Abstract
The paper presents the modification of the ichtyofauna structure from the Bistriṭa River basin under the influence of hydrotechnical works, through the quantitative and qualitative monitoring of the piscicultural fauna of four reservoirs built along this river (Pângăraţi, Bâtca Doamnei, Lilieci and Racova).
In determining the ecological significance index (W), we have established the structure of the fish populations from these reservoirs. The calculation of the index of biological integrity (IBI) of the fish communities has permitted emphasizing the anthropic effect on these aquatic ecosystems.
Cuvinte cheie
fish species list
integrity index
Bistrita river