Fish indicators used in the CZ-FBI index. Gear = extent of source data (i.e., gear and depth strata); ρTP = correlation coefficient with total phosphorus; poor, moderate and good class (with standardize value of the indicator in parentheses) = value ranges for each category of ecological class; WFD criteria = criterion type used for the assessment of ecological potential. NA: ρTP was not calculated because of only two values in the dataset; gear: benthic (BG) or pelagic (PG) gillnets; all = data from all strata. All indicators except the last one are based on fish older than 0+.
|1. Total fish biomass in dam part [kg · 1000 m‑2]||PG
|2. Total fish biomass in tributary part [kg · 1000 m‑2]||PG
|3. Total fish abundance [ind · 1000 m‑2]||BG all||0.59||>600||300–600||<300||Abundance|
|4. Relative biomass of common bream[%]||BG all||0.55||>10||5–10||<5||Community composition|
|5. Relative abundance of ruffe [%]||BG all||0.53||>20||10–20||<10||Community composition|
|6. Relative biomass of European perch [%]||PG all||−0.57||<10||10–20||>20||Community composition|
|7. Relative biomass of rudd [%]||BG and PG all||−0.62||<1||1–5||>5||Community composition|
|8a. Relative biomass of Salmonidae [%] < 700 m · a s l.||BG and PG all||−0.12||<1||1–2||>2||Community composition|
|8b. Relative biomass of Salmonidae ≥ 700 m a s l.||BG and PG all||NA||<2||2–5||>5||Community composition|
|9. Presence of 0+ fish of 6 species (common bream, roach, bleak, ruffe, European perch, pikeperch)||BG and PG all||0.59||<2||2–3||>3||Age structure|
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