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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue Sep 2008, 29 (5)                                     Back

Interactions between marine facultative epiphyte Chlamydomonas sp

Studies on phytoplankton diversity in response to abiotic factors in Veeranam lake in the Cuddalore district of Tamil Nadu


R. Senthilkumar and K. Sivakumar*


Department of Botany, Directorate of Distance Education, Annamalai University, Annamalainagar - 608 002, India


(Received: September 01, 2006; Revised received: May 15, 2007; Accepted: June 05, 2007)


Abstract: The phytoplankton samples were collected from the Veeranam lake for a period of one year from March-2005 to February-2006. The physico-chemical parameters of water such as air-temperature, water temperature, pH, salinity, dissolved oxygen, electrical conductivity and total dissolved solids were observed and their ranges were: 30.1-36.5oC, 29.0-34.4oC, 7.9-8.4, 1.2-2.5 mgl-1, 7.6-9.2 mS and 2.5-5.2 mgl-1.? Totally 160 species of phytoplankton belonging to different taxonomic groups were identified. Among these 74 species to belong to Bacillariophyceae, 43 species to Chlorophyceae, 38 species to Cyanophyceae and 5 species to Euglenophyceae. The phytoplankton density was high (1705 cells l-1) during the summer season and low (760 cells l-1) during the winter season. Bacillariophyceae formed the dominant group. Species diversity index (H?), species richness (SR) and species evenness (J?) were calculated.?


Key words: ? Phytoplankton, Physico-chemical parameters, Veeranam lake

PDF of full length paper is available with author (*


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