The results of analysis of catches with stationary nets made from 2010 to 2012 in the North Absheron Gulf of the Caspian Sea have been presented. 26 species of fish belonging to 8 families (16 marine species, 10 migratory and semi-migratory species ) is registered in the catches. There are data distribution and abundance of each species for all of the families are summarized. The tendency of expansion of areals of marine species (Alosa braschnikowi kisselewitschi, A.b.sarensis) to the north is registered.

The article considers ways of solving the problem of increasing the efficiency of agriculture in the North of Kazakhstan and preventing the deteriorating basis for the development of this important branch of the country. It is proposed to change the concept of agro-industrial complex management in the region as a whole.

The article describes visually detectable anomalies in the structure of the crucian carpet, which make it possible to consider them as a reliable tool for operative ecological monitoring of aquatic ecosystems under the conditions of the anthropic press. The results of the conducted studies were tested in the course of the research "The Post-Mercury Control of Mercury Pollution in the Territory of the Former PO" Khimprom", and also appear to be important in assessing the environmental risk from groundwater pollution and adjacent water bodies in the northern industrial zone of Pavlodar.

The article presents the results of the study of adaptive and productive qualities of the mountain-Altai breed of goats and their crossbreeding in the specific natural-climatic conditions of the region. The possibility of importing the mountain-Altai breed of goats and further breeding it in the conditions of northeast Kazakhstan has been determined

On the territory of the Northern industrial zone of Pavlodar in the area of the industrial wastewater reservoir «Bylkyldak» in some areas of the earth there is soil contamination with mercury, exceeding the MPC for mercury (2.1 mg/kg) by 500 times. The total mass of mercury dispersed in the surface layer of soils is 2.8 tons. The mass of contaminated soil is approximately 208,000 tons. Pollution of the territory is historical. The purpose of the article is to determine the efficiency of chemical binding (immobilization) of mercury in the soil with the Japanese drug Denite® in real field conditions of the territory of mercury contamination in the Northern industrial zone of Pavlodar using an experimental study; to determine the stability of insoluble mercury compounds formed by the preparation at extreme winter and summer temperatures and seasonal fluctuations in open ground. Soil samples were taken for the study at 11 points in the centers of mercury pollution. Laboratory studies were carried out in an accredited analytical laboratory of the Testing Center of JSC Caustic. Soil samples were treated with Denite®, the preparations obtained were stabilized, and water extracts were prepared. The content of mercury in soils, extracts from them, and plants was determined by the atomic absorption method on a RA-915+ spectrometer equipped with RP-91 and RP-91S attachments. As a result of research, the effectiveness of Denite® in the chemical binding of mercury in the soil has been proven and its optimal dosages have been determined. As a result of the positive tests of the technology of chemical immobilization of mercury, the prospect of a practical solution to the issue of demercurization of mercury-contaminated soil on the territory of the Northern industrial zone appeared.