Environmental

variables

Mokolo

Mopa

Min

Average

Max

Min

Average

Max

Temperature (˚C)

23

24.46 ± 1.11*

28

26

28.57 ± 1.68*

33

Transparency (cm)

38

65.93 ± 15.73

100

35

72.50 ± 20.55

100

Depth (cm)

140

151.43 ± 8.42

170

100

144.29 ± 16.62

170

pH (UC)

5.15

6.54 ± 0.75

8.63

4.96

6.32 ± 0.68

7.36

O₂ dissolved (%)

31

60.98 ± 11.79

88.6

27.8

61.7 ± 12.52

87.8

CO₂ dissolved (mg/L)

0.07

3.79 ± 3.28

15.84

0.07

2.63 ± 2.23

8.8

NO− 3 (mg/l)

0

1.58 ± 1.65

9

0

1.06 ± 1.19

5.6

NO− 2 (mg/l)

0

0.003 ± 0.004

0.017

0

0.02 ± 0.03

0.1

NH+ 4 (mg/l)

0.01

0.88 ± 0.61

2.49

0.11

1.21 ± 1.15

4.21

PO3− 4 (mg/l)

0

6.61 ± 5.60

24.20

0

4.44 ± 3.35

10.70

BOD₅ (mg/l)

5

31.61 ± 34.62

185

5

32.32 ± 46.25

185

Chlorophyll “a” (µg/L)

1.4

28.4 ± 29.52

147.1

6.1

39.96 ± 27.16

93.6

N/P ratio

0

1.22 ± 2.44

12.5

0

2.32 ± 4.88

18.73