Fig. 3: Development of structural biofilm parameters.

Substratum coverage SC, mean biofilm thickness \(\bar L_F\), intrinsic biofilm porosity Φintrinsic and textural entropy TE illustrated for eight out of 24 biofilms over the course of the experiment (six days). Red crosses (markers) indicate outliers in flow cell 19. Missing values are due to visualization artifacts and were excluded from further calculations.