Where the Wild Bees Are: Documenting a Loss of Native Bee Species between the 1800s and 2010s | Scientific American
Moritz Stefaner put together a very interesting infographic for Scientific American which succinctly illustrates a variety of wild bee statistics for Carlinville, Ill. At a glance you can see many types of bees have disappeared and that foraging behaviour has drastically changed in the last 120 years.
The source for the data comes from this paper: PLANT-POLLINATOR INTERACTIONS OVER 120 YEARS: LOSS OF SPECIES,CO-OCCURRENCE, AND FUNCTION,” BY LAURA A. BURKLE, JOHN C. MARLIN AND TIFFANY M. KNIGHT, IN SCIENCE, VOL. 339; MARCH 29, 2013