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Populations of species living at the edge of their range need long-term and constant monitoring to analyze the number and condition of individuals of the species. When populations fall out of natural phytocenoses in conditions of regulated nature management, it is possible to restore these cenopopulations by repopulation. For optimization of work on structuring of data on populations, a GIS-map of medicinal plants was created. A full set of studies has been carried out for Bupleurum aureum populations, which are experiencing significant anthropogenic pressure near the western border of its range. The species has practically disappeared from the broad-leaved forests of the Predvolga region. The created GIS-map contains information with precise georeferencing of the identified cenopopulations in relation to landscape and soil type. Another block of the GIS-map database contains information on productivity and genetic polymorphism of cenopopulations, which should be taken into account when restoring lost populations.The conducted studies have shown that the share of generative plants of B. aureum in the population decreases when the light intensity decreases in the forest. In this case, individuals preserved in meadows adjacent to the forest are of great importance. It can be assumed that forest edge communities are important key sites for the conservation of forest biodiversity.

This work presents the structural analysis of rare medicinal plants of the flora in Tatarstan, Russia. The wild medicinal flora of Tatarstan includes 357 species, 9.5% of which have the status of protected plants. In Tatarstan, the protected species belonging to the subkingdom Higher spore plants are represented by two classes, two families and three genera. Protected Seed plants include Gymnosperms, represented by one class and one family, but the basis of the flora is formed by Angiosperms, including two classes, 15 families and 30 species. The most numerous families of rare plants in Tatarstan are Orchidaceae and Ericaceae. All representatives of this family are tuberiferous plants. Limited vegetative propagation leads to the reduction in species abundance. Plants of the family Ericaceae are confined to the ecological-cenotic group of oligotrophic plants, the distribution of which is associated with rare communities of sphagnum bogs. In general, on the territory Tatarstan, the composition of protected medicinal plants is dominated by wetland species. Among rare plants, more than 40% are located on the border of their range. However, the most common limiting factor for rare and endangered species is the direct or indirect influence of human activities on the natural habitats of medicinal plants.

Wild hop (Humulus lupulus L.) is a double-headed perennial climbing plant that belongs to the Cannabaceae family. Hops contain many biologically active compounds possessing powerful antimicrobial, antioxidant and antifungal activity, due to which its original use was for medicinal purposes and only later began to be used in beer production. The aim of the work was to identify the effects of growth regulators (hibbersib and epin-extra) and biofertilizer (powder) on the content of soluble phenolic compounds, flavonoids, tannins, carotenoids, vitamins C and B, protein and sugars in plants of common hop (Humulus lupulus L.) during ontogenesis. Root cuttings of hops were planted in the beginning of May 2022 in protected ground under laboratory conditions. In the second variant rootstock were potted in soil with 10 g/kg powders; in the third variant rootstocks were treated with hibbersib (666.6 µg/l) by spraying; in the fourth variant also, rootstocks were treated with epin-extra (500 µl/l) by spraying. After 4 weeks, all variants were transplanted to the open field. The samples for analysis (leaves) were taken 4, 8, 12 and 16 weeks after planting in the open ground, the average night temperatures were +160C, +240C, +140C and +70C, respectively. Phytochemical composition of leaves was determined by spectrophotometric method. In control plants the content of phenolic compounds and vitamin C reached the highest values in the twelfth week after planting. The synthetic growth regulators (epin-extra and hibbersib) and the biofertilizer (pudrete) were shown to change the phytochemical composition of the hop plants to different extents. Powdertet increased the vitamin and protein content to a greater extent whereas growth regulators increased the content of phenolic compounds and sugars, particularly under the influence of hibbersib.

Nowadays, the ‘greening’ of the economy based on implementation of modern development priorities such as increasing the value of nature, natural resources, as well as a human being, human life and health has the prime importance for achieving sustainable development. Solving the problem of production and consumption waste is becoming one of the priority areas, since it simultaneously contains the following components: economic (disposal cost, saving natural resources), environmental (reducing releases of harmful substances into the environment) and social (new jobs, reducing the burden of diseases, fostering an attitude of care towards nature among the population). The creation and development of regional clusters of waste processing can be a key element in solving the problem.