Parameters

Seasons

Winter

Spring

Summer

Autumn

Average

F

P

pH

7.75 ± 0.23

7.75 ± 0.10

8.02 ± 0.21

7.08 ± 0.22

7.65 ± 0.4

23.9

<0.001

Temperature (˚C)

17.33 ± 1.11

19.15 ± 0.31

22.05 ± 0.53

18.95 ± 0.52

19.37 ± 2

48.66

<0.001

Conductivity (µS/cm)

275.17 ± 2.93

288 ± 4.05

291 ± 2.61

238.33 ± 4.32

273 ± 24.2

278.45

<0.001

Secchi depth (cm)

50.67 ± 9.01

48.42 ± 8.04

54.5 ± 3.39

55.75 ± 5.38

52.33 ± 3.4

1.48

0.249

Chloride (mg/L)

21.06 ± 2.76

23.07 ± 1.60

25.56 ± 2.25

31.68 ± 5.21

25.35 ± 4.60

12.04

<0.001

Free CO2 (mg/L)

16.57 ± 1.71

16.68 ± 5.27

5.79 ± 1.01

18.47 ± 3.27

14.38 ± 5.8

18.95

<0.001

Total alkalinity (mg/L as CaCO3)

168.33 ± 6.06

170.42 ± 6.21

160 ± 8.94

161.48 ± 4.91

165.06 ± 5.1

3.47

0.354

Total hardness (mg/L as CaCO3)

124 ± 4.00

138.5 ± 4.64

131.17 ± 3.13

96.27 ± 3.85

122.48 ± 18.45

131.65

<0.001

DO (mg/L)

10.11 ± 0.37

4.96 ± 0.51

8.89 ± 0.87

5.27 ± 0.59

7.31 ± 2.6

106.1

<0.001

Nitrate (mg/L)

0.03 ± 0.009

0.05 ± 0.004

0.06 ± 0.008

0.04 ± 0.015

0.05 ± 0.01

6.05

0.004

Phosphate (mg/L)

0.05 ± 0.002

0.13 ± 0.06

0.12 ± 0.009

0.12 ± 0.072

0.10 ± 0.04

3.99

0.022

Gross productivity (gC/M3/day)

3.16 ± 0.75

2.44 ± 0.67

3.92 ± 0.18

3.13 ± 2.01

3.16 ± 0.6

6.5

0.003

Net productivity (gC/M3/day)

1.71 ± 0.38

1.55 ± 0.78

1.58 ± 0.17

2.01 ± 0.39

1.71 ± 0.21

1.12

0.364