Open Access
Table 4
Basic limnologicaldata of littoral sampling points in the studied lakes (mean ± SD, n = 6).
| Parameters | Skomielno | CzarneSosn. | Tomaszne | Krzczeń |
|---|---|---|---|---|
| Depth (m) | 1.08 ± 0.11 | 0.82 ± 0.43 | 1.08 ± 0.32 | 1.47 ± 0.1 |
| Transparency (m) | Down to the bottoma | 0.40 − down to the bottomb | 0.72 ± 0.19 | 0.43 ± 0.20 |
| Water temperature (°C) | 14.9 ± 5.5 | 15.1 ± 4.9 | 15.0 ± 5.0 | 14.5 ± 4.6 |
| pH | 8.3 ± 0.1 | 7.8 ± 0.4 | 8.5 ± 0.3 | 8.2 ± 0.6 |
| Conductivity (μS cm−1) | 277 ± 30 | 317 ± 27 | 350 ± 6 | 279 ± 45 |
| Oxygen (mg L−1) | 9.6 ± 0.7 | 7.7 ± 0.6 | 11.5 ± 2.9 | 9.0 ± 3.1 |
| N–NH4 (mg L−1) | 0.113 ± 0.22 | 0.061 ± 0.022 | 0.085 ± 0.025 | 0.117 ± 0.025 |
| N–NO3 (mg L−1) | 0.120 ± 0.122 | 0.143 ± 0.069 | 0.163 ± 0.091 | 0.152 ± 0.067 |
| P–PO4 (mg L−1) | 0.039 ± 0.023 | 0.026 ± 0.011 | 0.013 ± 0.011 | 0.038 ± 0.023 |
| DIN/DIP ratioc | 27.5 ± 36.6 | 17.2 ± 6.5 | 59.4 ± 37.5 | 22.1 ± 1.1 |
| P tot. (mg L−1) | 0.060 ± 0.026 | 0.072 ± 0.22 | 0.085 ± 0.077 | 0.244 ± 0.016 |
| TOC (mg L−1) | 4.73 ± 0.26 | 18.13 ± 1.96 | 4.32 ± 0.37 | 5.73 ± 0.63 |
| TSS (mg L−1) | 3.00 ± 2.65 | 6.39 ± 1.89 | 9.9 ± 1.14 | 31.58 ± 23.00 |
| Phytoplankton chlorophyll-a (μg L−1) | 10.9 ± 3.1 | 17.8 ± 4.4 | 48.0 ± 23 | 143.1 ± 68 |
| TSISD | 46 | 70 | 70 | 73 |
| TSIPtot. | 65 | 68 | 67 | 83 |
| TSIChl-a | 54 | 57 | 69 | 80 |
| TSI SD + P tot. + Chl-a | 55 | 65 | 69 | 79 |
| Trophic status | Meso-eutrophic | Eutrophic | Eutrophic | Hypertrophic |
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