Figure 1
Cumulative methane production (minus blank controls) for the microcosms fed with 12C- and 13C-labeled oleate over three repeated batch feeding periods. The number above each plot indicates the batch oleate feed round. The black dashed line shows the theoretical methane potential of the added oleate (25.5 ml CH4; based on 2.9 g COD/g oleate, 8 mm concentration and 35 °C temperature). The black solid line represents the predicted methane production based on non-linear model fitting with a modified Gompertz equation (Supplementary Table 1). Error bars represent the standard deviation of the biological replicates.
