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times lower (8.17±9.21%) than control plots (19.58±6.44%) (t = −3.211; d.f. =
18; P = 0.002). Difference was even more marked when the relative abundance
of tree species with nocturnal anthesis is analyzed (4.93±6.67% in fragments vs.
21.18±11.41% in control plots) (t = −3.889; d.f. = 18; P = 0.001).
Figure 3. Effect of habitat fragmentation on floral types, sexual systems and reproductive systems.
Percentage of tree individuals within categories of floral types (A; N = 111 spp.), sexual system (B; N = 129 spp.),
and reproductive system (C; N = 79 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.
Both habitats, fragments and control, were dominated by hermaphrodite
species and showed similar scores for species within the five categories of sexual
systems (Table 2). However, habitats were absolutely contrasting with respect to
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