On the elemental composition estimation of some herbal species of calcareous steppes and its bioindication prospects

On the territory of our country, in foreign Europe, North America, some regions there are outcrops calcareous rocks. The high endemism and same rare plant species concentration characteristic features such landscapes. results elemental composition primary assessment aboveground underground organs three from biotopes Samara region given. Three were chosen for studies: obligate calcephite Gypsophila jusepczuki i Ikonn., calcephilic Hedysarum grandiflorum Pall. (both included Red Book Region), Reseda lutea L., a ruderal species. For quantitative analysis content metals stems, leaves, flowers, roots these plants, method spectrometry with inductively coupled plasma was used. It shown that effective barrier function relation to most analyzed elements is calcephilous ( ) calcephytic species, but not . To certain extent, stem tissues play biogeochemical role A general feature especially pronounced , expressed increased Se accumulation organs.