Table 1.

Divergence between adult vs. juvenile barn swallow fecal microbiota (FM).

		Adonis						Betadisper
Input data	Effect	Df	SS	MSS	F	R2	p	SS	MSS	F	p
OTUs: weighted UniFrac	Adults vs. young	1	0.331	0.331	11.603	0.067	0.001	0.012	0.012	5.204	0.024
	Residuals	161	4.596	0.029		0.933		0.359	0.002
OTUs: unweighted UniFrac	Adults vs. young	1	2.575	2.575	11.253	0.065	0.001	0.147	0.147	29.346	<0.001
	Residuals	161	36.835	0.229		0.935		0.804	0.005
OTUs: Bray–Curtis	Adults vs. young	1	4.015	4.015	10.250	0.060	0.001	0.030	0.030	7.346	0.007
	Residuals	161	63.065	0.392		0.940		0.654	0.004
OTUs: Jaccard	Adults vs. young	1	3.142	3.142	8.527	0.050	0.001	0.058	0.058	33.110	<0.001
	Residuals	161	59.331	0.369		0.950		0.282	0.002
KEGGs: Bray–Curtis	Adults vs. young	1	0.070	0.070	5.949	0.036	0.003	0.015	0.015	6.166	0.014
	Residuals	161	1.902	0.012		0.964		0.401	0.002

ANOVA tables for adonis and betadisper models testing differences in FM composition and inter-individual variation among adults and juveniles. Models were fitted for four ecological distance types (weighted and unweighted UniFrac, Bray–Curtis and Jaccard) for the OTU dataset. Shown are treatment and residual degrees of freedom (Df), sum of squares (SS), mean sum of squares (MSS), F-statistic values (F), probability values (p) and proportion of explained variance (R²).