Figure 1
From: A new charophyte habitat with a stabilized good ecological potential of mine water

Trophic Level Index (TLI) and its partial indices based on TP (TLITP), TN (TLITN), SDD (TLISDD) and Chl a (TLICh) (averages from the growth season); trophic classification: 0–1, 1–2, 2–3, 3–4, 4–5, 5–6, 6–7 for ultra-microtrophic, microtrophic, oligotrophic, mesotrophic, eutrophic, supertrophic and hypertrophic, respectively.