28(3):517–536. 

Stoll, S. & P. Beeck (2011) : Post-release stranding rates of stocked larval allis shad (Alosa alosa) larvae exposed to surface waves. -Journal of Applied Ichthyology 27 (Suppl. 3): 41-44.