Environmental Microbiology Reports, Год журнала: 2024, Номер 16(5)

Опубликована: Окт. 1, 2024

Abstract Extreme environments, such as highly saline ecosystems, are characterised by a limited presence of microbial communities capable tolerating and thriving under these conditions. To better understand the limits life its chemical microbiological drivers, brine groundwaters Na‐Cl Na‐Ca‐Cl types with notably diverse SO 4 contents were sampled in water intakes springs from sedimentary aquifers located Outer Carpathians Carpathian Foredeep basin basement Poland. Chemical methods used to identify composition groundwaters, determine diversity, indicate processes controlling their distribution using multivariate statistical analyses. DNA sequencing targeting V3‐V4 V4‐V5 gene regions revealed predominance Proteobacteriota, Methanobacteria, Methanomicrobia, Nanoarchaea most samples, irrespective geological context. Despite sample‐size constraint, redundancy analysis employing compositional approach hydrochemical predictors identified Cl/SO Cl/HCO 3 ratios, specific electrical conductivity, key gradients shaping communities, depending on analysed regions. Analysis functional groups that methanogenesis, sulphate oxidation reduction, nitrogen cycle define distinguish halotolerant samples. These an inverse relationship between methanogens sulphur‐cycling microorganisms.

Язык: Английский