When working with rare plant species, applying morphometric techniques is one of the main ways to obtain a representative data set on plant individuals and the state of particular populations growing ...in different ecological conditions and experiencing different degrees of anthropogenic load. Zygophyllum pinnatum, an understudied species growing on the territory of the Republic of Bashkortostan, the Orenburg region, and the Republic of Kazakhstan, is referred as a rare species. The purpose of the work is to study morphometric parameters and reveal the vitality structure of the Z. pinnatum coenopopulations in two regions of the Russian Federation (the Republic of Bashkortostan and Orenburg region) and in the north-west of the Republic of Kazakhstan (the Aktobe Region). Applying standard morphometric techniques, we analyzed the state of 16 coenopopulations of the species. Judging by most morphometric parameters, the leadership belongs to the individuals from the “Troitsk Cretaceous Mountains” coenopopulation located in the Sol-Iletsky District of Orenburg oblast, where, apparently, the most optimal plant conditions are formed (the absence of human impact and low projective cover of the grass stand to have a favorable effect). The minimum values for most parameters are recorded in the coenopopulations located on the territory of the Republic of Kazakhstan, resulting from arid growing conditions. The variability of most characters is within the normal range of the species response (Cv—5.0–44.6%). The discriminant function analysis revealed the morphostructural similarity of individuals from most coenopopulations. Regarding vitality, eight coenopopulations are prosperous, and another eight are depressed. The condition of the species coenopopulations is stable; however, the species is not provided with proper protection measures. Therefore, further monitoring of its habitats and improvement of environmental measures are necessary.
The article is devoted to the study of employers’ perceptions of the competences of employees in the shipbuilding, fishing and forestry industries of the Arkhangelsk Oblast in the context of ...digitalization and automation of production. As part of the sociological research, the team conducted a questionnaire survey and semi-structured interviews among representatives of enterprises in these industries. The results of the research allowed drawing conclusions that the professional competencies of employees, as well as abilities to work independently, in non-standard situations and under stress are currently the most in demand for employers. There is also a very high demand for qualities associated with discipline and the desire to develop in the profession. In terms of the size of enterprises, the higher requirement for almost all competences in small and medium-sized enterprises compared to large employers is noteworthy. The authors conclude that about half of the enterprises in the shipbuilding, forestry and fishing industries of the Arkhangelsk Oblast have implemented automation and digitalization into all key production processes. In the near future, more than 50% of employers expect a high demand for employee competencies related to the use of new production technologies. The survey revealed a gap between employers’ expectations and the actual level of professional training and skills of recent graduates of educational institutions of higher and secondary vocational education, including with regard to the most in-demand knowledge, skills and abilities. In the context of industries, it is noteworthy that the level of satisfaction with the training of graduates of shipbuilding industry is much lower, except for those who received education through the “Plant-University” system (Severodvinsk).
Paleontological excavations in Korydornaya Cave, located on the southern side of the Pompeyev Mountain Ridge in the Jewish Autonomous Oblast, Russia, and the resulting material analysis allowed to ...significantly expand the Late Pleistocene range of the recently described Tonomochota pika genus (Tiunov, Gusev 2021). This research describes a new species of this genus. Besides the new species Tonomochota khinganica sp. nov., the bone remains of Tonomochota khasanensis Tiunov et Gusev, 2021 and Ochotona hyperborea Pallas, 1811 were discovered in cave deposits. The cave deposits were formed mainly during a warm period of the Karginsky interstadial about 50,000 years ago.
Purpose. To investigate the anthropogenic communication of the Cherkasy oblast as an ecosystem-forming component of the modern landscape structure of the area of research. Research materials and ...methods.
Methods. On the principle of natural-anthropogenic coexistence general scientific and specific scientific research methods were applied.
Results. The peculiarities of natural conditions and natural resources are determined by the geographical location within the borders of the Dniester-Dnieper and Left Bank-Dnieper forest-steppe regions of the East European plain country. The class of road landscapes of the study area is formed by the following types of roads, namely: automobile, dirt, forest and field roads, railways. In the landscape structure of Zvenyhorod district, the length of highways, unpaved roads, field and forest roads, railways. Uman district and Cherkasy district have the highest index of connectivity in terms of road length. The lowest indicators of the index of communication in terms of the length of highways in Zolotoniskyi district. Uman district has the highest index of communication in terms of the length of dirt roads, and Zvenigorodsky district has the lowest. Zolotoniskyi district and Cherkasy district have the highest index of communication in terms of the length of field and forest roads. The lowest indicator is Zvenigorodsky district, Uman district. Cherkasy district has the highest communication index in terms of railway length and Zvenigorodsky district has the lowest.
Conclusions. The Zolotonisky district of Cherkasy region has the highest index of general anthropogenic communicability, i.e. it has the highest degree of anthropogenic transformation of the territory and anthropogenic load
For the model of a multi-node energy market, the problem of maximizing social welfare is considered. Social welfare refers to the difference between the total utility of consumption and total ...production and transportation costs. Algorithms for solving this problem are proposed in our previous papers. These algorithms can be used to assess the prospects for gasification of arbitrary non-gasified regions of the country, if estimates of the initial parameters of the model are known - the functions of production costs and demand in nodes and the functions of transmission costs in lines. In this paper, methods for obtaining such estimates are proposed, as well as the results of the analysis of the prospects for gasification of Irkutsk oblast obtained using the described approaches are presented.
Native plant species growing on contaminated sites in an urban environment successfully develop under strong anthropogenic pressure and thereby may have the potential for phytoremediation. The ...concentrations of potentially toxic metals were measured in leaves, roots, stems, and inflorescences of fifteen Brassicaceae plant species from the urban park of Botanical Garden of Komarov Botanical Institute. The potential of phytoextraction and phytostabilization of the species was evaluated considering the concentration of Cd, Cu, Ni, Pb, Zn in the plant organs, and the bioconcentration factor (BCF) and the translocation factor (TF). The metal content in plant organs varied with plant species. The study of metal accumulation in plants showed that Brassica campestris has the potential for the simultaneous phytoextraction of three metals Zn, Cd, and Cu, and Rorippa palustris – of two metals Zn and Cd. According to received data, species Sinapis arvensis and Thlaspi arvense can be considered adequate candidates for soil Zn and Pb phytostabilization and soil conservation.
•Brassicaceae species have the ability to develop successfully under strong anthropogenic pressure.•These species are accumulated high concentrations potentially toxic metals in their organs.•Brassica campestris has the potential for the simultaneous phytoextraction of Zn, Cd, and Cu.•Rorippa palustris should be used in phytoextraction of Zn and Cd.•Sinapis arvensis and Thlaspi arvense – adequate candidates for soil Zn and Pb phytostabilization.
