PD Dr. Martin Schaefer
Prof. Dr. Nico Blüthgen
1. Signal diversity changes with land use.
2. Flower colour as filter structures the pollinator community.
3. A decreasing signal diversity increases niche overlap and leads to directed absence of special pollinator groups.
4. The reduction in signal diversity extends the searching time of pollinators.
5. Rare plant species have non-random flower colours.