Table 2.

Variation in r for all species with E<0, for phylogenetic groups containing species with E<0 (o, herbs from disturbed habitats; f, understorey forest herbs; t, trees; s, shrubs), and for all species with E>0. (n, number of species.)

	mean	s.d.	variance	s.e.m.	N
E<0	0.037	0.191	0.037	0.025	59
f	0.072	0.172	0.029	0.046	14
o	0.033	0.261	0.068	0.052	25
s	0.017	0.081	0.007	0.033	6
t	0.021	0.062	0.004	0.017	14
E>0	0.452	0.283	0.080	0.107	7