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

Table 4

Results of the AIC stepwise model selection for probability of presence of Palustriella commutata showing the best significant variables selected based on their weight using the complete dataset.

Variable	Weight of the variable	Averaged coefficient	Unconditional standard error
Moderate slope	0.902	1.116	1.002
Steep slope	0.902	3.152	1.010
Cover	0.797	−0.022	0.011
pH_mean	0.592	−1.293	0.947
NH4	0.387	−13.210	14.475
NO3	0.379	0.063	0.066
Ca	0.336	−0.006	0.007
PO4	0.283	1.874	3.610
NO2	0.254	−0.048	0.091
Mg	0.248	−0.004	0.014
Zonecont	0.243	0.0097	0.357