Fig. 2From: Process parameters and changes in the microbial community patterns during the first 240 days of an agricultural energy crop digesterDevelopment of abiotic process parameters over the observation period. From top to bottom pH-values, concentration of volatile fatty acids (VFA), VFA/TIC-values, ammonia-N-values in left fermenter and right post digester. Dash-dotted lines mark feed changes. First line day 100, start of the addition of grass silage, second line day 160, start of the addition of ground wheatBack to article page