TY JOUR TI BIOCUMULATION OF MICROELEMENTS IN BENTHIC ORGANISMS AND THEIR MIGRATION IN THE BIOTA OF THE LAKE BALKHASH KW Lake Balkhash KW biota KW benthic organisms KW biomass KW gross output KW microelements KW biocumulation KW accumulation KW migration JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Lopareva, T.. AU Anureva, A.. PY 2015 IS 2015 PB Astrakhan State Technical University