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

Table 5

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

Variable	Weight of the variable	Averaged coefficient	Unconditional standard error
Canopy cover	0.931	−0.031	0.013
NH4	0.714	−80.324	52.086
PO4	0.523	−17.784	15.728
NO2	0.516	0.311	0.259
pH_mean	0.453	−0.684	0.625
Slope moderate	0.445	−0.256	0.675
Slope steep	0.445	0.862	0.772
Zonecont	0.383	6.353	878.235
NO3	0.277	−0.023	0.041
Mg	0.250	0.003	0.015
Ca	0.241	0.000	0.005