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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)