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. 2013 Jul 24;8(7):e69819. doi: 10.1371/journal.pone.0069819

Figure 3. Effects of bee supplementation on flower visitation frequency.

Figure 3

Mean (±SEM) Bombus impatiens visitation frequency to pumpkin flowers in fields supplemented with B. impatiens, or Apis mellifera did not differ significantly from visitation frequency in control fields (A). Both years are combined here for simplicity. Mean (±SEM) A. mellifera visitation frequency to pumpkin flowers in fields supplemented with B. impatiens, or A. mellifera did not differ significantly from visitation frequency to flowers in control fields (B).