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. 2021 Jun 29;12:659079. doi: 10.3389/fmicb.2021.659079

FIGURE 3.

FIGURE 3

Redox gradient and carbon isotope composition of CH4 and dissolved inorganic carbon along soil profiles of three tropical peatlands (BVA, QUI, SJO). Redox potential (Eh) is based on the ratio of the CH4-CO2 redox couple and soil pH-corrected. VPDB, Vienna Pee Dee Belemnite. Each data point corresponds to one replicate soil core.