Ecology, Environment and Conservation Paper

Vol.12, Issue 01, 2006; Page No.(87-92)

LIMNOLOGICAL STUD ES OF ATTIVERI AND BACHANKI RESER- VOIRS OF UTTAR KANNADA DISTRICT, KARNATAKA, INDIA

V.A.Kudari. R.D.Kanamadin and G.G.Kadadevaru

Abstract

Limnological studies of Attiveri and Bachanki reservoirs of were undertaken, a total of twenty-two of physico-chemical properties were investigated for a period of fourteen months from February 2003 - March 2004. Correlation between the physico-chemical parameters of both reservoirs was assessed statistically by using correlation matrix. There exists significant positive correlation between chlorides and fluoride (p<0.01), temperature and conductivity (p<0.01), conductivity and salinity (p0.001), conductivity and total dissolved solids (p<0.001), transparency and ammonia nitrogen (p<0.01), and transparency and pH (p<0.001). Significant negative correlation was observed between fluoride and nitrate (p<0.01), fluoride and total dissolved solids (p<0.01), pH and nitrate (p<0.05), and water temperature and ammonia-nitrogen (p<0.05). A total of 33 zooplankton species were recorded i.e., 17 species of Rotifers, 11 species of Cladocerans Hand 5 species Copepods. 32 species were recorded in Bachanki reservoir whereas 23 species in Attiveri reservoir. It is suggested that Attiveri reservoir has to be protected from anthropogenic activities to conserve avifauna of this bird sanctuary.

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