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Paper Details

Seasonal variation of some Caulerpa species (Chlorophyceae) in Tirunelveli region, the Southern coast of Tamil Nadu

John Peter Paul, J*. and Patric Raja, D.

Journal Title:Journal of Chemical, Biological and physical sciences

A study on the distribution of seaweed resources in Tirunelveli region was carried out for a period of four years from January 2007 to December 2010 by making monthly collection of some Caulerpa species from intertidal and subtidal regions at four stations along the south east coast of Tamil Nadu namely Kootapuzhi, Perumanal, Idinthakarai and Koothankuzhi. The seaweed species were enumerated at random using a quadrate (0.5m2). A total of eight species of Caulerpa were collected in the study area such as Caulerpa crassifolia, Caulerpa latevirens, Caulerpa mexicana, Caulerpa parvula, Caulerpa peltata, Caulerpa racemosa, Caulerpa scalpelliformis and Caulerpa sertularioides. The frequency and density were calculated and all the Caulerpa species showed a similar pattern of seasonal variation. Among the seaweeds collected the highest frequency (67.50%) and density (6.07) were observed in Caulerpa scalpelliformis during summer season and the lowest frequency (13.75%) and density (0.61) were recorded in Caulerpa sertularioides during post-monsoon season. From the present study it was concluded that all the Caulerpa species (Chlorophyceae) exhibited the maximum frequency and density during the summer season followed by the declined trend was observed in the successive seasons. During the post-monsoon season the frequency and density of Caulerpa species (Chlorophyceae) was minimum in the selected region of south east coast of Tamil Nadu.