Monday, December 11, 2006
D0100

The value of roadside restorations in the conservation of native bees (Hymenoptera: Apiformes)

Jennifer L. Hopwood, jhopwood@ku.edu, University of Kansas, Department of Ecology and Evolutionary Biology, 1200 Sunnyside Avenue, Lawrence, KS

Bees are significant pollinators in both natural plant communities and agricultural settings, and as such are ecologically as well as economically valuable. With concerns over declines in pollinator populations, finding ways to increase suitable habitat for these important pollinators is vital. In highly human-impacted environments, marginal habitats (hedgerows, roadsides, crop margins) may be valuable habitat for bees, providing foraging and nesting opportunities in landscapes in which resources are otherwise scarce. Roadsides restored to native vegetation may have conservation value to native bees because such roadsides have reduced exposure to pesticides, support plants that serve as pollen and nectar sources, and are unplowed and therefore are potential nesting sites for ground nesting bees. Comparisons were made in Northeastern Kansas between seven roadsides seeded with native vegetation and seven with weedy plants. The effects of floral resources and roadside characteristics on bee abundance and richness were also investigated, a prairie remnant was sampled for comparison, and potential biases of collection methods were considered. Roadsides restored to native vegetation were found to support greater bee abundance and richness than weedy roadsides, and results indicate that increasing floral richness, floral abundance and percent of bare ground encourages greater bee abundance and richness. Little difference was found between collections made in a prairie remnant and those along restored roadsides. Results suggest that restoring roadsides to native vegetation will benefit bee populations and pollinator conservation efforts by providing much-needed habitat.


Species 1: Hymenoptera