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Table 1 Seasonal variation in mean ± standard deviation of water physico-chemical parameters from the four sampling sites

From: Seasonal dynamics of the genus: Planktoniella Schutt in the estuarine waters of Indian Sundarbans

Season and site

Temperature (°C)

pH

Salinity (ppt)

Turbidity (NTU)

TDS (mg/l)

Conductivity (mS/cm)

DO (mg/l)

Mar.–May

1

31.80 ± 1.56

8.50 ± 0.69

18.35 ± 3.61

75.00 ± 49.50

19.95 ± 3.32

32.10 ± 14.4

6.07 ± 1.37

2

31.25 ± 2.62

8.55 ± 0.32

14.30 ± 4.10

76.50 ± 30.40

17.65 ± 6.01

36.35 ± 11.7

6.52 ± 1.02

3

31.45 ± 1.91

8.75 ± 0.25

20.35 ± 1.77

53.00 ± 32.50

19.80 ± 3.68

20.35 ± 1.77

6.33 ± 1.04

4

32.25 ± 1.48

7.42 ± 1.63

20.40 ± 2.69

61.00 ± 29.70

18.75 ± 4.17

33.00 ± 13.01

6.80 ± 2.26

Jun.–Aug.

1

31.85 ± 0.91

7.71 ± 0.43

12.30 ± 1.56

395.0 ± 177.0

16.85 ± 2.76

26.00 ± 6.51

6.00 ± 1.13

2

32.05 ± 1.20

7.84 ± 0.28

16.25 ± 6.29

355.0 ± 106.1

18.50 ± 3.96

33.9 ± 13.15

5.9 ± 0.707

3

31.85 ± 1.48

7.79 ± 0.30

14.55 ± 5.16

380.0 ± 99.00

18.50 ± 3.82

30.90 ± 14.40

5.75 ± 0.77

4

32.05 ± 1.06

8.19 ± 0.43

13.95 ± 3.32

335.0 ± 134.4

18.00 ± 3.96

26.10 ± 7.64

6.15 ± 1.20

Sep.–Nov.

1

31.75 ± 1.63

8.44 ± 0.47

11.82 ± 2.95

108.5 ± 101.1

15.45 ± 5.73

26.10 ± 3.96

5.85 ± 0.63

2

30.35 ± 1.34

8.34 ± 0.12

12.30 ± 1.56

126.0 ± 48.10

15.60 ± 3.11

26.90 ± 2.40

6.05 ± 0.21

3

31.85 ± 0.49

8.45 ± 0.32

12.85 ± 1.91

104.4 ± 78.50

16.05 ± 3.46

23.95 ± 2.33

6.10 ± 0.42

4

30.35 ± 2.05

8.44 ± 0.45

13.25 ± 2.05

88.50 ± 30.40

16.45 ± 3.89

24.00 ± 2.97

6.50 ± 0.18

Dec.–Feb.

1

27.50 ± 3.54

8.26 ± 0.21

12.32 ± 3.66

25.00 ± 24.00

15.25 ± 5.44

27.15 ± 5.44

7.70 ± 3.25

2

27.00 ± 2.83

8.72 ± 0.41

14.50 ± 4.38

80.50 ± 16.30

17.25 ± 5.16

30.60 ± 7.64

8.70 ± 3.54

3

28.25 ± 5.59

8.89 ± 0.30

14.55 ± 4.31

28.60 ± 28.80

17.25 ± 5.16

30.80 ± 7.35

8.50 ± 3.25

4

24.35 ± 6.43

8.90 ± 0.19

14.70 ± 4.10

37.50 ± 41.80

17.05 ± 4.74

30.65 ± 6.58

8.05 ± 2.33

  1. Site 1: Gadkhali (Durgaduani khal); Site 2: Bally (Gomor khal); Site 3: Amlamethi (River Bidya); Site 4: Jharkhali (River Herobhanga)