The Spatial Distribution of Black Flies (Diptera: Simuliidae) in the Basin of the Sema Mountain River in the North Altai Mountain Region

摘要

The distribution of preimaginal phases of black flies in the basin of the mountain river Sema (North Altai) is analyzed based on quantitative data. The studies were carried out at the altitudes of 300-2500 above sea level. The structural elements of the black fly community in the altitudinal belts were distinguished. The distribution of black flies on the landscape and ecological profiles is discussed. The sequence of changes in the black fly community along the river is considered. An assessment of the importance of the environmental factors determining the unevenness of the black fly population in the Sema River basin is given.