Biology Reference
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tree individuals within categories of pollination systems showed similar trends
(Figure 2A), although for some categories the differences between fragments and
control plots were even more dramatic than for species richness (e.g. hawkmoth
and vertebrate pollination). Fragments and control plots also differed dramati-
cally when pollination systems were pooled into two categories of pollen vectors-
generalists and specialists [sensu 65]. In summary, fragments had proportionately
more tree species pollinated by generalist vectors (66.43±14.08%) than control
plots (58.18±7.87%; t = 1.616; d.f. = 18; P = 0.06); the relative abundance indi-
viduals pollinated by generalists was also higher in fragments than control plots
(71.71±16.5% vs. 46.10±15.53, U = 13.0; P = 0.0052).
Figure 2.
Effect of habitat fragmentation on pollination systems, floral sizes and floral rewards.
Percentage of
tree individuals within categories of pollination systems (A; N = 137 spp.), floral sizes (B; N = 105
spp.), and floral rewards (C; N = 124 spp.) at 10 fragments and 10 control plots of an Atlantic forest landscape,
northeastern Brazil. Frequencies represented by boxes that are significantly different are indicated with asterisks:
*P<0.05; **P<0.01; ***P<0.001.
