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Fig. 3. Concentrations of O2 (
), CO2 (
), and CH4 (black circle) in the soil gas (panel A and G), concentrations of petroleum hydrocarbons in the range C10 to C40 (black circle) and organic matter () (B and H; Tuomi et al., 2004), the rate of Fe reduction (C and I), the abundance of 16S rRNA genes belonging to Geobacteracaea (
; C and I), the rate of methane production (D and J) the rate of sulfate (SO4) reduction (E and K), and the rate of denitrification (F and L), as a function of depth in the vertical soil profiles obtained from point G18 (panels A-F) and G17 (panels G-L) at the Trollberget site. The rates of Fe reduction, SO4 reduction, and denitrification in unamended and amended soil microcosms are presented with white circles () and black circles, respectively. The initial rates (Days 0–62) and potential rates (Days 145–350) of methane production in soil microcosms are presented with white circles and black circles, respectively. The gray color indicates perched ground water and ground water (A and G).
