The search for bacteria adapting to extreme soil moisture conditions and the assessment of the effects of hydric stress on the quality of the soil environment

The aim of this study was to identify the biological activity in fluvisols from the Vistula River valley (Lubelskie Voivodeship) subjected to the stress of a simulated flooding. The study material consisted of two different fluvisols (light - F1; medium - F2) sampled in two variants: agriculturally used (blackcurrant cultivation; -A), and not cultivated (meadow; -M). Soils taken in the form of soil blocks, which were placed in transparent containers and then simulated flood conditions by flooding them with river water to the height of 5 cm above the soil surface, were used for the model experiment. The water stagnation was maintained for 14 days. For analyses, samples were taken after 2, 4, 7, 9, 12 and 14 days from flooding as well as fresh soils.