| Wet season | Dry season | F | P | |||
---|---|---|---|---|---|---|---|
Min–Max | Mean | Min–Max | Mean | ||||
Water temperature (°C) | WT ** | 14.10–34.00 | 28.57 ± 3.58 | 14.30–26.8 | 21.50 ± 2.67 | 126.27 | 0.000 |
pH | pH ** | 6.76–8.76 | 7.30 ± 0.33 | 2.71–9.13 | 7.72 ± 0.77 | 8.01 | 0.005 |
Dissolved oxygen (mg/L) | DO | 0.13–9.90 | 5.35 ± 2.25 | 1.54–9.41 | 5.84 ± 2.06 | 2.19 | 0.142 |
Conductivity (s/cm) | Cond | 27.50–1628.00 | 349.99 ± 295.36 | 27.00–6250.00 | 545.22 ± 1010.27 | 1.48 | 0.226 |
Turbidity (NTU) | Tur ** | 1.14–271.00 | 38.03 ± 51.30 | 0.56–81.90 | 9.62 ± 12.54 | 37.48 | 0.000 |
River width (m) | RW ** | 3.00–220.00 | 40.15 ± 46.26 | 0.60–101.00 | 21.01 ± 19.81 | 9.14 | 0.003 |
Water depth (m) | WD | 0.02–5.00 | 0.73 ± 1.06 | 0.05–3.50 | 0.47 ± 0.69 | 2.97 | 0.088 |
Velocity (m/S) | Vel | 0.01–0.81 | 0.24 ± 0.18 | 0.01–0.90 | 0.25 ± 0.20 | 0.17 | 0.681 |
Div_substrate | Div_substrate | 0.00–0.73 | 0.23 ± 0.26 | 0.00–0.73 | 0.22 ± 0.27 | 0.04 | 0.852 |
Percentage of boulder | %Boulder | 0.00–100.00 | 9.68 ± 23.73 | 0.00–100.00 | 9.92 ± 24.97 | 0.00 | 0.952 |
Percentage of cobble | %Cobble | 0.00–90.00 | 11.77 ± 25.16 | 0.00–90.00 | 10.08 ± 21.93 | 0.05 | 0.825 |
Percentage of pebble | %Pebble | 0.00–85.00 | 8.87 ± 17.16 | 0.00–90.00 | 9.52 ± 17.94 | 0.01 | 0.935 |
Percentage of gravel | %Gravel | 0.00–95.00 | 9.44 ± 18.36 | 0.00–95.00 | 8.26 ± 18.25 | 0.39 | 0.531 |
Percentage of sand and silt | %Sand and silt | 0.00–100.00 | 59.92 ± 44.56 | 0.00–100.00 | 62.18 ± 43.82 | 0.12 | 0.736 |
Permanganate index (mg/L) | PI | 0.90–12.30 | 3.04 ± 2.09 | 0.50–5.10 | 2.56 ± 1.14 | 1.85 | 0.176 |
Chemical oxygen demand (mg/L) | CODCr | 6.00–69.80 | 13.81 ± 14.32 | 5.00–25.00 | 10.58 ± 4.99 | 0.65 | 0.422 |
Biochemical oxygen demand over 5 days (mg/L) | BOD5 | 0.50–27.30 | 2.79 ± 4.75 | 0.50–5.90 | 2.13 ± 1.26 | 0.03 | 0.859 |
Ammonium nitrogen (mg/L) | NH4+-N * | 0.03–17.90 | 2.14 ± 3.93 | 0.03–4.10 | 0.79 ± 0.83 | 5.42 | 0.022 |
Total phosphorus (mg/L) | TP * | 0.00–1.72 | 0.27 ± 0.41 | 0.01–0.39 | 0.15 ± 0.11 | 4.05 | 0.046 |
Total nitrogen (mg/L) | TN | 0.13–18.32 | 4.99 ± 4.82 | 0.05–18.22 | 5.83 ± 5.04 | 0.87 | 0.353 |