Fig. 1.
Schematic illustration of microbial metabolisms in deep-sea hydrothermal fields. Carbon
source in green or blue: CO2, CH4, (CH2O)n; Electron donors in red:·H2, H2S, S0, NH4+,Fe2+; Electron acceptors in black:·O2, S0, SO42−, NO3−, Fe3+
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