Research and Design Institute of Urea and Organic Synthesis Products

Activities connected to mineral mining disrupt the soil layer and bring up to surface parent rock material. As a result, they leave behind vast areas of disturbed lands, that are difficult to restore due to altered environmental conditions. Returning these lands to the natural ecosystems is an important contemporary challenge. Soil microbiome composition reflects changes happening to disturbed lands, its analysis helps to evaluate disturbance degree and estimate the effect of implementation of remediation techniques. Also, factors connected to the characteristics of a particular geographical region have a certain impact and should be taken into account. We focus on microbiomes of disturbed lands from two sandy-gravel mining complexes in mountainous areas with moderate continental climate of Central Caucasus. These quarries share the same parent rock material but differ in benchmark soil type and presence of remediation practices. Comparative analysis of microbiome composition based on sequencing of 16S rRNA gene libraries showed that region and disturbance are the key factors explaining microbiome variation, which surpass the influence of local vegetation factors. However, application of remediation techniques greatly reduces dissimilarity of soil microbiomes caused by disturbance. Linking of soil agrochemical parameters to microbiome composition showed that disturbance factor correlates with a lack of organic carbon. Other agrochemical parameters, like pH, ammonium, nitrates and total carbon explain variation of microbiomes on a smaller scale between sampling sites. Thus, while regional and disturbance factors reflected differentiation of soil microbiomes, soil agrochemical parameters explained local variation of certain groups of microorganisms.

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A conceptual framework examines how language influences the way businessmen interact in their professional setting. The linguistic aspects of socio-cognitive modeling as the methodological basis for the contemporary business discourse analysis are in the center of the paper. The authors point out the main approaches to establishing the correlation between the cognitive activity of businessmen and the knowledge representation which is concentrated in the language of this social institute; the authors develop an original complex linguistic model of the business discourse that makes it possible to single out and explain cognitive and discursive mechanisms of how business knowledge acquires a linguistic form and to clarify the role of the language in the process of categorization and conceptualization of the business world. Moreover, taking into account the maturity of the linguistic assessment models, this paper puts forth a new linguo-cognitive model which solves the problem of the narrow-subject directives when studying the linguistic aspects of business communication thus helping to shift from the particular case of language research to a broader study of linguistic and cognitive mechanisms of an institutional discourse.