The nine flower strips monitored for this study (modified from https://www.openstreetmap.org, using QGIS 3.8.2 (QGIS Development Team 2019) and Munich’s bee records (sightings and/or specimens) between 1997 and 2017.
Part of: Hofmann MM, Renner SS (2020) One-year-old flower strips already support a quarter of a city’s bee species. Journal of Hymenoptera Research 75: 87-95. https://doi.org/10.3897/jhr.75.47507