| Variable |
Treatment 1 |
Treatment 2 |
Treatment 3 |
Treatment 4 |
| Temperature (°C) |
25.92 ± 2.32 |
25.86 ± 2.67 |
25.91 ± 2.33 |
25.93 ± 2.33 |
| Salinity (g l-1) |
12.5 ± 2.78 |
11.71 ± 2.4 |
12.33 ± 2.52 |
12.49 ± 2.53 |
| Transparency (cm) |
53.75 ± 7.75 |
51.2 ± 8.04 |
45.1 ± 4.78 |
43.02 ± 8.92 |
| pH |
7.94 ± 0.10 |
7.95 ± 0.10 |
7.93 ± 0.10 |
7.96 ± 0.11 |
| Dissolved Oxygen (mg l-1) |
3.58 ± 0.56 |
3.55 ± 0.64 |
3.70 ± 0.63 |
3.69 ± 0.63 |
| Nitrate-N (mg l-1) |
0.73 ± 0.2 |
0.45 ± 0.07 |
0.44 ± 0.06a |
0.58 ± 0.09 |
| Ammonium-N (mg l-1) |
0.18 ± 0.03 |
0.14 ± 0.02 |
0.08 ± 0.01b |
0.12 ± 0.06 |
| Ortho-phosphate (mg l-1) |
0.11 ± 0.02 |
0.07 ± 0.01 |
0.04 ± 0.01b |
0.06 ± 0.01a |
| Total Alkalinity (mg l-1) |
113.0 ± 20.7 |
114.2 ± 16.3 |
122.2 ± 20.3 |
115.0 ± 17.4 |
a, b, c in the same row with different superscripts are significantly different. p values:
a<0.05; b<0.01; c<0.001. Values in each row with no superscript are non-significant.
Sources:
*Fast and Lester, 1992 [37]; **Abesamis, 1989 [38]; ***Tsai, 1989 [39]; NA= not
available |
