The effect of studied factors on species richness.

The effect of local habitat conditions, current and historical landscape structure on species richness and the direction of the effect (+/−). The amount of explained variance by the single independent variables with different covariates is presented; n.s. is not significant (p>0.05), – not tested because previously not significant. Df error = 108 (respectively, 106 for substrate and 107 for slope and for PDSI) for all factors significant without covariates, Df error = 105 (respectively, 103 for substrate and 104 for slope and for PDSI) for all factors significant when using coordinates as covariates and Df error = 87 (respectively, 85 for substrate and 86 for slope and for PDSI) for all factors significant when using coordinates and all significant factors from the first analyses as covariates. For the abbreviation explanations, see Table 1. *(+) for rock, (–) for scree.