TROPHIC RELATIONSHIP BETWEEN POPULATIONS OF INSECTS AND BIRDS OF THE RIVER UYUK (Tyva Republic)
This paper discusses the interaction of the animal population of aquatic and terrestrial parts of the basin complexes of ecosystems of water flows, using the mountain-taiga river Uyuk, a tributary of the Bolshoi Yenisei, located on the southern macro slope of the Western Sayan. As a result of the studies, the species diversity and features of the distribution of the predominant groups of amphibious insects and birds of the wetland complex were revealed depending on the natural conditions of different parts of the river, and the amount of food resources presented along the river continuum. In total, 52 taxa of aquatic invertebrates were found in the Uyuk River basin, where 26 species of mayflies (Ephemeroptera), 24 species of stoneflies (Plecoptera), 17 species of caddis flies (Trichoptera), and 6 species of dragonflies (Odonata). Diptera species are represented by 6 families. Birds, related to amphibians, are represented by 47 species from 11 families. A small number of species of both was noted in the upper reaches and the mouth part, and the maximum biodiversity in the middle rithral zone. A clear correlation was revealed between the natural conditions of different zones of the river continuum, the number of species and the abundance of invertebrates, near-aquatic and waterfowl: low species diversity and population in the crenal and hyporythral and maximum biodiversity and abundance in the metarithral part of the river channel.