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Table 3
Mean and standard deviation (SD) of values of zooplankton density and biomass in water samples from sites 1 and 2 in the Kortówka River in 2013 and the significance of differences in parameter values between sites.
| Zooplankton | Site | Difference (P) between sites | |
|---|---|---|---|
| 1 | 2 | ||
| Total density | 175.2 (93.4) | 148.6 (77.5) | n.s. |
| Rotifera density | 158.9 (91.6) | 133.3 (73.5) | n.s. |
| Copepoda density | 16.3 (9.0) | 14.3 (11.7) | n.s. |
| Cladocera density | – | 1 (0.9) | – |
| Total biomass | 0.267 (0.143) | 0.231 (0.506) | n.s. |
| Rotifera biomass | 0.168 (0.123) | 0.142 (0.126) | n.s. |
| Copepoda biomass | 0.089 (0.051) | 0.079 (0.046) | n.s. |
| Cladocera biomass | – | 0.010 (0.021) | – |
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