No abstract

The article describes the intensive economic activity in the second half of the 20th century, which, along with apparent global climatic changes in recent decades, led to an increase in the number of alien fish species in the water bodies of the Volga basin. There has been presented the data on the occurrence of invasive species in scientific catches in the Volga River reser-voirs, as well as in its unregulated areas and delta. The invaders’ share in the fish species composition varied from 8 to 32%, depending on the geography of sampling. Special attention is paid to the reasons and pathways of invasive species’ dispersal, as well as to changes in the genetic structure of their populations taking place during acclimatization to the new conditions. It has been proposed to utilize a combined genetic-morphological approach in order to enhance the species identification of found invaders. Collected material can be used in the development of control methods, as well as for suppressing the abundance of dangerous or undesirable invasive species

As a result of the onset of the pandemic in 2020, the global economy and the Russian economy experienced significant shocks. The trend of growth of the production market through information technologies has increased. In the process of developing information technologies and increasing the cost of economic resources, it became possible to operate new forms of enterprises and organizations-virtual organizations and virtual enterprises. The purpose of creating virtual forms of economic entities is the high rate of change in the external environment and the inability to adapt to these processes in the classical form of the enterprise. To enter new markets with high-quality products there are needed the modern forms of organization of inter-company interaction that allow reducing costs and increasing the speed of production and product quality, which becomes possible with network interaction between high-level professionals. The study describes the approaches of well-known scientists in the classification of the virtuality of the enterprise, in terms of the network form of interaction. There are described the characteristics of a virtual organization, which is a complex vertically integrated structure of many participants-companies operating with the support of a virtual network platform. Participants of a virtual organization have a wide range of key competencies, which allows them to participate in the creation of virtual enterprises by customer enterprises, to perform tasks for a single project. The article describes the features of a virtual enterprise organized to perform specific tasks for the project being implemented. There are described the organizational structure of the virtual organization management and the function of the manager, depending on the stage of the organization's life cycle. The structure of the virtual organization (virtual network platform, virtual enterprise, network broker) is illustrated, the functions of the manager are listed. The conclusion is made about the attractiveness of the virtual organization model for small and medium-sized businesses. The significant growth of the online market and strengthening of the positions of virtual organizations in the near future are predicted, due to changes in the economy in the context of the COVID-19 pandemic