The group of Chemical Ecology and Ecophysiology at the Limnological Institute is lead by PD Dr. Dominik Martin-Creuzburg since 2010. Most of our research uses Cladocera as freshwater model organisms. Primarily we focus on understanding the ecological significance of essential biochemicals in aquatic food webs. We investigate the trophic transfer of these nutrients from primary producers to higher trophic levels, explore life history consequences of dietary deficiencies using various consumers, and try to assess potential effects on food web processes.