How quickly do flower strips in cities help the local bees?

Image of roadside flowers.

(ScienceDaily/Pensoft Publishers) Many cities are introducing green areas to protect their fauna. Among such measures are flower strips, which provide support to flower-visiting insects. According to the first quantitative assessment of the speed and distance over which urban flower strips attract wild bees, scientists from the University of Munich found that one-year-old flower strips attracted a third of the 232 species recorded from Munich since 1997.

Sugar-poor diets wreak havoc on bumble bee queens’ health

Image of common eastern bumble bee.

(University of California, Riverside) Research indicates that a queen bumble bee’s diet can impact how quickly her brood develops, or whether she’s able to live through hibernation. A new study from Dr. Hollis Woodard and her team at UC Riverside demonstrates that without adequate sugar, the queen’s fat body, which functions like a human liver, does not correctly produce the enzymes required for healthy metabolism and detoxification from pesticides.

New study helps California’s bumble bees by identifying their favorite flowers

Image of bumble bee in lupines.

(Entomology Today) “We discovered plants that were big winners for all bumble bee species but, just as importantly, plant species that were very important for only a single bumble bee species. This study allowed us to provide a concise, scientifically based list of important plant species to use in habitat restoration that will meet the needs of multiple bumble bee species and provide blooms across the entire annual life cycle.”