S/N | Parameter | Unit | WATER LEVEL | ANOVA | ||||
Surface (n = 30) Mean ± S.E. | Mid-depth (n = 20) Mean ± S.E. | Bottom (n = 26) Mean ± S.E. | ||||||
F | P | |||||||
1 | Water-Temperature | ˚C | 29.7 ± 0.3 | 27.5 ± 0.3 | 27.5 ± 0.3 | 18.640 | 2.88 × 10−7*** | |
2 | Apparent-Colour | Pt-Co | 420.3 ± 59.4 | 406.9 ± 34.4 | 749.6 ± 85.2 | 8.494 | 0.0005*** | |
3 | True-Colour | Pt-Co | 122.3 ± 11.8 | 166.0 ± 17.8 | 210.2 ± 25.2 | 6.011 | 0.004** | |
4 | Turbidity | NTU | 31.1 ± 5.9 | 25.9 ± 2.8 | 62.9 ± 7.7 | 10.230 | 0.0001*** | |
5 | Total Suspended Solids (TSS) | mgL−1 | 135.0 ± 22.7 | 103.5 ± 9.7 | 205.4 ± 22.6 | 5.810 | 0.005** | |
6 | Total Solids (TS) | mgL−1 | 194.3 ± 23.1 | 156.5 ± 10.6 | 261.2 ± 22.6 | 5.759 | 0.005** | |
7 | pH | 0 - 14 | 6.64 ± 0.05 | 6.44 ± 0.04 | 6.27 ± 0.04 | 18.26 | 3.71 × 10−7*** | |
8 | Conductivity | µScm−1 | 83.90 ± 3.73 | 79.30 ± 3.60 | 82.27 ± 4.02 | 0.338 | 0.715 | |
9 | Total Dissolved Solids (TDS) | mgL−1 | 55.33 ± 2.17 | 52.50 ± 2.39 | 55.00 ± 2.88 | 0.336 | 0.716 | |
10 | Total-Alkalinity | mgCaCO3L−1 | 21.50 ± 0.88 | 23.00 ± 0.51 | 21.90 ± 0.87 | 0.840 | 0.436 | |
11 | Total-Hardness | mgCaCO3L−1 | 11.29 ± 0.90 | 11.49 ± 0.77 | 11.76 ± 0.96 | 0.074 | 0.928 | |
12 | Total-Acidity | mgCaCO3L−1 | 10.87 ± 0.75 | 12.20 ± 1.17 | 16.69 ± 1.17 | 9.612 | 0.0002*** | |
13 | Calcium ion (Ca2+) | mgL−1 | 3.85 ± 0.28 | 3.95 ± 0.27 | 4.02 ± 0.32 | 0.088 | 0.916 | |
15 | Magnesium ion (Mg2+) | mgL−1 | 0.40 ± 0.06 | 0.39 ± 0.07 | 0.40 ± 0.08 | 0.008 | 0.992 | |
16 | Sodium ion (Na+) | mgL−1 | 6.44 ± 0.19 | 6.06 ± 0.17 | 6.16 ± 0.16 | 1.269 | 0.287 | |
17 | Potassium ion (K+) | mgL−1 | 2.50 ± 0.19 | 2.42 ± 0.21 | 2.45 ± 0.20 | 0.036 | 0.964 | |
18 | Bicarbonate ion ( ) | mgL−1 | 25.80 ± 1.10 | 27.60 ± 0.60 | 26.20 ± 1.00 | 0.840 | 0.436 | |
19 | Chloride ion (Cl−1) | mgL−1 | 4.20 ± 0.23 | 4.22 ± 0.20 | 4.49 ± 0.22 | 0.552 | 0.578 | |
20 | Sulphate ion ( ) | mgL−1 | 4.49 ± 0.30 | 4.98 ± 0.31 | 4.71 ± 0.22 | 0.713 | 0.493 | |
21 | Dissolved Oxygen (DO) | mgL−1 | 5.61±0.24 | 3.52 ± 0.25 | 2.35 ± 0.23 | 50.650 | 1.6 × 10−14*** | |
22 | Dissolved Oxygen Saturation | % | 73.74 ± 3.13 | 44.55 ± 3.10 | 29.69 ± 2.91 | 58.190 | 7.7 × 10−16*** | |
23 | Biochemical Oxygen Demand (BOD5) | mgL−1 | 5.71 ± 0.55 | 2.81 ± 0.23 | 2.98 ± 0.61 | 9.869 | 0.0002*** | |
24 | Organic-Matter (OM) | mgL−1 | 7.38 ± 0.64 | 6.90 ± 0.74 | 8.77 ± 0.65 | 2.029 | 0.139 | |
25 | Nitrate ion ( ) | mgL−1 | 1.16 ± 0.14 | 0.91 ± 0.05 | 1.39 ± 0.16 | 2.813 | 0.067 | |
26 | Phosphate ( ) | mgL−1 | 0.23 ± 0.01 | 0.20 ± 0.02 | 0.23 ± 0.02 | 0.433 | 0.651 |