Created cooperatively by the University of Kassel and the GSF-National Research Center for Environment and Health in Germany, and maintained by Joachim Benz, this site currently contains 481 ecological models. Users can search the database by model name or subject (e.g., population dynamics, hydrology), browse a brief list of related literature, or enter information on models not currently in the database. Professionals in the life and physical sciences can find common ground at this site.