Over the past decades, pollinator populations declined significantly for a variety of reasons including, but not limited to, habitat loss, use of the "cides" (herbicides, insecticides, pesticides), and common garden & landscape practices.
In the Southern Farm & Garden spring 2018 issue, a six-page feature article, Restoring Pollinator Populations, gives an overview of challenges facing pollinator populations along with tips for pollinator-friendly gardens.