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. 2017 Jul 21;8:1378. doi: 10.3389/fmicb.2017.01378

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Copyright © 2017 Li, Cui, Yang, Cui, Wei, Wu, Wang and Zhou.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Total organic carbon (TOC) and stable carbon isotopic ratio of subsamples collected from different spatial positions of an inactive sulfide chimney and an active sulfate chimney. For comparison with TOC contents and δ¹³C_TOC values, data of inactive and active chimneys from Manus back-arc basin (Reeves et al., 2014), Loki’s Castle of the Arctic Mid-Ocean Ridge (Joao and Menorah) (Jaeschke et al., 2012) and the Southern Mariana Trough (SMT) (Kato et al., 2010) are also plotted together (the vertical lines indicating the ranges of δ¹³C_TOC values and triangles representing the mean values).