 Doumba's portfolio was altered on 21 January 2006, when he was appointed as Minister of the Forest Economy, Water, Fishing, and National Parks, again on 28 December 2007, when he was appointed as Minister of the Forest Economy, Water, and Fishing, and finally on 14 January 2009, when he was appointed as simply Minister of the Forest Economy.After more than seven years as Minister of the Forest Economy, he was instead appointed as Minister of Urban and Regional Planning ("Aménagement du territoire") and the Evaluation of Public Policy on 19 June 2009, following the death of President Bongo.He was then moved to the post of Minister of Energy, Hydraulic Resources, and New Energies on 22 July 2009.