Ecological Systems and Devices Annotation << Back Some ecology aspects of inside basins in Astrakhan region Suchenko L.T. The aim of the work was to study the effects of ecological factors on quantitative and quantitative changes in water microflora of surface watercourse in for the period of 1995–2001. Seasonal dynamics of total quantity of microbes and Enterobacteriaceae and Mycrococcaceae was shown. Multfactor anthropogenous and abiotic effects on microflora of water ecosystem as expressed by decreased amount of test bacteria and increased number of opportunistic bacteria in spring-summer and autumn-winter periods were noted.