We work with aquatic systems along the entire salinity gradient, from small streams, ponds and lakes to near-shore and pelagic systems in the oceans. At the Aquatic Ecology research group we perform research at a multitude of organizational levels, from molecules to organisms and from individual behaviours to ecosystem processes. Presently, we are involved in research on e.g. climate change effects on aquatic systems, regime shifts in shallow lakes, dispersal and migration of aquatic organisms, population genetics, predator-prey interactions, effects of pesticides and endocrine disruptors and sustainable fisheries. We have strong national and international collaborations. We believe that our ability to deal with all aquatic systems gives us a tremendous advantage in meeting the future challenges in basic and applied science as well as in education.