Figure 1. Hydrological characteristics of the investigation target (a : flow rate, b : velocity).
Figure 2. Temporal changes of water quality parameters (a : BOD, b : TOC, c : T-N, d : T-P, e : F-).
Figure 3. Temporal changes of ash-free dry weight(AFDW, a) and chlorophyll a(Chl-a, b) biomass for attached microbial community at the P1. In each graph, CB is concrete brick, RB is clay brick, BB is basalt brick and RCB is red clay brick.
Figure 4. Temporal changes of ash-free dry weight(AFDW, a) and chlorophyll a(Chl-a, b) biomass for attached microbial community at the P2. In each graph, CB is concrete brick, RB is clay brick, BB is basalt brick and RCB is red clay brick.
Figure 5. Temporal changes of fluoride uptake by the attached microbial community at the P1 and P2. In each graph, CB is concrete brick, RB is clay brick, BB is basalt brick and RCB is red clay brick.
Table 1. Four types of artificial bricks for growth of attached microorganisms.
Table 2. Analysis equipment and methods for the experiment.
Table 3. Basic properties of the target stream.
Table 4. Pearson correlation coefficients between velocity, flow rate, BOD, TOC, T-N, T-P, ash-free dry weight(AFDW) and chlorophyll a(Chl-a) at the P1.
Table 5. Pearson correlation coefficients between velocity, flow rate, BOD, TOC, T-N, T-P, ash-free dry weight(AFDW) and chlorophyll a(Chl-a) at the P2.
Table 6. Pearson correlation coefficients between ash-free dry weight(AFDW), chlorophyll a(Chl-a) and fluoride in the body of the attached microbial community. The analysis was conducted with whole data obtained from the P1 and P2.
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