Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol.13, Issue 1, 2011; Page No.(5962)

IMPACT OF CLIMATIC CHANGE ON MICROBIAL POPULATION OF TAMIRABARANI RIVER

P. DHASARATHAN, M.A. HANIFFA, K. GEETHA AND V. DHANUSHKODI

Abstract

Climatic changes influence the microbial population of Tamirabarni water when samples were studied. Bacterial population in river water collected during showed a low population during summer (50%) compared to other seasons. From the population, bacterial genera such as Bacillus (two fold), Pseudomonas (60%) and Flavobacterium (50%) were comparatively more in sample collected during summer. Gram-positive cocci (50%) microorganisms were reduced greatly in samples due to temperature influence. In rainy seasons, extra cellular enzyme activities of bacterial strains isolated from water sample showed predominance in amylolytic (100%), lipolytic (91.6%), caseinolytic (89.5%) and gelatinolytic (66.6%). During summer, the activation of isolated bacterial strains of amylolytic and caseinolytic were reduced 50% remarkably. In the present investigation, attempts were made to findout whether the changes in the microbial population in water sample due to climatic/temperature influence could be used as bacteriological indicators of aquatic/ thermal pollution?

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