Table 3.
Long lived speciesa | Herbaceousb | Woodyc | ||||
Variable | R ‡ | ΔR2 † | R | ΔR2 † | R | ΔR2 † |
Stature | 0.162* | -- | 0.152NS | 0.029NS | ||
Growth form d | 0.239*** | 0.057 | NC | NC | ||
Perenniality e | NC | 0.423*** | NC | |||
Pollination mode f | 0.082NS | 0.027NS | 0.020NS |
a N = 230 b N = 76 c N = 185
0.01<P < 0.05 and NS for P > 0.05.
d Herbaceous species were coded 0 and woody species 1; e Short-lived species (annuals and biannuals) were coded 0, and long-lived species (perennials species) were coded 1; f The mode of pollination was coded 0 for abiotic (wind- or water-dispersed) and 1 for biotic (animal-dispersed)
‡ correlation coefficient of simple regression analyses
† multiple regression analyses (stepwise option using all significant variables from the simple regression analyses): ΔR2 represents the gain of R2 (proportion of variation explained by the variables) when the variable is incorporated into the model, "--" indicates that the variable does not enter in the model, after the integration of the most explicative variables.