Table 2.

UniFrac scores and P values when comparing bacterial and archaeal ammonia oxidizer communities in the three algal species O. volubilis, P. crispa, and L. rodriguezii

UniFrac test	Groups compared	Score	Pa
Unweighted	Bacterial L. rodriguezii-O. volubilis-P. crispa	0.54	*
	Archaeal L. rodriguezii-O. volubilis-P. crispa	0.74	***
Weighted	Bacterial P. crispa-L. rodriguezii	1.52	***
	Bacterial O. volubilis-P. crispa	0.83	NS
	Bacterial L. rodriguezii-O. volubilis	2.14	***
	Archaeal P. crispa-L. rodriguezii	1.72	***
	Archaeal O. volubilis-P. crispa	2.00	***
	Archaeal L. rodriguezii-O. volubilis	0.76	***

^aNS, not significant; *, P < 0.05; **, P < 0.01; ***, P < 0.001.