Experimentally measured ethene production as a function of initial aqueous-phase 1,2-DCA concentration after eight-weeks incubation of D. alkenigignens IP3-3T(left) and D. lykanthroporepellens BL-DC-9T(right). Filled symbols indicate average of replicate bottles inoculated with bacterial strains. Open symbols indicate average of replicate uninoculated negative control bottles. Bars represent one standard deviation. Arrows denote concentration at and above which >1% of the starting 1,2-DCA remained at the end of the incubation period.