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Introduction: Cave environments host diverse microorganisms and they are sites of active mineral precipitation. The subject matter of cave geomicrobiology deals with the interactions of microbes with minerals present in caves. Microbes and their metabolisms are important drivers of biogeochemical processes. Several microorganisms have been identif ied in caves such asActinobacteria sp., Leptothrix sp., Myxobacteria sp., Pseudomonas sp., Bacillus sp. etc. (Cañaveras 2001; Northup , 2011; Baskar , 2012, 2016) of which some are useful in biorestorationapplications. Researchers have demonstrated the ability of microbes isolated f rom the caves and marine environments to form biominerals under controlled conditions (Danielli & Edington, 1983; Rivadeneyra 1993; Baskar , 2006, 2014, 2016). Though the Indian sub-continent hosts a number of caves, only a handful reports have focussed on the geomicrobiology of caves. Paleoclimatological studies, biospeleology and some attempts on cave microbiology have been made in some caves of Chhattisgarh (Biswas, 1992; 2010; Sinha , 2011; Yadava 2007; Biswas & Shrotriya, 2011; Rajput , 2012a,b, 2014; Rajput & Biswas, 2012; Biswas 2011; 2015). The present study reports on the geomicrobiological studies of some caves from Chhattisgarh. The main objective of the study is to understand the metabolic capability of the isolated microbes from thesecaves inprecipitating calcite .

Microbes Identified from Some Caves of Bastar, Chattisgarh and their Biocalcifying Abilities