Table 4.

Variance explained (%) of the determined microbial biomass and bacterial and fungal diversity indexes across the agricultural landscape

	Microbial biomass		Bacterial richness		Bacterial evenness		Fungal richness		Fungal evenness
	Explained variance (%)	Relation	Explained variance (%)	Relation	Explained variance (%)	Relation	Explained variance (%)	Relation	Explained variance (%)	Relation
Physicochemical
C/N	4.1%***	–
Clay					2.5%*	–
Hydromorphia			1.7%*	+					2.6%*	+
pH water	1.5%*	+	17.1%***	+	14%***	+
SOC	15.4%***	+
Soil available P									2.0%*	–
Soil bulk density			3%*	–	3.1%**	–			4.5%**	+
x coordinate			3.2%**	+					2.1%**	–
Farm management practices
Crop residues input
Legume presence in the rotation									1.9%*	–
Pasture frequency	1.9%*	+					9.5%***	+	18.5%***	+
Organic fertilization
Pesticides
Soil tillage			2.3%*	+	5.6%***	+

Note. Missing values indicate that the variable was not retained in the model. Significance level is indicated as follows: *p < 0.05. **p < 0.01. ***p < 0.001. ns = nonsignificant.