FIGURE A1.

Summary of activity tests. Data are categorized based on the year when measurements were conducted. In the first year and beginning of second year of reactor operation, whole reactor experiments were performed, in which the reactor was set as a closed system and substrates were followed for several hours. In the end of the second year of reactor operation, bioreactor biomass was incubated into serum bottles with combinations of electron donors and acceptors as indicated in the figure and detailed in the methods section. The inset in yellow displays a zoom in on some incubations as specified in the legend. Oxygen measurements reflect headspace concentrations.