Volume No. 3 Issue No.: 3 Page No.: 790-795 Jan-Mar 2009

 

ALGAL BIODIVERSITY AND RELATED PHYSIC0-CHEMICAL PARAMETERS IN SASTHAMCOTTAH LAKE, KERALA (INDIA)

 

Ruchira Chaudhary and Rachana S. Pillai*

Dept. of Zoology, Govt. M.V.M. Bhopal, M.P. (INDIA)

 

Received on : November 29, 2008

 

ABSTRACT

 

The inland waters which include mainly fresh water bodies have great relevance to mankind. Since they are utilized directly or indirectly for human needs. The lake under investigation in the present study Sasthamcottah Lake is situated in the Kollam district of Kerala state. It is a well established fact that life in water depends upon the physico-chemical factors in the water. In this investigation water samples were collected every month during June 2006 to May 2007. The physico-chemical parameters studied included D.O., B.O.D.,C.O.D., Nitrate, Phosphate, Hardness, Total Alkalinity, pH, Electrical Conductivity from 4 different stations.The phytoplankton diversity was studied in relation to some physico-chemical parameters. A total of 10 species of phytoplankton were identified belonging to, Chlorophyceae, Bacillariophyceae and Dynophyceae. Chlorophyceae includes Cosmarium, Pediastrum, Eudorina, Coelastrum, Desmidium, Micrasterias and Filamentous algae. Bacillariophyceae includes Naviculla and Cyclotella. Dynophyceae includes Dinoflagellata. Chlorophyceae contributed 71.33%, Bacillariophyceae contributed 24.04% and Dynophyceae contributed 4.63%.The maximum density was of group Chlorophyceae. These classes of phytoplankton showed considerable fluctuations.

 

Keywords : Chlorophyceae, Bacillariophyceae, Dynophyceae, Phytoplankton

 

 

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