Within the grant project «Study of an export-oriented bioresource – Artemia franciscana to develop a biological justification for their introduction, in order to increase the productivity of salt reservoirs of the Republic of Kazakhstan» employees of the laboratory of hydrobiology and hydroanalysts (Mazhibaeva Zh.O., Kozhizhanova B.A.) together with the head of the Petropavlovsk stronghold, Fefelov V.V., carried out an expedition to Lake Solyonoe (Senzharka), Zhambyl district, North Kazakhstan region, in order to collect primary material for future analysis. During the business trip they take samples for hydrochemical, hydrobiological (phytoplankton, zooplankton, zoobenthos), genetic, microbiological and biochemical studies.