Data Zone
Country/territory: Poland
IBA Criteria met: C3, C4, C6 (2010)
For more information about IBA criteria please click here
Area: 2,738 ha
| Most recent IBA monitoring assessment | |||
|---|---|---|---|
| Year of assessment | Threat score (pressure) | Condition score (state) | Action score (response) |
| 2010 | very high | favourable | low |
| For more information about IBA monitoring please click here | |||
Site description
A storage reservoir (777 ha) on the Samica river, connected by the Wonieœæ channel to the Obra river. The reservoir comprises five former lakes (Drzeczkowskie, Witos³awskie, Wojnowskie, Jezierzyckie, Wonieœæ), connected by a narrow channel (c.13 km long, 200-1,300 m wide), with meadows between them. A dam and sluice divide the upper part of the reservoir, where aquatic vegetation is well-developed, from the lower, where such vegetation is very localized. Adjacent there are fish-ponds, forests, meadows and cultivated fields. The reservoir stores water for agriculture and fire-fighting.
Key biodiversity
The globally threatened Aythya nyroca has not bred here since 1995, but the habitat remains and it is believed there is a good chance that it could breed here again, therefore criterion B2 is still applied. Breeding species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (one pair). Other notable breeding species include Anas strepera (22 pairs) and Chlidonias niger (20-60 pairs).
Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Woniesc reservoir. Downloaded from
http://www.birdlife.org on 05/02/2023.
