Table 2
Students' t-test results of total nitrogen (TN), total dissolved nitrogen (TDN), ammonia (NH4 +), total phosphorus (TP), total dissolved phosphorus (TDP) and soluble reactive phosphorus (SRP), the relative growth rate (RGR) of submerged macrophytes, and percent biomass (%) and total biomass of submerged macrophytes between the fish-absent and fish-present treatments. Statistical significance where p < 0.05 is labelled in bold.
| Comparisons | Variables/Species | Statistical parameters | |
|---|---|---|---|
|
|
|||
| t | P | ||
| Nutrients | TN | 14.677 | <0.0001 |
| TDN | 15.670 | <0.0001 | |
| NH4 + | 11.459 | <0.0001 | |
| TP | 4.592 | 0.004 | |
| TDP | 1.546 | 0.173 | |
| SRP | 2.179 | 0.072 | |
| RGR of macrophytes | H. verticillata | 1.049 | 0.335 |
| V. denseserrulata | 2.404 | 0.053 | |
| C. demersum | 4.664 | 0.003 | |
| M. spicatum | 1.511 | 0.181 | |
| Percent biomass (%) of each macrophyte species | % H. verticillata | 3.102 | 0.021 |
| % V. denseserrulata | 3.807 | 0.009 | |
| % C. demersum | 0.319 | 0.760 | |
| % M. spicatum | 2.126 | 0.078 | |
| Total biomass of the plants | Total biomass | 2.854 | 0.029 |
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