Home – Home – Jornals – Contemporary Problems of Ecology 2026 number 4

For the first time data of the study on the number and distribution of birds in the Upper Vychegda basin, which were conducted in June 2019, are presented. During the boat routes, the bed of the Upper River (from the Voldino Village to the Myel′dino Village) with a length of 140 km, and its tributaries (the Timshor and Mylva rivers) were studied. During the stops, pedestrian routes were conducted in various biotopes. The characteristics of the population density and abundance of birds in various habitats of the surveyed area are given. According to the results of the work, 123 bird species belonging to 11 orders were noted in the upper course of the Vychegda River. The following density and species abundance of bird population were recorded in the surveyed biotopes: floodplain meadows - 302 individuals per 1 km² (52 bird species), floodplain spruce-birch forest - 202 (39), swamps with pine forests - 66 (15), pine burnt-out areas - 29 (6), pine forest - 136 (18), Vychegda River floodplain - 54 (52), Timshor River floodplain 265 (14). Among the leaders most often noted are: Chaffinch, Common Sandpiper, Sand Martin and Tree Pipit. A high Shannon index was noted in the ecosystems of floodplain meadows and riverbed spruce-birch forests and the Vychegda River channel. The dominance index increases in ecological communities of moss-shrub swamps and pine burnt-out areas.