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2.406 ± 1.062). However, as suggested by the significant interaction between
plant and pollination treatments, the pattern was more complex (Figure 3A). In
fact, pollination treatments had no effect on recruitment richness in open-flower
plant treatment (Figure 3A, left). In the tubular-flower plant treatment, recruit-
ment in the syrphid fly treatment tended to be lower than in the other pollination
treatments (Figure 3A, centre). But the positive effect of pollinator functional
diversity was obvious in the plant treatment that contained both plant functional
groups (Figure 3A, right). In the mixed plant treatment, recruitment richness
under the most functionally diverse pollination treatment was substantially above
that in the two other treatments.
Figure 3.
Effects of Pollination Treatments on Plant Recruitment.
Effects of pollination by syrphid flies (S), bumble bees (B), or both (S + B) on (A) recruitment richness (mean
number of plant species present as seedlings in a quadrat) and (B) recruitment density (mean number of plant
individuals present as seedlings in a quadrat) in the various plant treatments. Error bars represent one standard
error. Lower-case letters indicate statistically significant differences among pollination treatments within a plant
treatment (Bonferroni-adjusted t-test, p < 0.05).
