Implification of ephippium analysis (Cladocera, branchiopoda, crustacea) for reconstruction of past environmental changes in central yakutia, Russia

© SGEM2017. All Rights Reserved. The aim of our investigation is to reconstruct the local and regional palaeoenvironmental conditions and to highlight the rapid evolution of the thermokarst lake during the Holocene climate optimum. The investigated lake was located in Central Yakutia, Siberia, Russia. The investigated core was collected in a small pingo within a large Central Yakutian thermokarst Khara Bulgunnyakh basin (alas). According to ephippium analysis the formation of the lake coincided with the Holocene climatic optimum. Using cluster analysis we identified three statistically significant ecological zones that reflected changes in the species composition of sub-fossil cladoceran communities and sharp increase in concentrations of ephippia per sample. The period of optimal conditions for Cladocera that took place between 6500 and 6350 cal. yrs. BP is characterized by complex community structures and numerous resisting eggs of cladoceran remains deposited in sediments. Development of the lake ecosystem was rapid and it disappeared quite quickly

Transformations in socio-economic development of the Gulf group states

The article is devoted to the national economy transformations of the GCC States (Cooperation Council for the Arab States of the Gulf countries). This paper analyzes the dynamics of socio-economic development of the Gulf Group countries for the last 10 years, compares and systematizes the traditional and unique statistical data in order to prove the hypothesis that the positive dynamics was not only due to the high hydrocarbon prices on the global market but also to the successful structural transformation. The growth of the regional economy in the conditions of an almost threefold drop in world oil prices over the past three years is shown. We use systemic approach, comparative and statistical analysis. As the analysis of economic situation and development in the GCC countries at the current stage shows, all of them need to change the structure of the national economy and diversify it in order to reduce the dependence from mining industries, world prices fluctuations. This paper proposes a number of practical considerations and appropriate measures for the formation of more rational structure of the national economies, including the diversification of the sources of budget revenues through expanding industrialization; accelerating development of solid minerals and the creation of new industries using them. As Gulf States belong to the group of emerging countries and the structure of their national economies is similar with the Russian economy, the factors of the positive changes of the national economies will be useful for Russian and foreign researchers

Subfossil cladocera (Branchiopoda, Crustacea) in climatic and palaeoenv1ronmental investigations in eastern Siberia (Russia)

© SGEM 2016.Cladocera (Crustacea: Branchiopoda) is a key component of aquatic ecosystems. Their community structure reflects combination of physical, chemical and biological characteristics of the system they inhabit. The aim of this research is to study the taxonomic and ecological diversity of cladoceran microfossil assemblages of eastern Siberia to determine their distribution within the region with regard to environmental gradients, as well as to reveal the influence of environmental factors on structuring cladoceran communities with special regard to climate-dependant environmental parameters. We study remains of subfossil Cladocera taken from lakes and ponds located in north-eastern Siberia (Russia). Distributions of the cladoceran taxa, however, revealed substantial shifts in cladoceran communities in relation to temperature along the investigated transect. Overall, the importance of climate dependant physical and chemical factors in structuring cladoceran communities is similar to results obtained from other previously studied regions and suggests that Cladocera may be useful ecological and palaeoenvironmental indicators in the poorly studied regions of Russian Arctic

CHANGES IN CLADOCERAN ASSEMBLAGES FROM A SMALL ARCTIC LAKE (NENETS AUTONOMOUS OKRUG, RUSSIA)

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NEW “GREEN” METHOD OF BROMINATION OF (–)-NOPINONE AND (+)-CIS-VERBANONE

This work was supported by the Integrated Program of Ural Branch of RAS (project № 18-3-3-17)

Zooplankton communities of the lena river delta (Siberia, Russia)

© SGEM2016.The article represents the current status of zooplankton communities in different types of water bodies of the Lena River Delta (The Republic of Sakha (Yakutia)), Eastern Siberia, Russia. Zooplankton species compositions have been investigated in each of thermokarst and polygonal lakes of the areas of study. The diversity of zooplankton species was clearly dominated by representatives of the type of Rotifera. On the other hand, Cladocera and Copepoda species were represented approximately in equal proportions. The abundance of Rotifera was higher in zooplankton communities. The zooplankton abundance was determined by rotifers, the biomass – by Copepods. The main species complex consisted of Kellicottia longispina, Keratella cochlearis, Conochilus unicornis, Eudiaptomus graciloides, Cyclopos genera and juvenile cladocerans. The reservoirs were characterized as clean or moderately polluted and oligosaprobic with deviation in β-mezosaprobic zone. The communities were dominated by widespread zooplankton species where Holarctic and Palearctic organisms were presented approximately in equal proportions. According to biotopic distribution eurytopic species represent half of all the specific composition, planktonic and littoral species we re presented in equal proportions. Zooplankton communities in thermokar st lakes we re more similar to themselves than the thermokarst and polygonal waterbodies’ zooplankton communities. There wa s clearly seasonality in dominance of zooplankton species and their association with a type of the water body

Bioacustic Correction application in the psychologist’s practice

© 2016 Komarova.The relevance of the topic is justified by usage of the cutting edge technologies (instrumental approaches to correction) in the psychologist’s practice that requires high qualified professional level of psychological and pedagogical competence as well as the other skills for effective correction of psycho-emotional, speech, and cognitive functions of the patient with cerebrovascular disturbance. The objective of the paper is to develop methodical approaches and arrange the psychologist’s work employing the state-of –the-art technologies. The leading approach to the research of the topic is the modeling method that allows studying the topic as a direct and organized process of honing the professional skills. The paper structure includes the target, content, organizational and procedural, and effective components. The enhancement of the differentiated approach to speech and psychological recovery of patients with cerebrovascular disturbance by means of “Sinhro-S” bio-acoustic correction (BAC) allows rehabilitating the lost functions efficiently and boosting the experts ‘professional skills

Climate and environmental reconstructions of bolshezemelskaya tundra based on subfossil cladocera remains from kotovo lake (Kharbey system)

© SGEM2017. All Rights Reserved. The aim of the study was the analysis of subfossil Cladocera community of the Kotovo lake (Kharbey lakes' system, Bolshezemelskaya tundra) and the qualitative rating of the changes in it and in the region of study. The relevance of the work is associated with the increasing interest to the study of the climate change on the example of the North intact territories, along with the insufficient knowledge of the biota of the area being studied. The predominance of some species, zoogeography and biotopic attachments of identified taxa, shifts in qualitative consist of subfossil Cladocera taxocenoses, which took place during the lake evolution, were revealed in frames of the investigation. In the consist of Kotovo lake 17 taxa of subfossil Cladocera community were registered. The greatest number of the identified taxa refers to the Chydoridae family, while the representatives of the Daphniidae and Bosminidae families are found in smaller quantities. The lack of the obvious dominants in Cladocera community was established by using Lubarsky scale, subdominants are represented by Chydorus cf. sphaericus, Alona affinis and Bosmina (Eubosmina) sp. In the column of lake bottom sediments the change of the predominant species was registered: previously prevalent representatives of the genus Alona were replaced by Chydorus cf. sphaericus. The reconstruction of the climatic and environmental conditions of the geological past of the region being studied were produced according to the received results; and the changes in environmental conditions were matched with a particular period of geological time. Subfossil Cladocera taxonomic diversity of the lakes Kotovo and Bolshoy Kharbey (largest lake of Kharbey system) was compared. The comparative analysis of the modern structure of the Cladocera from the lakes of the Kharbey system with remains of Cladocera from bental sediments was carried out. The analysis of the received results indicates the eutrophication of the lake, the expansion of the littoral zone and reflects the climate warming

Identification of indicator species of zooplankton organisms by COI gene fragment for estimation of ecological state of a water body

© 2016, International Journal of Pharmacy and Technology. All rights reserved.Nowadays various methods are used for estimation of ecological state of water bodies; the method of bioindication is one of them. Identification of indicator species of aquatic organisms via the visual method with the aid of a microscope may be performed with a high degree of certainty only by highly experienced zoologists. This method requires deep knowledge of morphological description of every organism, which includes approximately from 15 to 25 characteristics, thus the method greatly depends on subjectiveness of an investigator. At the same time the known methods of molecular genetics are used for determination of the taxonomy of organisms but have not been still used in ecological investigations of water bodies. The method of DNA barcoding which was used by us for identification of indicator species of zooplankton in freshwater bodies in the city of Kazan is one of such molecular methods. The experiment resulted in sequence analysis of the four base sequences of COI gene fragments which were added to the GenBank international database under the following unique numbers: Scapholeberismucronata - HQ336794 (658 bp), Moinamicrura - HQ336797 (658 bp), Mesocyclopsleuckarti - HQ336795 (658 bp), Brachionuscalyciflorus - HQ336793 (660 bp). The estimation of three lakes in Kazan city is based on identification of indicator species of zooplankton by COI gene