Table 2.

Statistical overview of results (i.e., variance and correlations) extracted from three axes of the Redundancy analysis (RDA) model.

Axis				Axis 1	Axis 2	Axis 3
Eigenvalues				3.01	0.941	0.411
% of variance explained				45.4	14.2	6.2
Cumulative % explained				45.4	59.6	65.8
Pearson Corr., Response-Pred.*				0.881	0.951	0.744
Kendall Corr., Response-Pred.				0.608	0.801	0.543
Variables	Correlation			Biplot Scores
	Axis 1	Axis 2	Axis 3	Axis 1	Axis 2	Axis 3
Latitude	0.047	−0.42	0.151	0.049	−0.243	0.058
Longitude	−0.095	0.15	−0.216	−0.099	0.087	−0.083
Altitude	0.228	0.137	−0.083	0.238	0.08	−0.032
Aspect degree	−0.163	−0.069	0.353	−0.17	−0.04	0.136
pH	0.32	0.18	−0.057	0.078	0.105	−0.022
Electrical conductivity	−0.097	−0.059	−0.305	−0.101	−0.034	−0.117
Phosphorus	−0.21	0.317	−0.033	−0.219	0.185	−0.013
Nitrogen	−0.146	−0.143	0.291	−0.152	−0.083	0.112
Potassium	0.437	−0.44	−0.091	0.455	−0.254	−0.035
Organic matter	0.068	0.17	0.031	0.071	0.099	0.012
Clay	−0.056	−0.21	0.041	−0.058	−0.122	0.016
Silt	−0.139	−0.17	−0.043	−0.145	−0.099	−0.016
Sand	−0.039	0.253	0.086	−0.04	0.147	0.033
Wilting point	−0.04	−0.27	0.002	−0.042	−0.159	0.001
Field capacity	−0.15	−0.24	0.265	−0.156	−0.141	0.102
Bulk density	0.11	0.216	−0.259	0.114	0.125	−0.1
Available water	0.068	−0.21	−0.168	0.07	−0.122	−0.064
Species richness	−0.036	−0.32	−0.249	−0.038	−0.186	−0.096
Shannon-Wiener diversity index	0.318	−0.22	0.035	0.331	−0.13	0.014
Evenness or equitability index	0.493	0.163	0.401	0.513	0.095	0.154
Simpson’s index	0.525	−0.017	0.255	0.547	−0.01	0.098