dc.contributor.author | Roy, C. | |
dc.contributor.author | Mondal, N. | |
dc.contributor.author | Peketi, A. | |
dc.contributor.author | Fernandes, S. | |
dc.contributor.author | Mapder, T. | |
dc.contributor.author | Volvoikar, S.P. | |
dc.contributor.author | Haldar, P.K. | |
dc.contributor.author | Nandi, N. | |
dc.contributor.author | Bhattacharya, T. | |
dc.contributor.author | Mazumdar, A. | |
dc.contributor.author | Chakraborty, R. | |
dc.contributor.author | Ghosh, W. | |
dc.date.accessioned | 2020-12-31 | |
dc.date.accessioned | 2021-02-09T10:13:16Z | |
dc.date.available | 2020-07-23 | |
dc.date.available | 2021-02-09T10:13:16Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Journal of Earth System Science, vol.129(1); 2020; Article no: 157 | |
dc.identifier.issn | 0973-774X | |
dc.identifier.other | https://link.springer.com/article/10.1007/s12040-020-01423-y | |
dc.identifier.uri | https://doi.org/10.1007/s12040-020-01423-y | |
dc.identifier.uri | http://drs.nio.org/drs/handle/2264/8471 | |
dc.description | IF2019 - 1.423 | |
dc.description.abstract | Geomicrobiology of sulfur-boron-dominated, neutral-pH hydrothermal systems was revealed in a Trans-Himalayan spring named Lotus Pond, located at 4436 m, in Puga Valley, Ladakh (India), where water boils at 85°C. Water sampled along Lotus Pond's outflow (vent to an adjacent river called Rulang), representing an 85-14°C gradient, had high microbial diversity and boron/chloride/sodium/sulfate/thiosulfate concentration; potassium/silicon/sulfide/sulfite was moderately abundant, whereas cesium/lithium small but definite. Majority of the bacterial genera identified in the 85-72°C samples have no laboratory-growth reported at >45°C, and some of those mesophiles were culturable. Sulfur-species concentration and isotope-ratio along the hydrothermal gradient, together with the distribution of genera having sulfur-oxidizing members, indicated chemolithotrophic activities in the 85-72°C sites. While biodiversity increased in the vent-to-river trajectory all-day, maximum rise was invariably between the vent (85-81°C) and the 78-72°C site; below 72°C, diversity increased gradually. Biodiversity of the vent-water exhibited diurnal fluxes relatable to the sub-surface-processes-driven temporal fluxes in physicochemical properties of the discharge. Snow-melts infiltrating (via tectonic faults) the ~160°C geothermal reservoir located within the breccia, at ~450 m depth, apparently transport mesophilic microbes into the thermal waters. As these micro-organisms emanate with the vent-water, some remain alive, illustrating that natural bacterial populations are more heat-resilient than their laboratory counterparts. | |
dc.language | en | |
dc.publisher | Springer | |
dc.relation.ispartof | J Earth Syst Sci | |
dc.relation.isreferencedby | SCI | |
dc.rights | Only the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations | |
dc.title | Geomicrobial dynamics of Trans-Himalayan sulfur-borax spring system reveals mesophilic bacteria's resilience to high heat | |
dc.type | Journal Article | |
dc.affiliation.author | Bose Institute, P-1/12 CIT Scheme VIIM, Kolkata 700054, India | |