The site is part of the waterlogged Berezina river floodplain between Berezinski Biosphere Reserve and the town of Borisov. The floodplain on the site is 45 km long and 0.5-2 km wide. The site is located downstream of Berezinski Biosphere Reserve, where there is little human activity. This explains why the hydrological regime of the site is almost natural. It is characterized by high-level short floods in spring and low water levels in summer.
The site is important for several breeding waterbird species, including globally threatened species, such as Greater Spotted Eagle Aquila clanga and Corncrake Crex crex. 13 breeding species from the National Red Data Book have been recorded. The site is an important concentration ground for geese, ducks, and waders on migration.
Non-bird biodiversity: The flora and fauna of the IBA has been poorly studied. The site is known to be important for mammal species such as Otter Lutra lutra, Beaver Castor fiber, Foumart Mustela putorius, and Water Vole Arvicola terrestris.
BirdLife International (2020) Important Bird Areas factsheet: Beresina. Downloaded from http://www.birdlife.org on 18/09/2020.