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Table 2
Variations in the vertical water parameters for biochemical oxygen demand (BOD), chlorophyll a (Chla), total phosphorus (TP), orthophosphate (Ortho), and ammonia in relation to sites and layers (epilimnion and hypolimnion).
| Sites | ||||||||
|---|---|---|---|---|---|---|---|---|
| Variables | Layers | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| BOD (mg L−1) | Bottom | 4.9 ± 1.2 | 3.7 ± 0.8 | 3.4 ± 2.9 | 6.6 ± 2.9 | 4.4 ± 3.2 | 5.2 ± 2.3 | 3.4 ± 2.5 |
| Surface | 4.9 ± 1.7 | 4.6 ± 3.0 | 4.1 ± 1.7 | 3.4 ± 2.5 | 4.2 ± 1.8 | 5.8 ± 3.9 | 3.5 ± 3.0 | |
| Chla (μg L−1) | Bottom | 2.9 ± 2.3 | 3.9 ± 2.9 | 4.2 ± 4.3 | 3.5 ± 4.3 | 3.5 ± 2.1 | 3.7 ± 1.9 | 5.8 ± 2.7 |
| Surface | 4.5 ± 2.5 | 3.9 ± 3.2 | 4.8 ± 3.5 | 4.3 ± 2.3 | 4.4 ± 3.4 | 4.6 ± 3.7 | 5.3 ± 2.1 | |
| TP (μg L−1) | Bottom | 29.8 ± 0.0 | 29.0 ± 0.0 | 29.6 ± 0.0 | 27.8 ± 0.0 | 32.4 ± 0.0 | 35.7 ± 0.0 | 28.3 ± 0.0 |
| Surface | 32.4 ± 0.0 | 27.1 ± 0.0 | 32.4 ± 0.0 | 26.7 ± 0.0 | 25.4 ± 0.1 | 27.6 ± 0.0 | 26.2 ± 0.0 | |
| Ortho (μg L−1) | Bottom | 27.5 ± 0.0 | 28.9 ± 0.0 | 27.4 ± 0.0 | 27.4 ± 0.0 | 32.9 ± 0.0 | 31.6 ± 0.0 | 29.4 ± 0.0 |
| Surface | 23.6 ± 0.0 | 25.7 ± 0.0 | 26.7 ± 0.0 | 25.9 ± 0.0 | 29.8 ± 0.0 | 26.9 ± 0.0 | 26.8 ± 0.0 | |
| Ammonia | Bottom | 38.2 ± 0.0 | 39.6 ± 0.0 | 36.9 ± 0.0 | 39.2 ± 0.0 | 39.6 ± 0.0 | 41.9 ± 0.0 | 41.8 ± 0.0 |
| (μg L−1) | Surface | 37.2 ± 0.0 | 38.4 ± 0.0 | 38.0 ± 0.0 | 37.4 ± 0.0 | 39.7 ± 0.0 | 37.4 ±.0 | 36.8 ± 0.0 |
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