Journal of Advanced Zoology ISSN: 0253-7214 Volume 44 Issue S-5 Year 2023 Page 1925:1933 ________________________________________________________________________________________________________ - 1925 - Analysis of The Dynamics of The Number of Mammalian Populations in The Conditions of The Southern Aral Sea Mambetullaeva Svetlana Mirzamuratovna 1 , Utemuratova Gulshirin Najimatdinovna 2 , Yeshchanova Sayyora Shukurulla qizi 3 , Kudaybergenova Ulbike Kalibekovna 4 , Bekmuratov Baxtiyar Mirzabaevich 5 , Abdinasirova Nargiza Abdrasulievna 6 1 Doctor of Biological Sciences, ProfessorDirector of the Karakalpak Scientific Rese arch Institute of Natural Sciences of the Republic of Uzbekistan, Nukus 2 PhD Head of the Laboratory of Ecology of the Animal World, Karakalpak Scientific Research Institute of Natural Sciences of the Republic of Uzbekistan, Nukus 3 PhD Doctor of Philosophy in Biological Sciences, Karakalpak Institute of Agriculture and Agrotechnologies 4 Head of the Department of Zoology, human morphophysiology and methodology of its training at the Nukus State Pedagogical Institute named after Ajiniyaz. 5 Independent researcher of the Karakalpak Scientific Research Institute of Natural Sciences of the Republic of Uzbekistan, Nukus 6 Intern-researcher of the Karakalpak Scientific Research Institute of Natural Sciencesof the Republic of Uzbekistan, Nukus *Corresponding author’s: Mambetullaeva Svetlana Mirzamuratovna Article History Received: 06 June 2023 Revised: 05 Sept 2023 Accepted: 06 Nov 2023 CC License CC-BY-NC-SA 4.0 Abstract The article presents the results of research analysis of the dynamics of the number of mammalian populations in the conditions of the Southern Aral Sea Small mammals serve as bio indicators in the study of environmental conditions. Bio topic distribution, nutrition, age and sex structures were studied on the example of Microtus Ileus populations. The long-term joint dynamics of the populations of the most typical predator-prey system for this region in the conditions of the Southern Aral Sea region is investigated. It is shown that the specifics of the dynamics of natural processes in the conditions of the crisis of the Aral Sea region require the development of special simulation models taking into account the control parameters and order parameters of the destabilized ecosystem. Keywords: Aral Sea Region, Population Dynamics, Bioindicator, Predator- Prey Model, Approximation, Coherence, Ecosystems 1. Introduction Currently, the ecological changes taking place on the planet and characterized as ecologically crisis processes have brought to the fore the problems of destabilization and dynamics of natural processes (Shilov et al., 2000). The identification of patterns of crisis processes and their forecasting is of great scientific and practical importance for making decisions at the state level to contain them and prevent their consequences. For the Republic of Uzbekistan, one of the first places in a number of important problems of crisis processes is the drying up of the Aral Sea. The Aral ecological crisis, being a complex of complex natural processes, has a specific type of dynamics, different from natural, evolutionary successions. First of all, this is a significant nonlinearity and high speed of processes. As numerous studies of the authors have shown, in just a few decades the sea area has decreased by 83%, the grandiose reed beds that occupied more than 600 thousand hectares in the Amu Darya Delta have decreased by almost 10 times by 2004 (Bakhiev et al., 2012), 60 species of wild animals and plants have disappeared, the number of species under threat has increased. threatened with extinction (12 species of mammals, 26 species of birds and 11 species of plants) (http://aral.mptf.uz/site/aralsea.html). Accordingly, structural and functional connections are dynamic in various communities of the ecosystem of the Southern Aral Sea region, where, by the way, The consequences of the Aral crisis are maximally manifested (Zaripov et al., 2015).