EVALUATION OF TROPHIC STATUS OF AGRAKHAN BAY (THE NORTH CASPIAN SEA) AS A PART OF ECOLOGICAL MONITORING OF SPECIALLY PROTECTED AREAS

Abstract. Aim. Hydrochemical composition of waters of Agrakhan Bay (the North Caspian Sea), degree of pollution, structure and quantitative characteristics of phytoplankton, zooplankton and zoobenthos is given in the paper. Evaluation of a trophic status of the bay and seasonal trophodynamics are given as a result of study.Material and methods. The study is based on original materials from expeditions of 2012 (Autumn) and 2013 (Spring and Summer) in Agrakhan Bay. The complex materials are collected on stations with distance 3.5 km. Totally was made 16 marine stations, where samples of water, phytoplankton, zooplankton and benthos were taken.Results. Agrakhan Bay is eutrophic by level of dissolved oxygen and its BOD. However, the oxygen deficiency is not observed. concentration of oxygen is high almost in all seasons, that has a beneficial effect on hydrobionts. Seasonal dynamics indicates that Agrakhansky bay is oligotrophic within a year, but its trophic status increases to mesotrophic and even to hypertrophic in some periods. The northern part ща the bay is eutrophic. Difference in trophic levels of different parts of the bay is the result of significant differences in depth and area of water surface.Conclusions. Anthropogenic impact on Agrakhan Bay increases its trophic status. Seasonal trophic level of Agrakhan Gulf except natural processes depends on the "purity" of the Terek River sediments, which are the main source of biogenic elements. Typically, the absolute concentration of biogenic elements in Agrakhan Bay increases with the increase of eutrophication

EVALUATION OF CONTENT AND NATURE OF THE SPATIAL DISTRIBUTION OF HEAVY METALS (CO, ZN, PB, CD, NI, CU) IN THE WATER AREA OF AGRAKHANSKY BAY

The article presents data on the content and nature of the spatial distribution of heavy metals (Co, Zn, Pb, Cd, Ni, Cu) in the waters of the Agrakhanskiy Gulf

MEDICAL AND SOCIAL ASPECTS OF INDUCED ABORTION IN THE REPUBLIC OF DAGESTAN

Aim. The aim of the research is to consider the medical and social aspects of artificially terminating pregnancy in the Republic of Dagestan. Material and methods. To achieve this goal, we have created a database of the cases of artificial abortion in the Republic of Dagestan. Statistical processing of the results of the study was carried out using software packages like STATISTICA and Excel. Results. The total number of abortions for the study period was 157526 cases, of which 26% of cases were spontaneous abortions, 8.9% of cases were abortions for medical reasons. During the period under review, there was an increase in the number of spontaneous abortions and abortions due to medical indications by 170% and 108.6%, respectively. There is the prevalence of abortions of the pregnancy of up to 12 weekperiod, including mini-abortions, the average percentage of the total number of abortions for the study period was 90%. In the Republic of Dagestan, the average annual intensive standardized abortion rate was 14.67 cases per 1,000 women of childbearing age women of childbearing age (WCA). And among the urban population, this number is higher, and amounted to 25.57 ‰ against 6.25 ‰ in rural areas. The highest values of the average long-term intensive frequency of abortions are observed in the cities of Kizilyurt, Derbent, Makhachkala, Kaspiisk; in the countrysides: Dakhadayevsky, Tarumovsky, Laksky and Babaurtovsky districts. Conclusion. The problem of abortion, despite the steady tendency to reduce their number, still needs to be solved because it is the leading cause of maternal death in Russia, inflammatory diseases of the genitals, infertility, and it also adversely affects the course of subsequent pregnancies and births, increasing the frequency miscarriage, maternal and perinatal pathology