Discusses aspects of environmental assessment of biocenoses in protected areas of the country. Due to the high anthropogenic press, there is a need for an environmental assessment of soil and vegetation cover and avifauna in specific changing environmental conditions in Altyaghach National Park. As a result of studies on various parameters, estimated ecological scales were compiled for the soil, vegetation cover and for the avifauna of this territory. Based on the compiled scales, ecological assessments for biotopes were calculated. The highest average ecological value is estimated for the residential biotope 87, and the lowest in the mountain–steppe biotope 62, for the dense forest biotope 82 and 69 for woodland forest. The Altyaghach National Park has an average ecological rating of 89 for the land cover, 68 for the vegetation cover and 69 for the avifauna. The total ecological assessment based on the three ecosystem components throughout in the Altyaghach National Park is an average of 75 points.

В работе приводятся результаты исследований состава зообентосных сообществ озера Прорва (Западно-Казахстанской область, Казахстан). За период исследовании выявлено 27 таксонов донных беспозвоночных из 6 классов. Анализируются показатели численности и биомассы гидробионтов, по составу и структуре зообентоса вычислены индексы разнообразия, сапробности и оценен уровень кормности озера. The paper presents the results of studies of the composition of zoobenthos communities of Prorva lake (West Kazakhstan region, Kazakhstan). During the study period, 27 taxa of benthic invertebrates from 6 classes were identified. The indices of the abundance and biomass of aquatic organisms are analyzed, the indices of diversity and saprobity are calculated according to the composition and structure of zoobenthos, and the level of feeding of the lake is estimated.

The article presents the results of the study of macrozoobenthos communities of six lakes in the West Kazakhstan region in the summer-autumn period: Shalkar, Balykty Sarkyl, Edilsor, Glubinnoye, Prorva and Sulukol. Lakes Prorva and Sulukol are located within the steppe, the lakes Shalkar, Balykty Sarkyl, Glubinnoye - in the semi-desert, Lake Edilsor - in the desert zone. In total, 197 samples of zoobenthos were taken according to generally accepted hydrobiological methods. There are analized the indices of the number and biomass of aquatic organisms in the studied reservoirs. According to the results of the studies carried out, the organisms of 66 taxa from the groups Oligochaeta, Hirudinea, Bivalvia, Gastropoda, Crustacea, and Insecta were found in benthic samples. Of thesethere were found oligochaetes - 2 species, leeches - 1 species, bivalves and gastropods - 3 species each, crustaceans - 4 species and insects - 53 taxa. Among insects, dip-terans (23 taxa, of which chironomids - 18), mayflies, caddis flies, dragonflies, bugs and beetles were distinguished by the greatest species diversity. It was noted that in the composition of benthic communities, diptera larvae dominated in abundance, the main contribution to the biomass was made by bivalve molluscs. Calculations of the Shannon – Weaver index demonstrate a low species diversity of communities for all water bodies. The highest indices of species diversity were noted in Lake Edilsor - 1.64 bit / specimen, the lowest - in lakes Sulukol and Shalkar - 0.6 bit / specimen. and 0.7 bit / copy. respectively. According to the calculations of the saprobity index, lakes Glubinnoye, Prorva and Balykty Sarkyl belong to the ß-mesosaprobic zone, Lake Edilsor (S = 2.72) to the ɑ-mesosaprobic zone, and the indicators of Lake Sulukol (S = 3.8) correspond to the polysaprobic zone. The values of the saprobity indices of the studied lakes lie within the beta-mesosaprobic – polysaprobic zones. By water quality the studied lakes are assessed as moderately polluted and polluted. According to the classification of S.P. Kitaev (2007) the investigated water bodies are assessed as water bodies of medium feeding. The conducted studies have significantly expanded the taxonomic lists of benthic organisms in this region

В работе представлены результаты исследования зоопланктонных сообществ шести разнотипных озер Западно-Казахстанской области республики Казахстан в летне-осенний период 2018–2019 гг. В составе зоопланктона отмечено 76 таксонов, видовое богатство обуславливали представители типа Rotifera (47 таксонов), группы Copepoda и Cladocera представлены 18 и 11 таксонами, соответственно. Оценка уровня сапробности по методу Пантле и Букка в модификации Сладечека показала, что для большинства исследованных участков озер характерен β-мезосапробный уровень сапробности. Качество воды исследованных озёр оценивается как умеренно загрязнённое. The article presents the results of a study of zooplankton communities of 6 different types of lakes in the West Kazakhstan region in the summer-autumn period of 2018-2019. In the zooplankton composition, 76 taxa were recorded. The species richness was mainly determined by representatives of the Rotifera type (47 taxa), the Copepoda and Cladocera groups are represented by 18 and 11 taxa, respectively. The majority of the studied lake areas are characterized by a beta-mesosaprobic level of saprobity according to the assessment of the level of saprobity by the Pantle and Buck method in the Sladechek modification. The water quality of the studied lakes is assessed as moderately polluted.