Shtennikov, Mykola D.2017-11-282017-11-282016"Molecular microbiology and biotechnology", International scientific conference": abstracts, Odessa, Ukraine, June 21-23, 2016 / Odessa I.I. Mechnikov national univ. ; Chairman: V. O. Ivanytsia [et al.] . – Odessa, 2016.https://dspace.onu.edu.ua/handle/123456789/11586Aerobic endosporeforming bacteria (AEB) represent very useful group of bacteria for geological and ecological investigations. They are comparatively simple for determination, isolation, cultivation, and can survive in sedimentary rocks for a long periods of time (Nicholson W. L., 2002). In closed sea basins with a big river infows, like a Black sea, number of mesophilic (i.e., allochthonous) AEB in different layers of bottom sediment can strongly correlate with intensity of river inflow. But, natural gradients of different scales can occur in sediment column. Because temperature sediments of Black Sea (appx. +9˚C) is not advantaged for mesophiles, we supposed that comparison of dependences from depth of portions of meso- and psychrophilic AEB in sediment column can answer question about origins of the mesophilic AEB in sediments and, hence, applicability it for geological reconstructions (Mandic-Mulec I. et al., 2015, & Nicholson W. L.,2002).enaerobic endosporeforming bacteriaBlack SeamicrobiologicalArticle