Taxonomic and Functional Diversity of the Alatau Ichthyofauna: A Comprehensive Study for the Conservation of Freshwater Ecosystems in Kazakhstan

The southeastern region of Kazakhstan, encompassing the Alatau mountain systems, is distinguished by its rich natural resources, particularly the diversity of freshwater ecosystems. Rivers and lakes in this region create unique habitats that support a wide variety of fish species. However, in recent decades, increasing anthropogenic pressure and climate change have posed significant threats to the stability of these ecosystems and the preservation of biodiversity. In this context, a comprehensive study of the ichthyofauna of the Alatau has become a matter of both scientific and practical importance.

From 2025 to 2027, a large-scale research project is being implemented to address these pressing issues. The project aims to determine the current taxonomic composition of fish species and to investigate their functional characteristics in relation to environmental conditions. The research is being conducted with the participation of scientists from Al-Farabi Kazakh National University (KazNU), one of the leading academic institutions in Kazakhstan, which underscores the high scientific level and relevance of the project.

The central idea of the project is based on a comparative analysis of fish populations and communities across different water bodies, taking into account environmental conditions. This approach makes it possible not only to identify species composition but also to assess the functional roles of different species within ecosystems. As a result, key indicators reflecting the influence of habitat conditions on biodiversity, abundance, and ecosystem services of fish will be established.

The Alatau region is located at the intersection of several ichthyogeographical zones, which contributes to the presence of numerous unique and endemic species. However, the taxonomic status of many of these species remains insufficiently studied. This significantly complicates the development of effective biodiversity conservation measures. Within the framework of the project, modern molecular genetic methods will be applied to clarify the systematic status of species and to identify new or previously undescribed forms.

Field studies will be conducted in rivers and lakes of the Zhetysu, Ile (Trans-Ili), Kungey, and Talas Alatau. During expeditions, researchers will collect fish samples, water samples, aquatic organisms, and bottom sediments. These materials will be subjected to detailed laboratory analysis. In particular, the physical and chemical properties of water and sediments will be examined, along with the composition of zooplankton and macrozoobenthos and their role in ecosystem functioning.

Morphological and biological analyses of fish will provide insights into their adaptive features under varying environmental conditions. Genetic studies will help reveal both intra- and interspecific variability and will contribute to understanding evolutionary processes. One of the key scientific objectives of the project is to test the hypothesis of rapid speciation in isolated water bodies within the temperate zone.

The practical significance of the project lies in the comprehensive assessment of freshwater ecosystems and fish populations. The results will allow for the evaluation of biological productivity, identification of major threats, and development of scientifically grounded recommendations for the rational use and conservation of aquatic biological resources. This will help prevent economic losses associated with ecosystem degradation.

Special attention is given to the study of ex situ conservation of native fish species. This direction is particularly important for the development of aquaculture. The use of local species is environmentally sustainable and reduces dependence on imported products. Moreover, artificial reproduction can serve as an effective tool for restoring natural populations.

In the context of the global freshwater crisis and ongoing ecosystem degradation, the importance of such research is steadily increasing. Pollution, hydrological alterations, overfishing, and the introduction of alien species negatively affect ecosystem resilience. Against this backdrop, the Alatau research project makes a significant contribution to biodiversity conservation in Kazakhstan and to the advancement of ecological science.

An equally important component of the project is the training of young researchers. The involvement of doctoral and master’s students provides them with the opportunity to acquire modern scientific skills and practical experience. This ensures continuity in scientific knowledge and supports the development of national research capacity.

Overall, the study of the taxonomic and functional diversity of the Alatau ichthyofauna represents an important step toward preserving natural heritage, ensuring sustainable management of biological resources, and strengthening the scientific potential of Kazakhstan.