Table 2 The mean concentrations (Mean ± SD) of nutrients values sampled along the cages (n = 4), at the intermediate site and the control site before and after stocking of fish in cages
From: Environmental impacts of cage culture in Lake Victoria: the case of Shirati Bay-Sota, Tanzania
Duration | Month | Location | TN | Nitrate nitrogen | Nitrite nitrogen | TP | SRP | Ammonia nitrogen | Chl a |
|---|---|---|---|---|---|---|---|---|---|
(µg/l) | |||||||||
Before stocking | February | AC | 482.31 ± 3.1 | 70.8 ± 9.6 |  | 89.8 ± 3.7 | 11.62 ± 0.9 | 168.3 ± 22.0 | 7.4 ± 2.3 |
Intermediate | 475.07 | 72.88 | Â | 86.88 | 11.09 | 176 | 12.8 | ||
Control | 736.6 | 19.3 | Â | 131.3 | 119.3 | 21.3 | 40.16 | ||
After stocking | March | AC | 693.2 ± 96.3 | 81.6 ± 10.9 |  | 94.4 ± 25.1 | 15.9 ± 17.7 | 140.5 ± 70.9 | 2 ± 9.9 |
Intermediate | 728.38 | 76.75 | Â | 76.24 | 5.3 | 112.25 | 3.64 | ||
August | AC | 1034.5 ± 282.0 | 137.2 ± 26.6 | 4.25 ± 1.5 | 106.8 ± 24.5 |  | 365 ± 126.2 | 1.902 ± 0.04 | |
Intermediate | 748.2 | 113 | 4 | 92 | Â | 328 | 1.94 | ||
| Â | Â | Control | 985.6 | 32.9 | 1.3 | 151.1 | 125.8 | 294.0 | 32.59 |