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Research Journal of Environmental Toxicology
Year: 2012  |  Volume: 6  |  Issue: 1  |  Page No.: 13 - 24

Screening of Bacterial Isolates from Various Microhabitat Sediments of Kotumsar Cave: A Cogitation on Their Respective Benefits and Expected Threats for Complete Biosphere and Tourists

Yogita Rajput, Vibhuti Rai and Jayant Biswas    

Abstract: Bacterial communities are often found to play a major role in building the foundation of food chain in the food starved cave ecosystem. Earlier it was assumed that due to lack of direct external environmental impact the caves were an almost sterile ecosystem. But today, the ever increasing human activities inside it, in the form of ecotourism exert a major impact on its native microbes, often stopping its growth and polluting the whole ecosystem. The situation is often found to be responsible for producing some human pathogenic bacteria inside it, which might pose a threat of infection to the other tourists. Kotumsar cave is a well known tourist pulling limestone cave from central part of India which is also a harbour of various native cavernicoles. In the present study, the bacterial communities existing in different sediments of this cave were screened and identified. The growth rates of each isolate were also verified against various temperature ranges and the maximum growth was found to coincide with the annual mean temperature of the cave. Further, the impact of the same has been correlated with the existing biodiversity, geophysical factors and the human activities inside the cave. Finally, the probabilities of pathogenic threats to human beings due to the respective bacterial communities have also been discussed.

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