Dr. Sonja Jähnig is research group leader at the Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB, Berlin), Department of Ecosystem Research. She holds a Diploma in Environmental Sciences and a PhD from University of Duisburg-Essen. Her research focuses on global change effects in river ecosystems, large scale patterns of freshwater biodiversity and river health, and traits and functions in river ecosystems. Sonja is and has been actively involved in a number of European and international projects funded e.g. by the DFG and BMBF (current: GLANCE), especially interested at the interface of hydrology and hydrobiology. She is currently leading the work package 7 - Forecasting Biodiversity and Ecosystem Service Provision and is additionally involved into the WP 3, 4, 5 and 8.