Research Article

Wild Bumblebee (Bombus) Diversity and Nosema (Microsporidia: Nosematidae) Infection Levels Associated with Lowbush Blueberry (Vaccinium angustifolium) Production and Commercial Bumblebee Pollinators

Figure 7

Relative abundances of bumblebee species found in blueberry fields for five years: 1961–63, 1997, 1998, 2009, 2010, and 2011. Psithyrus not shown. B. impatiens from fields with active commercial bumblebee colonies not included. Data for 1961–63 from Boulanger et al. [16].
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