Table 1.
Taxa characteristic of the habitats of Łyna river catchment sections.
| Taxa | Functional group | Feeding guilds | Site | Catchment zone | IndVal x ± SD | p | M–K test p | Trend |
|---|---|---|---|---|---|---|---|---|
| Rotifera | ||||||||
| Monommata maculata | RAP | Suctor | 1 | I | 6.3 (2.8 ± 1.2) | 0.0152 | ||
| Scaridium longicaudum | RAP | Suctor | 1 | I | 12.3 (2.6 ± 1.3) | 0.0002 | ||
| Anuraeopsis fissa | SMC | Filtration | 2 | II | 13.3 (6.5 ± 2.4) | 0.0196 | ||
| Asplanchna priodonta | RAP | Predator | 2 | II | 31.7 (5.9 ± 2.1) | 0.0002 | 0.045 | ↓ |
| Brachionus diversicornis | SMC | Filtration | 2 | II | 8.3 (4.0 ± 1.0) | 0.0492 | ||
| Keratella cochlearis | SMC | Filtration | 2 | II | 15.4 (9.3 ± 1.6) | 0.0042 | 0.002 | ↓ |
| Mytilina spp. | SMC | Filtration | 2 | II | 7.4 (3.2 ± 1.3) | 0.0116 | 0.005 | ↑ |
| Ploesoma spp. | RAP | Suctor | 2 | II | 12.5 (2.6 ± 1.4) | 0.0028 | ||
| Polyarthra longiremis | RAP | Suctor | 2 | II | 17.1 (7.9 ± 1.3) | 0.0002 | 0.000 | ↓ |
| Trichocerca pusilla | RAP | Suctor | 2 | II | 21.4 (5.3 ± 2.0) | 0.0002 | ||
| Trichocerca musculus | RAP | Suctor | 2 | II | 10.2 (2.9 ± 1.4) | 0.0002 | ||
| Conochilus unicornis | SMC | Filtration | 3 | II | 33.8 (8.1 ± 3.3) | 0.0002 | 0.002 | ↓ |
| Gastropus stylifer | RAP | Suctor | 3 | II | 26.4 (3.6 ± 1.6) | 0.0002 | ||
| Keratella tecta | SMC | Filtration | 3 | II | 35.6 (12.1 ± 3.6) | 0.0002 | 0.001 | ↑ |
| Polyarthra vulgaris | RAP | Filtration | 3 | II | 16.7 (3.1 ± 1.5) | 0.0002 | ||
| Pompholyx sulcata | SMC | Filtration | 3 | II | 17.1 (4.9 ± 1.8) | 0.0006 | ||
| Trichocerca capucina | RAP | Suctor | 3 | II | 28.6 (3.0 ± 1.4) | 0.0002 | ||
| Trichocerca cylindrica | RAP | Suctor | 3 | II | 14.9 (4.9 ± 2.3) | 0.0030 | 0.006 | ↑ |
| Trichocerca similis | RAP | Suctor | 3 | II | 26.9 (5.6 ± 2.2) | 0.0002 | ||
| Cephalodella spp. | RAP | Suctor | 10 | IV | 12.4 (5.4 ± 1.2) | 0.0002 | ||
| Trichotria spp. | SMC | Filtration | 10 | IV | 6.8 (3.8 ± 1.5) | 0.0474 | ||
| Ascomorpha spp. | RAP | Suctor | 11 | IV | 11.6 (7.9 ± 1.8) | 0.0378 | < 0.0001 | ↓ |
| Lecane spp. | SMC | Filtration | 14 | IV | 9.5 (6.0 ± 1.2) | 0.0138 | 0.001 | ↑ |
| Brachionus urceolaris | SMC | Filtration | 17 | V | 6.1 (2.8 ± 1.5) | 0.0304 | ||
| Crustacea | ||||||||
| Ceriodaphnia quadrangula | LMC | Filtration | 2 | II | 9.9 (3.5 ± 1.8) | 0.0080 | ||
| Daphnia cucullata | LMC | Filtration | 2 | II | 15.4 (3.7 ± 2.0) | 0.0004 | ||
| Cyclops strenuus | RAP | Raptorial | 2 | II | 10.1 (2.6 ± 1.2) | 0.0012 | ||
| Bosmina longirostris | LMC | Filtration | 3 | II | 21.5 (8.9 ± 3.1) | 0.0016 | 0.007 | ↓ |
| Diaphanosoma brachyurum | LMC | Filtration | 3 | II | 17.2 (2.6 ± 1.5) | 0.0004 | ||
| Eudiaptomus graciloides | STA | Filtration | 3 | II | 34.9 (3.0 ± 1.4) | 0.0002 | ||
| Thermocyclops crassus | RAP | Raptorial | 3 | II | 52 (3.7 ± 1.4) | 0.0002 | ||
| Copepodites | LMC | Filtration | 3 | II | 53.6 (5.2 ± 1.6) | 0.0002 | ||
| Nauplii | SMC | Filtration | 3 | II | 35.2 (8.8 ± 1.7) | 0.0002 | 0.004 | ↓ |
| Protozoa | ||||||||
| Ciliata | 1 | I | 8.3 (2.9 ± 1.6) | 0.0146 | ||||
| Difflugia spp. | 13 | IV | 9 (5.5 ± 1.4) | 0.0230 | ||||
| Centropyxis aculeata | 13 | IV | 7.7 (4.5 ± 1.3) | 0.0280 | ||||
| Galeripora discoides | 14 | IV | 37 (15.8 ± 3.0) | 0.0002 | 0.001 | ↑ | ||
Indicator Value (IndVal), mean ± SD), and the trend of population size variability with the increasing area of the Łyna River catchment (Mann–Kendall test, p < 0.05).