Table 2.
Summary of water chemistry parameters and biodiversity of each river basin
| River basin | Dande/Úcua | Bengo | Kwanza | Lucala | Cuije |
|---|---|---|---|---|---|
| Number of sites | 20 | 11 | 4 | 22 | 3 |
| Altitude (m) | 232 (12–762) | 17 (0–31) | 14 (4–21) | 220 (201–1111) | 1045 (1038–1051) |
| Temperature (°C) | 28.3 (25.4–32.8) | 30.4 (27.8–33.1) | 32.7 (30.9–33.6) | 31.5 (22.5–32.1) | 24.2 (22.1–27.2) |
| TDS (ppm) | 205 (42–736) | 398 (138–830) | 69 (59–80) | 119 (26–612) | 204 (156–276) |
| pH | 7.75 (6.96–8.79) | 7.71 (6.88–8.70) | 7.02 (6.54–7.82) | 9.26 (6.85–9.60) | 7.76 (7.07–8.31) |
| Conductivity (m/s) | 245 (59–795) | 562 (194–1171) | 96 (83–112) | 159 (65–860) | 288 (220–397) |
| Salinity (ppm) | 125 (33–389) | 276 (95–581) | 52 (46–58) | 84 (35–415) | 139 (106–190) |
| Average biodiversity (no. of genera) | 1.35 (0–4) | 3.27 (2–5) | 3.25 (3–4) | 1.5 (0–2) | 3.3 (1–5) |
Note: Data are given as mean (range)