Fish fauna from ROSCI0103 Buzau meadow (Romania)

Abstract

In the autumn 2010 ichthyofauna was investigated in ROSCI0103 Buzau meadow Natura 2000 site (from Siriu dam to near Vișani locality, in main riverbed). The status of fish species of community interest (An. II / H.D.) inside of ichthyocenoses, as abundance, biomass and anthropogenic impact were assessed. In this sites it was recorded 4 species of Community Interest: or , but in comparison with Standard Sheet of Natura 2000 ROSCI0103 which contain also 4 species but missing, in addition is . Between abundance and biomass of fish species is different from submountain to plain area: and in submountain area to from hill area to in plain area were dominating species as abundance and biomass. A main anthropogenic pressure consists in the building of dams in investigated water bodies (like Siriu dam), which stop the fish movement at the normal water levels (every define time the dam is open disturbing the water transparency affecting fish populations), also the ballast exploitation from riverbed and pollution by locals and tourist increase negative impact on fish community.

Keywords

• fish species richness
• abundance
• biomass
• fish conservation
• Buzau river