Influence of biogenic metals on life activity of Daphnia magna

Influence of ions of biogenic metals, in particular Ni2+, Cu2+, Co2+, Zn2+ in a range of concentration from 5 up to 0,03 mg/l on survival rate, fertility and filtrational activity of planktonic filter-feeding organisms Daphnia magna is researched. It is shown, that the most toxic for daphnia are ions of copper which al-ready in concentration of 0,03 mg/l suppress all the specified functions. Other metals did not show toxic-ity in concentration below MPC.