Grid System Analysis of Urban Flora of Bukhara City (Uzbekistan)

This article presents information on the study of the flora of Uzbekistan based on grid system mapping. The urban flora of the city of Bukhara was researched in it. As a result of research, the territory of Bukhara city was divided into 85 indexes based on 1 × 1 km2 grid mapping system. The diversity and density of species in the indexes are determined. The influence of anthropogenic factors on the diversity of species in the indexes is determined.

Influence of External Factors on Algae Biomass in Lake Khadicha (Bukhara, Uzbekistan)

Aquatic plant communities, which largely determine the ecological state of aquatic ecosystems and the quality of their waters, are the most important components in the biological monitoring system. Lake Khadicha is a unique natural body of water that is used for growing commercial fish. In recent years, due to heavy loads of abiotic and anthropogenic factors, the lake water has become highly saline. This phenomenon greatly affects the biodiversity of aquatic organisms, in addition to algae. During 2019-2021, the algae flora of Lake Khadicha was studied. 216 species of algae were identified as part of the algal flora. Their relationship with external factors such as water temperature, salinity and pH was studied. The seasonal abundance and biomass of algal flora areas of the lake were determined. Quantitative indicators of the dominant species in each season and their bioecological characteristics are identified.

Distribution and Taxonomy of High Plant Species in Lake Karakir Bukhara Region

Lake Karakir (system of lakes) is located in the north west of Bukhara Oasis, it consists of 3 small lakes—a large karakir, a small karakir and an aquarium. The total area of the lake is 26.5 - 27.2 thousand hectares. As a result of the research carried out in Lake karakir, 16 families of high water plants, 34 species belonging to 24 categories were identified. The study was carried out mainly on a large spruce and an aquarium. Phragmites australis (Cav.) Trin. ex Steud. (Cav.) Trin. ex Steud. as the dominant species of high water plants, Typha angustifolia L., T. laxmannii Lepech., T. minima Funck. like species are most common.

Distribution of High Water Plants of Lake Karakir in Bukhara Region in Ecological Groups

In this article, information about the geographical location of the Karakir Lake in Bukhara region, high water plants, systematics and their distribution is presented. As a result of the research, Lake Karakir has 34 species of high water plants belonging to 16 families. These plants were divided into ecological groups and analyzed.

High Plant Species Distributed in and around Dengizkul, Bukhara Region

The article presents the results of research conducted in Dengizkul and around this area. It identifies plant species in and around the lake and analyzes species composition. As a result of the analysis, 70 species of tall plants belonging to 24 families were identified in the lake. The identified species are divided into aquatic and riparian plants. Of these, 18 species are found in lake water and 52 species in its vicinity. The low number of high plant species in the lake water is due to the salinity of the water. The protection of this area is based on the natural conservation of the surrounding plant population.

Ethnobotanics of Certain Medicinal Plants of Bukhara Region (Uzbekistan)

The article presents data on the ethnobotanical characteristics of 12 species of medicinal and food plants in the Bukhara region, where the climatic conditions are specific, hot and dry. These plants were used by the local population in ancient times and now as food and natural remedies. As a result of the study, data on the use of medicinal plants in food were collected on the basis of surveys of rural residents, housewives and elderly people of the city of Bukhara and the region. It is worth noting that due to the demand of the modern era, the study of the nutritional and therapeutic aspects of medicinal plants that grow naturally, their scientific and practical significance, determines the possibility of their use in folk medicine.

High Vegetation of Lake Ayakagitma in Bukhara Region and Their Distribution

More than 500 lakes are found in Uzbekistan. Ayakagitma Lake is located on the border of the Northern Gijduvon and Shafirkon districts of Bukhara region. This lake was formed in 1985-1986 at the expense of the waters of the sewage dump collector. The area of the lake is 8200 hectares, the maximum depth is 35 m, on average 10 - 15 m, the minimum is 3 - 5 meters. The chemical composition of lake water is chloride-sulfate and has a calcareous character. 67 species of high plants belonging to 22 families were found in this area. 17 of these species are found in the water of the lake and 50 species are found around it. Of the most common species, Phragmites communis reach a height of 4.5 - 5.5 meters. Phragmites communis make up the total area of the lake 8 - 10 hectares.

Some Comments on the Types of Series Cistanche Hoffmanns. &Link, Distributed in Bukhara Region (Uzbekistan)

The article provides information on the distribution and importance of the Cistanche family in the Bukhara region. Four species of the genus Cistanche mongolica Beck., Cistanche flava (C. A. Mey.) Korsh., Cistanche ambigua (Bunge) Beck., Cistanche salsa (C. A. Mey.) Beck. have been identified in this region. The species has been identified as host plants in different ecological environments and parasitic. Among the Cistanche species, C. salsa and C. flava are common in the study area. It has been noted in laboratory experiments that their medicinal properties are higher than those of other species.

The Initial Stages of the Ontogenesis of Some Medicinal Plants in the Conditions of Bukhara (Uzbekistan)

The article is devoted to the study of the growth and development of medicinal annual Cota altissima (L.) J. Gay and two-year-old Arctium tomentosum Mill., Silybum marianum (L.) Gaertn. belonging to the Asteraceae family in the soil and climatic conditions of the city of Bukhara. The germination of seeds in laboratory and field conditions was determined. Due to unfavorable weather conditions and late spring, the seeds were sown in May. The growth and development of plants was observed one month later. Despite these species, they continue to grow. Cota altissima formed buds and flowers, and Arctium tomentosum and Silybum marianum remained in the virginal age state. All species adapt to the unfavorable conditions of the city of Bukhara.

Types of Fish in Need of Protection in Fishing Reservoirs of Bukhara Region

Fishery reservoirs in Bukhara region are located in the lower reaches of the Zarafshan River and are one of the most important reservoirs in western Uzbekistan. Based on the research conducted in the natural and artificial fishery reservoirs of Bukhara region and the analysis of the literature on ichthyofauna of the region, it has been identified that 31 species of fish belonging to 6 genera and 12 families are found in the region. Of these 31 species, 23 species are listed in the Red Data Book of the International Union for Conservation of Nature (IUCN) and 5 species in the Red Data Book of the Republic of Uzbekistan.

On the Theory of Fractional Order Differential Games of Pursuit

This article is devoted to studying of the problem of prosecution described by differential equations of a fractional order. It has received sufficient conditions of a possibility of completion of prosecution for such operated systems.

Downstream Ichthyofauna of the Zarafshan River

The lower reaches of the Zarafshan River are one of the most important watersheds in western Uzbekistan. Based on the research conducted in the lower reaches of the Zarafshan River and the lower Zarafshan watersheds, as well as the analysis of the literature on ichthyofauna of the region, it was determined that currently there are 6 species and 31 species of fish belonging to 12 families.