Skip to main content
. 2017 Oct 31;8:2077. doi: 10.3389/fmicb.2017.02077

Table 2.

Regression analysis between the ratio of MG-II 16S rRNA genes to Archaeal 16S rRNA genes vs. the fractional abundance of GDGTs, ring index (RI2), and the ratio of GDGT-2 to GDGT-3.

[MG-II/Archaea] vs. CLa [MG-II/Archaea] vs. total-IPL [MG-II/Archaea] vs. phospho-IPL
R2 P-value R2 P-value R2 P-value
%GDGT-0 0.37 0.04 0.44 0.02 0.40 0.03
%GDGT-1 0.50 0.01 0.58 0.00 0.72 0.00
%GDGT-2 0.43 0.02 0.47 0.01 0.60 0.00
%GDGT-3 0.33 0.05 0.51 0.01 0.69 0.00
%GDGT-4 0.43 0.02 0.46 0.02 0.58 0.00
%Cren. 0.25 0.10 0.37 0.03 0.21 0.13
%Cren.iso 0.56 0.01 0.11 0.80 0.53 0.01
RI2 0.49 0.01 0.50 0.01 0.72 0.00
GDGT 2/3 0.13 0.25 0.30 0.07 0.11 0.29
a

[MG-II/Archaea], the 16S rRNA gene ratio of MG-II to archaeal. CL, core lipids; total-IPL, intact polar lipids derived upon acid hydrolysis; phospho-IPL, intact polar lipids derived upon base hydrolysis.