Table 2.
Observed (Sobs) and estimated (Chao1 and ACE) bacterial species richness, and diversity indices (Inverse Simpson) calculated from the 16S rRNA gene-based amplicon sequencing data of the planktonic and biofilm bacterial communities (sequence numbers were subsampled to the read number of the sample having the lowest sequence count).
| Sampling sites | Community | SEQ. No. | Coverage | Chao | ACE | Sobs | Inverse Simpson |
|---|---|---|---|---|---|---|---|
| Upstream Budapest (DNW) | Planktonic | 3311 | 0.98 ± 0.00 | 283.17 ± 23.02 | 291.49 ± 26.59 | 208.95 ± 5.29 | 23.06 ± 0.58 |
| Downstream Budapest (DSW) | Planktonic | 3311 | 0.98 ± 0.00 | 285.94 ± 22.26 | 302.53 ± 30.34 | 207.00 ± 5.02 | 21.43 ± 0.49 |
| Soroksári-Danube (SW) | Planktonic | 3311 | 0.98 ± 0.00 | 292.25 ± 26.25 | 313.86 ± 40.76 | 212.78 ± 6.73 | 21.99 ± 0.68 |
| Nyéki- Danube (NW) | Planktonic | 3311 | 0.99 ± 0.00 | 187.54 ± 25.13 | 217.04 ± 39.80 | 129.49 ± 5.53 | 17.14 ± 0.43 |
| Riha Lake (RW) | Planktonic | 3311 | 0.99 ± 0.00 | 196.58 ± 21.40 | 206.26 ± 28.78 | 146.03 ± 5.37 | 14.24 ± 0.50 |
| Upstream Budapest (DNB) | Biofilm | 22689 | 1.00 ± 0.00 | 403.04 ± 13.28 | 396.03 ± 8.14 | 351.02 ± 3.46 | 13.16 ± 0.07 |
| Downstream Budapest (DSB) | Biofilm | 22689 | 1.00 ± 0.00 | 368.62 ± 11.83 | 364.04 ± 7.50 | 318.06 ± 2.90 | 15.04 ± 0.09 |
| Soroksári-Danube (SB) | Biofilm | 22689 | 1.00 ± 0.00 | 329.57 ± 5.17 | 329.69 ± 3.54 | 313.17 ± 1.81 | 16.07 ± 0.09 |
| Nyéki- Danube (NB) | Biofilm | 22689 | 1.00 ± 0.00 | 349.18 ± 11.33 | 348.63 ± 8.25 | 321.83 ± 4.08 | 13.33 ± 0.16 |
| Riha Lake (RB) | Biofilm | 22689 | 1.00 ± 0.00 | 362.84 ± 9.70 | 360.84 ± 6.68 | 339.83 ± 3.50 | 13.85 ± 0.16 |