Abundance and Diversity of Native Bumble Bees Associated with Agricultural Crops: The Willamette Valley Experience
There are widespread concerns about declining populations of bumble bees due to conversion of native habitats to agroecosystems.Certain cropping systems, however, provide enormous foraging Gift Card resources, and are beneficial for population build up of native bees, especially eusocial bees such as bumble bees.In this review, we present evidence