Table 2.

Top ten most abundant taxonomic groups during library preparation

Sample	% reads	Phylum	Class	Order	Family	Genus
Total DNA	11.35%	Proteobacteria	$$\mathit{\alpha }$$ -Proteobacteria	Rhodobacterales	Rhodobacteraceae	Rhodobaca
	6.84%	Proteobacteria	$$\mathit{\gamma }$$ -Proteobacteria	Alteromonadales	Chromatiaceae
	5.20%	Proteobacteria	$$\mathit{ϵ}$$ -Proteobacteria	Campylobacterales	Helicobacteraceae
	3.99%	Proteobacteria	$$\mathit{\gamma }$$ -Proteobacteria	Chromatiales	Ectothiorhodospiraceae	Thioalkalivibrio
	3.82%	Bacteroidetes	Bacteroidia	Bacteroidales	ML635J-40
	3.46%	Proteobacteria	$$\mathit{ϵ}$$ -Proteobacteria	Campylobacterales	Helicobacteraceae	Sulfurimonas
	3.01%	Proteobacteria	$$\mathit{\gamma }$$ -Proteobacteria	Oceanospirillales	Oceanospirillaceae	Marinomonas
	2.42%	Cyanobacteria	Chloroplast	Stramenopiles
	2.38%	Firmicutes	Clostridia	Clostridiales	Clostridiaceae	Tindallia_Anoxynatronum
	2.31%	Proteobacteria	$$\mathit{\gamma }$$ -Proteobacteria	Alteromonadales	Chromatiaceae	Other
	44.77%
Intact cells	14.71%	Firmicutes	Clostridia	Clostridiales	Clostridiaceae	Proteiniclasticum
	11.65%	Proteobacteria	$$\mathit{\beta }$$ -Proteobacteria	Rhodocyclales	Rhodocyclaceae	Azoarcus
	10.63%	Firmicutes	Clostridia	Clostridiales	Acidaminobacteraceae	Fusibacter
	7.54%	GN02	BD1-5
	4.14%	Firmicutes	Clostridia	Clostridiales	Clostridiaceae	Tindallia_Anoxynatronum
	4.01%	Actinobacteria	OPB41
	2.77%	Firmicutes	Clostridia	Clostridiales	Clostridiaceae	Alkaliphilus
	2.45%	Bacteroidetes	Bacteroidia	Bacteroidales	ML635J-40
	2.38%	Cyanobacteria	Synechococcophycideae	Synechococcales	Synechococcaceae	Paulinella
	2.31%	Proteobacteria	$$\mathit{\alpha }$$ -Proteobacteria	Rhodobacterales	Rhodobacteraceae	Rhodobaca
	62.59%
MDA DNA	46.19%	Firmicutes	Clostridia	Clostridiales	Acidaminobacteraceae	Fusibacter
	12.93%	GN02	BD1-5
	9.16%	Firmicutes	Clostridia	Clostridiales	Clostridiaceae	Proteiniclasticum
	5.62%	Firmicutes	Clostridia	Clostridiales	Clostridiaceae	Tindallia_Anoxynatronum
	5.29%	Firmicutes	Clostridia	Clostridiales	Clostridiaceae	Alkaliphilus
	3.29%	Firmicutes	Clostridia	Clostridiales	Acidaminobacteraceae	WH1-8
	2.52%	Firmicutes	Clostridia	Clostridiales
	2.26%	Firmicutes	Clostridia	Clostridiales	Clostridiaceae
	1.60%	Firmicutes	Clostridia	Clostridiales	Acidaminobacteraceae
	0.73%	Firmicutes
	89.59%

Phylogenetic affiliation of the top ten most abundant taxonomic groups identified in the total DNA, DNA from intact cells, and MDA DNA preparations.