Flower constancy
There was a statistically significant interaction between the effects of
bee species and period on the percentage of flower constant foragers at
both the morphotype and family levels (Table 3; Fig 2). During all
periods, except period 3, a greater proportion of honey bee foragers
collected pollen from one plant morphotype or family (e.g. higher flower
constancy) relative to bumble bees (Fig. 2). In period 3, rates of
flower constancy were similar between the two bee species (Fig. 2).
Flower constancy did not vary among sites for either bee species (Table
3).