The article analyzes the variability of climatic parameters of foothill landscapes of the North-East Caucasus: annual air temperature and precipitation and also the coefficient of moisture in last 60 years. Large temporal heterogeneity of these parameters for landscapes are characterized for the whole period, but no less – for short periods (3-5 years). In this regard, it is concluded that the short changes can reverse the effects for the landscape structure of modern climate changes.

Are represented the results of the analysis of long-term variability of the zinc, copper, lead, cadmium, manganese and nickel in sediments of the western part of the North Caspian. Article traces dynamics of mobile elements in the period from 2002 to 2009. For groups of metals identified common patterns. Zinc and copper varied in a narrow range. The greatest accumulation of these elements noted in 2003 Concentrations of lead and cadmium increased in 2005, according to the runoff, the volume of which in 2005 was the highest in the study period. Dynamics of manganese and nickel wore similar fluctuation character due to the binding feature of these elements. Marked increase in concentrations in 2003, 2005 and 2007. Found a close correlation between the average nickel and manganese in the sediments. Calculate the rate of accumulation of the bottom of the western part of the North Caspian Sea. Found that the highest accumulation in the bottom sediments of different manganese accumulation ratio of the bottom of which was 66.38. The smallest accumulation in sediments tend to zinc, the bottom rate of accumulation which was 0.26. During the study period marked areas with abnormal content of heavy metals. Such areas include land at about. hechenIsland, located in the south-western part of the North Caspian Sea, and the area west of shallow space p. Volga, have a direct influence of the main sleeve Delta. Volga

The article presents the results of the study of oribatid mites of coastal and of islands of the north-west part of the Caspian sea – the updated list of species, data about distribution of species.

This work is based on research and materials collected from 2000 to 2012, with the application of the method of selection of soil samples, according to the methodology of the quantitative survey. As a result of the conducted researches on the territory of the internal mountain Dagestan found 190 species of Oribatida belonging to 83 generations.

In the article for the first time given the characteristics of the environmental groups of longhorn beetles in the study area.

In the article for the first time given a zoogeographical characteristic of the longhorn beetles of the Republic of Dagestan. The zoogeographical analysis of the studied fauna showed that, in General it is formed from a fairly common species.

New data are given on the distribution of the carabids Clivinopsis conicicollis Reitter and Anaulacus (Aephnidius) ruficornis Chaudoir in the Caspain Lowland . Photographs of both species are provided and their distribution is mapped. C. conicicollis is for the first time recorded for Daghestan while members of the genus Anaulacus were not previously known for Russia, Azerbaidjan, Iran, and Turkmenistan. A determination key is given to distinguish between species of the genus Anaulacus and members of the related genus Masoreus Dejean.

The chromosomal complement of a Canis lupus L. in the North Caucasus is described for the first time in this work. The data about modern distribution of a wolf in this territory taking into account mountain ecosystems of caucasus is also cited. The data about number of Canis lupus L., on its regulation in natural and anthropogenic ecosystems of the North Caucasus is cited.

The effect of CdCI2 (0.25 mg /l) on the proteolytic enzyme activities of the carp tissue are studied. The results confirm the involvement of cathepsin D and neutral protease in the development of the organism's response to the action of cadmium ions.

In 2000-08 in the Jandar Lake, which is situated on the territories of Azerbaijan and Georgia, the author studied waterfowls of 23 species and found 35 species of trematodes. Trematode fauna was richer in birds with a wider range of food and bigger sizes, obligate ichthyophagous birds were infected with trematode more than birds, which rarely eating fish. Among the found trematodes 4 species are dangerous to birds, 3 species – to fish, and 3 species to human.

In this article the analysis of sets of existing methods of an assessment of biological diversity is given. There some optimum schemes and techniques of calculations are offered as well as some recommendations about application are made.

The article dealt with the possibilities of the methods of geoinformation mapping to study peculiarities of the Islands Chechen and Tuleny. Also in the article presents a technique of drawing up of digital base maps and the creation of the base of thematic layers to create a geinformation system.

Frequent occurrence of opportunistic microflora in different hydrobionts and water of the Volga-Caspian region was revealed, the representatives of the family Enterobacteriaceae, Vibrionaceae и Pseudomonaceae were predominants. They had features of pathogenicity and plural antibiotic resistance. The given data prove that they meet all criteria of natural focal sapronosis infections.

Content of biophile elements and heavy metals in herbaceous plants of Tatarstan which belong to different types of adaptive strategies on Ramenskiy-Grime theory and to different ecological groups growing in different conditions of environments water regime was investigated in the article. It was statistically proved that plants with different types of adaptive strategies differ in the content of Zn. It was established that stress tolerators accumulate the studied elements in bigger quantity, than ruderals and competitors. Decrease of content of biophile elements and heavy metals in plants in the following line was revealed: mezophytes → xerophytes → mezohigrophytes.

The comparative analysis of the variability structure of size and numerical characteristics of growth and productivity of six species of Vicia faba L. neas conried ouf in the conditions of mountainous Dagestan.

Major influence on the form of migration of trace elements in the North Caspian has Volga runoff. The bulk of the elements in the Volga waters carried in the suspended solids. The exception is zinc, transports mainly in dissolved form.
In article presents the results of a study of dissolved and suspended forms of zinc, copper, lead, and manganese in the surface water of the North Caspian Sea from 2002 to 2009. On the basis of the received data the ratio of dissolved and suspended forms of trace elements studied. According to calculations, the bulk of the copper, lead and manganese is carried in the suspended solids. Zinc migrates mainly in dissolved form. The dominant form of migration of the metal increases, depending on the season. For zinc, the migrant in the ionic state, and for copper, lead, manganese, transferring primarily in suspension, in the autumn period the increase in the proportion of dissolved (Zn) and suspended forms (Cu, Pb, Mn), respectively. Increase in the proportion of ionic forms of metals in the North Caspian occurred episodically in local areas. Over the entire study period the greatest number of excess dissolved form of weighted metal observed in the central part of the shallow zone predustevogo space p. Volga near the exit of the Kirov and Belinsky channels.