Table 5 Isotope signature estimates for the potential dominant basal sources in the Lucky Strike vent field

Photosynthetic_derived OM

−24 to −22 ‰

4–6‰

Gebruk et al. [42]; Khripounoff et al. [43]

Methanotrophs (methane δ¹³C)

−13.7 to −12.7 ‰

Low or negative

Charlou et al. [44]

Thiotrophs using the rTCA cycle

−15 to −10 ‰

Low or negative

Hügler & Sievert [45], Sievert et al. [46]

Thiotrophs using the CBB cycle

−36 to −30 ‰

Low or negative

Hügler & Sievert [45], Sievert et al. [46], Trask & Van Dover [47]