Indigenious water microflora as well as the presence of metaland xenobiotic biotransforming bacteria were investigated in waters near the KCM Pb-Zn smelter, South Bulgaria. Content of As, Hg, Cd, Mn, Pb, Cu and Zn exceeded in times the maximum permission standart. Absence of some microbial groups demonstrated a change in the microbial community structure in the region. Ecotoxicology test ISO/DI...

heavy metals are toxic elements which have a harmful effect on the natural environment and its habitats. investigation of the effect of rose mallow extract on physiological potential improvement of common carp is the aim of this study. 150 fish juvenile (50-100 gram) have been considered for a 14 days in four groups including control, pre treatment, metal only and metal+rose mallow extract. for...