ASSESSMENT ON FISH COMMUNITIES’ STATE BY SEVERAL BIODIVERSITY INDICES IN THE RIVER CASIN (ROMANIA) IN 1998-2008

  • NADEJDE MARIUS
    University ”Vasile Alecsandri” of Bacau, Department of Mechanical Engineering, and Environmental Engineering
    nadejdemariusionel@yahoo.ro
  • BRAN PETRONELA
    University ”Vasile Alecsandri” of Bacau, Department of Biology, Ecology, and Environment Protection
    petronelabran@yahoo.com
  • URECHE DOREL
    University ”Vasile Alecsandri” of Bacau, Department of Biology, Ecology, and Environment Protection
    dureche@ub.ro
  • CAMELIA URECHE
    “Vasile Alecsandri” University of Bacau, Faculty of Science, Department of Biology, Ecology and Environmental Protection, 157 Marasesti Street, 600115 Bacau, Romania
    urechec@ub.ro
  • LAZAR IULIANA
    University ”Vasile Alecsandri” of Bacau, Department of Mechanical Engineering, and Environmental Engineering
    ilazar@ub.ro

Abstract

This study aims to estimate the state of fish communities in the basin of River Casin in 1998-2008 based on some indices of biodiversity (Alpha, Berger-Parker, Simpson). There were established some physic-chemical factors of the water and there were made some correlations between biodiversity indicators and some abiotic factors. It was observed that the value of biodiversity indices varies in time and depends on the sampling sites, suggesting a clear influence of the anthropic factors on the biodiversity within fish communities.

Cuvinte cheie

biodiversity fish indices fish communities statistic analyses River Casin