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Table 2 Summary of water chemistry parameters and biodiversity of each river basin

From: Mapping freshwater snails in north-western Angola: distribution, identity and molecular diversity of medically important taxa

River basin

Dande/ƚcua

Bengo

Kwanza

Lucala

Cuije

Number of sites

20

11

4

22

3

Altitude (m)

232 (12ā€“762)

17 (0ā€“31)

14 (4ā€“21)

220 (201ā€“1111)

1045 (1038ā€“1051)

Temperature (Ā°C)

28.3 (25.4ā€“32.8)

30.4 (27.8ā€“33.1)

32.7 (30.9ā€“33.6)

31.5 (22.5ā€“32.1)

24.2 (22.1ā€“27.2)

TDS (ppm)

205 (42ā€“736)

398 (138ā€“830)

69 (59ā€“80)

119 (26ā€“612)

204 (156ā€“276)

pH

7.75 (6.96ā€“8.79)

7.71 (6.88ā€“8.70)

7.02 (6.54ā€“7.82)

9.26 (6.85ā€“9.60)

7.76 (7.07ā€“8.31)

Conductivity (m/s)

245 (59ā€“795)

562 (194ā€“1171)

96 (83ā€“112)

159 (65ā€“860)

288 (220ā€“397)

Salinity (ppm)

125 (33ā€“389)

276 (95ā€“581)

52 (46ā€“58)

84 (35ā€“415)

139 (106ā€“190)

Average biodiversity (no.Ā of genera)

1.35 (0ā€“4)

3.27 (2ā€“5)

3.25 (3ā€“4)

1.5 (0ā€“2)

3.3 (1ā€“5)

  1. Note: Data are given as mean (range)