Table 4.

Compositions of bacterial families in sampling pits of each Atacama site, displaying the named families that were more than 2% abundance (percentages in italics) in at least one pit sample

Phylum	Family (%)	M1	M2	M3	T01	T02	T41	T42	T43	T51	T52	T53	T61	T62	T63
Actinobacteria	Geodermatophilaceae	0.6	2.1	2.0	0.2	0.1	5.6	6.5	5.6	2.4	1.0	1.4	2.4	2.6	2.2
	Nocardioidaceae	0.5	0.1	0.1	1.0	0.5	2.1	2.0	1.8	0.8	1.2	0.2	1.1	1.5	1.9
	Pseudonocardiaceae	0.2	0.5	0.0	0.6	0.5	2.5	1.9	3.2	2.0	1.8	0.2	10.2	4.3	1.8
	Euzebyaceae	1.6	1.3	1.1	1.1	0.9	4.7	3.4	3.9	1.1	1.4	3.5	1.5	3.9	3.0
	Nitriliruptoraceae	2.0	3.8	0.0	3.5	10.9	0.7	0.6	0.3	0.4	0.5	4.3	0.6	1.3	0.2
	Rubrobacteriaceae	5.3	9.0	12.3	8.1	9.2	9.6	4.6	8.9	10.8	5.2	4.7	9.1	11.8	8.0
	Solirubrobacteraceae	1.7	1.7	0.9	3.8	3.7	7.5	11.8	10.9	3.1	2.5	3.2	3.4	4.4	2.4
Bacteroidetes	Hymenobacteraceae	0.0	0.0	0.0	0.0	0.0	3.0	3.7	2.9	0.7	0.2	0.6	0.8	0.3	0.3
Chloroflexi	AKIW781	3.7	6.2	2.6	3.5	1.7	9.5	13.8	10.9	3.4	3.5	1.6	5.4	5.3	2.0
	Kallotenuaceae	0.0	0.0	0.0	0.0	0.0	5.6	0.8	1.8	0.0	0.0	0.0	0.2	0.2	0.1
	Thermobaculaceae	2.1	2.3	2.3	1.1	1.4	3.1	2.4	4.5	0.5	0.3	0.3	0.1	0.3	0.0
	JG30-KF-CM45	0.6	0.6	0.8	1.7	1.2	7.6	6.9	8.3	0.9	1.2	1.7	1.6	2.9	2.0
Deinococcus-Thermus	Trueperaceae	0.3	0.0	0.0	0.0	0.0	1.2	0.9	0.9	0.2	0.1	2.2	0.0	1.0	0.1
Firmicutes	Bacillaceae	0.0	0.0	0.4	0.0	0.0	0.2	0.2	0.2	6.8	5.3	30.8	4.4	8.6	4.5
	Paenibacillaceae	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	1.6	2.1	3.3	0.8	1.5	1.0
	Sporolactobacillaceae	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.1	10.9	0.4	0.0	0.0	0.0
Gemmatimonadetes	Longimicrobiaceae	0.6	0.3	1.6	0.5	0.2	5.0	4.2	3.8	0.4	0.7	2.9	0.4	1.2	1.1
Planctomycetes	WD2101	0.4	0.0	0.0	3.1	1.0	0.7	0.3	0.5	2.3	2.7	1.1	1.7	1.9	2.9
Proteobacteria	Sphingomonadaceae	0.6	0.5	0.2	1.5	0.8	2.5	3.8	3.3	3.5	3.0	2.0	2.1	2.5	1.3
	Burkholderiaceae	9.6	5.5	9.6	1.0	1.6	2.0	1.7	4.2	0.6	0.7	1.2	0.5	0.7	0.7
	Nitrosococcaceae	0.0	0.0	0.0	7.0	1.8	0.0	0.0	0.0	1.7	0.6	0.1	0.4	0.2	1.1
Verrucomicrobia	Chthoniobacteraceae	0.0	0.0	0.0	0.4	0.2	0.0	0.0	0.0	2.5	2.5	0.3	3.0	1.9	3.9