Monitoring and Habitat Assessment of Declining Bumble Bees in Twin Cities Metro Roadsides

This research has four objectives. First, we will sample bumble bees in roadside areas at 30 survey locations systematically distributed throughout the Twin Cities metro area in an effort to detect the area occupied by B. affinis and other declining bumble bees and assess their use of roadside habitat. Sampling will be rapid and broad-scale giving relative abundances of bumble bee species, rather than estimates of absolute population sizes. Recent B. affinis sightings will be used to prioritize survey locations. Second, we will estimate population sizes of bumble bee species at eight of the 30 locations using a mark-recapture approach. This technique provides a more robust population size estimate. These sites will be chosen based on proximity to recent records of B. affinis. Third, we will compare rapid assessment and mark-recapture methods to develop a long-term monitoring protocol to be incorporated into the Minnesota Bumble Bee Survey and inform national bumble bee survey efforts (managed by Co-PI Evans). Fourth, we will characterize floral communities, land-use type and roadside management practices at survey locations. We will then examine whether these characteristics are related to variation in bumble bee population size and species composition. Results of this study can be used to guide roadside management to promote conservation of declining bumble bee species. As keystone species, bumble bees benefit many other organisms through their role as major pollinators. This includes not only flowering plants but other organisms such as birds that benefit from seed production. Further, bumble bees are among the most effective crop pollinators and are critical to the health of urban agroecosystems.


    • English


    • Status: Active
    • Contract Numbers:

      1003325 WO#30

    • Sponsor Organizations:

      Minnesota Department of Transportation

      395 John Ireland Boulevard
      St Paul, MN  United States  55155
    • Project Managers:

      Klemann, Beth

    • Performing Organizations:

      University of Minnesota Department of Entomology

      1980 Folwell Ave.
      St. Paul, MN  United States  55108
    • Principal Investigators:

      Cariveau, David

    • Start Date: 20170629
    • Expected Completion Date: 20190831
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01643944
    • Record Type: Research project
    • Source Agency: Minnesota Department of Transportation
    • Contract Numbers: 1003325 WO#30
    • Files: RiP, STATEDOT
    • Created Date: Aug 23 2017 12:40PM