Table 2.

The results of the verification of the explanatory variables using the Monte Carlo permutation test (499 permutations under reduced model) in the forward selection procedure of RDA (CANOCO 4.5); significant variables are in bold.

Marginal Effects			Conditional Effects
Variable	Var.N	Lambda1	Variable	Var.N	LambdaA	P	F
FA	4	0.10	FA	4	0.10	0.002	8.51
C:N	3	0.10	MDF	10	0.06	0.002	4.94
DP	7	0.08	DP	7	0.05	0.008	5.53
TO	6	0.07	BOH	13	0.04	0.020	3.60
MDF	10	0.06	TO	6	0.02	0.076	2.45
BOH	13	0.05	MOH	8	0.01	0.264	1.22
Ca2+	2	0.03	CP	12	0.02	0.192	1.48
CP	12	0.02	TOH	11	0	0.440	0.83
BO	5	0.02	C/N	3	0.01	0.398	1.00
TOH	11	0.01	BO	5	0.02	0.144	1.82
MOH	8	0.01	Ca2+	2	0.02	0.158	1.65
pHH20	1	0.01	pHH20	1	0	0.962	0.17
AO	9	0