UDC 581.93 (470.67); 581.522.5

Saribaeva Sh.U., Allamuratov A., Mavlyanov B., Mamatkosimov O.  ASSESSMENT OF THE STATUS OF THE COENOPOPULATION OF ALLIUM PRAEMIXTUM IN VVED. IN THE RANGES OF UZBEKISTAN // Arid Ecosystems. 2023. Vol. 29. № 4 (97). P. 56-62. | PDF

The article presents the results of studying the state of the cenopopulation of a rare species – Allium praemixtum in the Nurata and Turkestan ranges. The ontogenetic structure of the coenopopulation was studied by the generally accepted method (Uranov, 1975; Coenopopulations…, 1976). Coenopopulations were characterized according to the classifications of A.A. Uranov and O.V. Smirnova (1969) and «delta-omega» (Zhivotovsky, 2001). The ecological density was determined according to W. Odum (1986). Geobotanical descriptions were made according to the standard method on plots of 100 m2 (Field geobotany, 1964). The characteristic ontogenetic spectrum is left-sided and with an absolute maximum in one of the pregenerative groups (Cheremushkina, 2004). Coenopopulations 1, 5, 6 correspond to the typical left-sided ontogenetic spectrum with a maximum peak in the virginal state of the species. The centered onogenetic spectrum does not coincide with the characteristic spectrum, culminating in the middle-aged state. The bimodal onogenetic spectrum should be considered as a temporary variant of the left-sided one with an equal peak in the medium generative and virginal states. The density of individuals in the studied coenopopulations varied from 1.1 to 9.7 ind./m2, and the ecological density was 2.3-17.63 ind./m2. According to the “delta-omega” classification, coenopopulations of Allium praemixtum CP 1 are maturing, CP 5 and 6 are young, CP 2.4 are transitional, CP are mature. The existing coenopopulations are mainly located outside the territory of the Nurata Reserve, except for coenopopulation 3 (near Mazhrumsay) and CP 4 (near Gurdarasay). The only solution to this problem can be the strict protection of coenopopulations.

Keywords: biodiversity, Allium praemixtum, phytocenosis, ontogenetic structure, coenopopulation, plant protection.

Funding. The work was carried out within the framework of the project of the state scientific and technical program of the Republic of Uzbekistan «Assessment of the current state of populations and creation of a living collection of economically valuable species of wild relatives of cultivated plants of the flora of Uzbekistan».

DOI: 10.24412/1993-3916-2023-4-56-62

EDN: MRCMAM