Urban ecology is a growing research field. To find orientation in the information jungle on this topic, a team led by IGB and Freie Universität Berlin (FU Berlin) has created a map of 62 important research hypotheses in urban ecology. Among them are the idea of the daring city dweller, life on credit or the biological monotony of cities. Research has yet to show how robust the hypotheses are and to which cities they apply. The new overview provides an important basis for this endeavor. It is openly available in Wikidata.