Table 3.

Results for PERMANOVAs applied to Bray–Curtis transformed microbiome data based on a 16S rRNA amplicons and b shotgun metagenomics.

Source of variation	df	SS	R2	p	pDispersion
a. 16S rRNA amplicons
Host	10	7.4976	0.49404	0.001	0.052
Residuals	26	7.6784	0.50596
Diet	2	1.3922	0.09174	0.007	0.243
Residuals	34	13.7838	0.90826
Migration	2	1.8344	0.12088	0.002	0.253
Residuals	34	13.3416	0.87912
Depth	4	3.2905	0.21683	0.001	0.001
Residuals	32	11.8855	0.78317
b. Metagenomics
Host	6	3.2255	0.90916	0.001	0.002
Residuals	11	0.3223	0.09084
Diet	2	1.3185	0.37164	0.001	0.101
Residuals	15	2.2292	0.62836
Migration	1	0.5324	0.15008	0.007	0.869
Residuals	16	3.0153	0.84992
Depth	3	1.6944	0.47760	0.001	0.001
Residuals	14	1.8533	0.52240

P values for permutational MANOVA and permutation tests for homogeneity of multivariate dispersions are shown. Significant tests (p ≤ 0.05) are indicated in bold.

df degrees of freedom, SS sum of squares, R²coefficient of determination (proportional explained variation), p p value.