Pollution Research Paper

Vol.31, Issue 2, 2012; Page No.(315-318)

PLANKTONIC DIVERSITY AND HYDROBIOLOGICAL CHARACTERISTICS IN PECHIPARAI RESERVOIR, KANYAKUMARI DISTRICT, TAMILNADU, INDIA

V. Vidhya and C. Radhakrishnan Nair

Abstract

The quality of water is very important for any other aquatic ecosystems because any change in water directly or indirectly affects the biotic environment. The physico-chemical aspects of the ambient water control the general trend towards the distribution, composition and succession of plankton. Freshwater ecosystem is key component in the food web and plays an important role in nutrient recycling. The plankton both as producers and consumers play an important role in the energy transfer in an ecosystem. In this investigation, water samples were collected from Pechiparai Reservoir (Freshwater) and different physical, chemical and biological (Phyto and Zooplankton) characteristics analysis were done during the period of March 2010 to August 2010. The European Engineer Mr. Minchin Alexander constructed Pechiparai Reservoir during the period of 1897-1906.The catchment area of the reservoir is 207.19 Km2. From this observation, Five divisions of different Phytoplankton (104 species) and Four different groups of Zooplankton (30 species) were identified. The Phytoplankton was dominated by Bacillariophyceae (65.16%) followed by Cyanophyceae (10.44%), Chlorophyceae (10.32%), Euglenophyceae (9.62%) and Dinophyceae (4.45%). Four groups of Zooplankton viz., Rotiferans were the most dominant forms (35.40%) followed by Crustaceans (30.21%), Protozoans (21.17%) and Cnidaria (13.21%) were recorded. The Phytoplankton were predominant members of this biotope.

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