Bumble Bee ( Hymenoptera : Apidae ) Diversity and Abundance in Tallgrass Prairie Patches : Effects of Local and Landscape Floral Resources

by Heather M Hines, Stephen D Hendrix
Environ . Entomol ()
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See, stats, and : https : / / www . researchgate . net / publication / 233564733 Bumble (Hymenoptera: Apidae) Diversity Prairie : Effects Landscape ARTICLE Impact : 1 . 3 : 10. 1603 / 0046 - 225X - 34 . 6 . 1477 CITATIONS 49 READS 111 2 , INCLUDING : Stephen . Hendrix University 45 , 014 SEE Available : Stephen . Hendrix Retrieved : 11 COMMUNITY AND ECOSYSTEM ECOLOGY ABSTRACT Conservation of biodiversity recently has focused on the importance of pollinator services for the preservation of threatened plant species in fragmented landscapes such as the tallgrass prairie biome . In this study , we assessed the inßuence of local and landscape ßoral resource diversity and abundance on bumble bee (Bombus Latreille) diversity and abundance at eight tallgrass prairie sites in Iowa . We calculated a landscape ßoral resource index (LRI) for areas within 500 - and 700 - m radii of each site based on the density and diversity of ßowering plant species in polygons of different landscape elements . LRI values , areas of each landscape habitat type , and the diversity and abundance of bumble beeÐ used ßowering ramets at each site were compared with bumble bee diversity and abundance at the site . Bumble bee diversity was best predicted by a model including the LRI of grasslands surrounding sites at 500 m , which explained most of the variance , and the abundance of bumble beeÐvisited plants at the site . Bumble bee abundance was best predicted by a model including the percent of the landscape in grasslands at the 700 - m radius , which explained most of the variance , and the abundance of bumble beeÐvisited plants at the site . Our results reveal that bumble bee diversity at tallgrass prairie patches is inßuenced by the availability of resources in the landscape , particularly in grasslands , and to a lesser extent by site characteristics , indicating the importance of spatial scale for creating successful pollinator management plans in fragmented landscapes .

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