TABLE 2.

Association between environmental distance and community turnover

Marker	Predictor	Litter		Soil
		Coefficients	p value	Coefficients	p value
18S	Intercept	94.615	1.000	77.103	1.000
	Geo.Dist	0.144	.003	0.084	.050
	pH	0.193	.002	0.143	.026
	Carbon	0.110	.096	0.286	.001
	Chemical	0.168	.015	0.109	.162
	Physical	0.115	.035	0.160	.017
COI	Intercept	18.726	1.000	−1.402	1.000
	Geo.Dist	0.114	.007	0.192	.000
	pH	0.175	.008	0.130	.030
	Carbon	0.267	.001	0.299	.000
	Chemical	0.177	.023	0.137	.069
	Physical	0.215	.002	0.246	.000
ITS	Intercept	157.504	1.000	110.212	1.000
	Geo.Dist	0.116	.015	0.094	.033
	pH	0.229	.006	0.180	.010
	Carbon	0.111	.223	0.362	.000
	Chemical	−0.115	.227	0.046	.589
	Physical	0.212	.006	0.005	.945

The multiple regressions were based on the geographical distance, Euclidean distance matrices of soil properties, and community Jaccard dissimilarity index values. Bold indicates significant results. Community dissimilarity is significantly associated with geographical distance (Geo.Dist) for Amazonian fungal communities in soil and litter. All community turnovers were significant using 10,000 permutations (p < .05) with the following R ²: 18S litter = .18 (F = 31.6) and soil = .18 (F = 30.1), COI litter = .26 (F = 50.2) and soil = .28 (F = 54.5), and ITS litter = 0.12 (F = 18.8) and soil = .18 (F = 30.1).