The total production of biogas in these cases was in the range from 316.99711.74 dm3/g o.d.m. to 329.65725.85 dm3/g o.d.m. The rate of biogas production and methane content were at r¼45.65 cm3/d to r¼53.73 cm3/d. In the period of Cyanoprokaryota prevalence, a significantly higher con-tent of CH4 was additionally observed in biogas,