Nature is no longer a free commodity when it comes to crop pollination. As we increase crop acreage requiring insect pollination, bees must be mass reared to meet demand. We cannot rely on natural populations of bees and other pollinators for large crops because there are simply not enough out there. Through our land use, we have decreased natural nesting sites and the diversity of plants that support our native and introduced pollinators
Managing alternative pollinators: A handbook for beekeepers, growers, and conservationists
Year: 2011
