Assessment of amphibian population in the Water hyacinth infested village ponds with reference to pond length, width and depth in Cauvery delta districts of Tamil Nadu.

Abstract :

Tsunami, the killer wave which occurred 26, December, 2004 in the south-east coastal areas of Tamil Nadu, India, has caused high disaster in most of the coastal belts of south India. This natural calamity has changed the geographical profile of the coastal areas and nearby places. Physico-chemical parameters of Colachel estuary studied from March 2009 to October 2009 were compared with the data collected during October 2003 to May 2004 to know the pre- and post- Tsunamic status of temperature, pH, Biological Oxygen Demand, salinity, alkalinity and Dissolved Oxygen with the Colachel estuary, South India. The analysis of the two sets of data showed clear evidence that there were remarkable changes in the water temperature, pH, dissolved oxygen, salinity, alkalinity and the Biological Oxygen Demand was lower in the period subsequent to the tsunami.