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. 2003 Jan;69(1):74–83. doi: 10.1128/AEM.69.1.74-83.2003

FIG. 1.

FIG. 1.

Effects of supplemental H2 on the production of CH4 (A) and volatile fatty acids (B) in bog peat microcosms. Solid symbols indicate microcosms amended with H2; open symbols indicate controls (unamended); •, ○, H2; ▪, □, CH4; ▴, ▵, acetate; ▾, ▿, propionate; ⧫, ◊, butyrate. A detailed view of the production of CH4 during the first 2 days is shown in the inset.

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