Figures
Figure 1: Biofilm height maps (maximum intensity projections,
MIPs) of day 10 comparing biofilms of each condition. The calibration
bar resembles the biofilm height (\(L_{F}\)) in µm. The scale bar equals
1 mm.
Figure 2: Comparison of the structural biofilm parameters mean
biofilm thickness \({\overset{\overline{}}{L}}_{F}\), substratum
coverage SC, textural entropy TE, skewness\(R_{\text{SK}}\), kurtosis \(R_{\text{KU}}\), fractal dimensionFD, angular second moment ASM, inverse difference
moment IDM, average horizontal \(\text{AHRL}\ \)and average
vertical run length AVRL over the course of the experiments
(10 days). Inoculation took place on day 0. An overview and meaning of
the parameters is provided in Table 2. \(N\) = 10 replicates; E1/E3, ≙\(c\) = 2.5 mg/L Fe2+; E2/E4, ≙ \(c\) = 0.25 mg/L
Fe2+; opened data points ≙ \(u\) = 0.75 cm/s; closed
data points ≙ \(u\) = 3.75 cm/s.