Factors Affecting the Presence and the Diversity of Bryophytes in the Petrifying Sources Habitat (7220) in Wallonia and the Brussels-Capital Region, Belgium

Table 8

Results of the AIC stepwise model selection for probability of presence of Brachythecium rivulare showing the best significant variables selected based on their weight.

Variable	Weight of the variable	Averaged coefficient	Unconditional standard error
Ca	0.894	0.023	0.010
PO4	0.579	−9.225	7.229
Slope moderate	0.468	−0.193	0.369
Slope steep	0.468	−0.897	0.650
pH_mean	0.354	0.354	0.414
NH4	0.351	−7.123	10.000
Cover	0.292	0.002	0.003
Zonecont	0.285	−0.149	0.293
Mg	0.262	0.004	0.010
NO3	0.251	0.009	0.025
NO2	0.240	0.007	0.054