Studies on abiotic parameters of a tropical fresh water lake, Thiruvananthapuram district, Kerala
Hydrochemical studies were performed by collecting surface and bottom water sampled from 10 stations for a period of one year from February 1999 to January 2000 in a fresh water lake, Vellayani lake, in Thiruvanathapuram district, the capital city of Kerala. Marked spatial and temporal variations were noticed in majority of abiotic parameters.