Table 1. Mean and range of chemical, physical and biological parameters measured in Lake Võrtsjärv in years 2014 and 2018.
| Characteristic | 2014 | 2018 |
|---|---|---|
| Chl a, mg m-3 | 21.8 (5.2–32.1) | 14.3 (2.2–29.3) |
| Chl a 0.2, mg m-3 | 1.7 (0.6–3.6) | 7.6 (0.05–33.3) |
| Phytoplankton wet biomass g m-3 | 19.2 (2.8–41.8) | 22.5 (1.3–41.1) |
| Ciliates, individuals mL-1 | 92 (25–184) | 118 (12–280) |
| Metazooplankton, individuals L-1 | 1107 (58–3666) | 364 (16–953) |
| NH4-N mg L-1 | 0.08 (<0.01–0.12) | 0.06 (<0.01–0.12) |
| NO2-N mg L-1 | 0.01 (<0.003–0.022) | 0.12 (<0.003–0.012) |
| NO3-N mg L-1 | 0.36 (0.01–1.8) | 0.34 (0.02–1) |
| PO4-P mg L-1 | 0.01 (0.007–0.028) | 0.01 (0.01–0.024) |
| TP, mg L-1 | 0.04 (0.03–0.06) | 0.04 (0.03–0.07) |
| TN, mg L-1 | 1.19 (0.82–2.3) | 1.05 (0.6–1.5) |
| Secchi depth, m | 0.8 (0.5–1.8) | 0.8 (0.4–1.8) |
| pH | 8.4 (8.2–8.7) | 8.5 (7.3–8.2) |
| Temperature, °C | 9.2 (0.5–23) | 12.3 (0.1–24) |