. 2012 Oct 2;7(10):e46282. doi: 10.1371/journal.pone.0046282

Table 2. Stable carbon isotope analysis of the incorporation of ¹³C-labeled bicarbonate by the epibiotic microbial community on S. crosnieri setae.

Incubation Time (hours)	Tracer and Additional Energy Source	δ¹³C (‰)^*	Average ¹³C/¹²C	% Enrichment
0	–	−41.3±0.2	0.01077±0.00002	–
48	¹³CO₂	778±34	0.0200±0.0004	74±3
	¹³CO₂ + thiosulfate	1851±68	0.0320±0.0008	176±7

δ ¹³C values were measured in triplicate and were expressed as the mean ± SD.

^**

The ¹³C enrichment E (%) was calculated using the following equation: E = (F_sample/F_control − 1) ×100 (%). F_sample and F_control represent the isotopic abundance of ¹³C atoms of the epibionts before and after ¹³C labeling [F = (¹³C/¹²C)/(1+¹³C/¹²C)].

Table 2. Stable carbon isotope analysis of the incorporation of 13C-labeled bicarbonate by the epibiotic microbial community on S. crosnieri setae.

Table 2. Stable carbon isotope analysis of the incorporation of ¹³C-labeled bicarbonate by the epibiotic microbial community on S. crosnieri setae.