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Table 2
Habitat parameters recorded in river Ganga during the study period.
| Parameters | Stretch# | |||
|---|---|---|---|---|
| Middle stretch (Patna) | Anterior lower stretch (Farakka) | Posterior lower stretch (Triveni) | Overall | |
| Water temperature (°C) | 20.1–32.2 | 18.3–31.5 | 21.1–35.2 | 18.3–35.2 |
| (28.71 ± 0.32) | (27.44 ± 0.42) | (28.53 ± 0.6) | (28.29 ± 0.24) | |
| Dissolved oxygen (ppm) | 3–10.9 | 5.8–9.8 | 2.8–6.8 | 2.8–10.9 |
| (6.18 ± 0.15) | (7.05 ± 0.11) | (4.93 ± 0.18) | (6.22 ± 0.1) | |
| Free carbon dioxide (ppm) | 0.9–2.6 | 0–9.5 | 0.5–7.7 | 0–9.5 |
| (1.39 ± 0.04) | (5.89 ± 0.34) | (4.72 ± 0.31) | (3.36 ± 0.16) | |
| pH (units) | 8.1–8.7 | 8.1–8.8 | 7.8–8.2 | 7.8–8.8 |
| (8.4 ± 0.01) | (8.46 ± 0.02) | (8.04 ± 0.02) | (8.35 ± 0.01) | |
| Total Dissolved Solids (ppm) | 155–338 | 140–260.2 | 152–258 | 140–338 |
| (262.56 ± 3.60) | (191.62 ± 4.13) | (219.39 ± 4.81) | (233.12 ± 2.91) | |
| Conductivity (umhos) | 198–476 | 190–366.6 | 206–371 | 190–476 |
| (360.28 ± 5.97) | (270.78 ± 5.76) | (293.77 ± 7.37) | (320.98 ± 4.34) | |
| Alkalinity (ppm) | 90–171 | 70–142 | 74–109 | 70–171 |
| (128.26 ± 1.99) | (103.7±2.2) | (93.06 ± 1.25) | (114.44 ± 1.46) | |
| Salinity (ppm) | 107–231 | 96.5–174 | 96–199 | 96–231 |
| (177.83 ± 2.26) | (130.25 ± 2.63) | (147.85±4.46) | (157.90 ± 1.97) | |
| Nitrate (ppm) | 0.06–0.92 | 0.16–0.79 | 0.78–1.09 | 0.06–1.09 |
| (0.3 ± 0.02) | (0.4 ± 0.02) | (0.97 ± 0.01) | (0.45 ± 0.02) | |
| Phosphate (ppm) | 0.02–0.06 | 0.01–0.12 | 0.08–0.12 | 0.01–0.12 |
| (0.03 ± 0.01) | (0.05 ± 0.01) | (0.1 ± 0.01) | (0.05 ± 0.01) | |
| Rainfall (mm) | 0–368.81 | 0–332 | 0–928 | 0–928 |
| (42.22 ± 7.32) | (221.58 ± 28.2) | (256.46 ± 39.55) | (135.46 ± 12.77) | |
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