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Articles by R. Karthikeyan
Total Records ( 2 ) for R. Karthikeyan
  R. Karthikeyan and T. Balasubramanian
  A detail study of sea snakes (family: Hydrophidae) occurring in the Coramantal coastal region (south east coast of India) has reveled the presence of thirteen species included in five genera. In this study the systematic, ecology, biology and distribution of thirteen species embraced in five genera, which are present in the collections done during 2003 to 2006 are given. The distribution patterns of all the valid species known to occur in the Coramantal coastal region are also included from a detailed study of the literature.
  R. Karthikeyan , S. Vijayalakshmi and T. Balasubramanian
  Attempts have been made to quantify the heavy metal and heavy metal resistant bacteria in the two stations in Uppanar estuary (Lat 11°43’ Long 79° 49’). The distribution of selected heavy metals (Hg, Cd, Cu and Zn) and the level of metals in the sediment was in the order of Zn>Cu>Cd>Hg. The existence of profound seasonal variation in the distribution of metals and heavy metal resistant bacteria in the sediments was observed. The metals and their resistant bacteria were maximum during monsoon and minimum during summer. The higher level of metal concentration and bacterial population were recorded near common effluent discharge from SIPCOT industrial complex, as it receives more quantities of industrial waste.
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