Fig. 1From: The majority of microorganisms in gas hydrate-bearing subseafloor sediments ferment macromoleculesSediment geochemistry of samples cored in the hydrate zone. Depth profiles of a methane and sulfate, b DIC contents and δ13C values of DIC, and c TOC contents. Dashed lines mark the predicted sulfate-methane interface predicted based on linear sulfate gradients. Samples used for metagenomic and metatranscriptomic analyses are marked with red asterisksBack to article page