Data Zone
Country/territory: Poland
IBA criteria met: C2, C3, C4, C6 (2010)
For more information about IBA criteria, please click here
Area: 33,632 hectares (336.32 km2)
| IBA conservation status | |||
|---|---|---|---|
| Year of assessment (most recent) | State (condition) | Pressure (threat) | Response (action) |
| 2019 | not assessed | very high | not assessed |
| For more information about IBA monitoring, please click here | |||
Site description (2000 baseline)
The site comprises the Polish part of this large, shallow coastal lagoon (up to 5 m deep) of brackish water, which is cut off from the Baltic Sea by the Wiœla spit. A narrow channel in the Russian part of the lagoon, through which sea water flows during heavy storms, joins the water-body with the Baltic Sea (Gulf of Gdañsk). There is some river flow to the Polish part of the lagoon from the west, comprising a few branches of the Wis³a (Vistula) river deriving from the uplands. The water-level fluctuates significantly on a daily basis (by up to 1.5 m) because of wind effects. There are extensive reedbeds (Phragmites) along the shore, forming one or two belts up to 100 m wide, as well as rich floating and submerged vegetation (Nymphaea, Potamogeton) which supports a very rich invertebrate and fish fauna. Land-uses include intensive reed-harvesting (`Other').
Key biodiversity
The site regularly supports 20,000 or more waterbirds, mainly wildfowl Anser/Anas. Breeding species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (at least one pair), Crex crex (4-10 pairs). The most important parts of the site for birds in general are Elbl¹g Bay and the Pas³êka mouth. Non-breeding birds occur mainly in the coastal zone, from Przebrno village to the Pas³êka mouth.
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Vistula Lagoon (Poland). Downloaded from
https://datazone.birdlife.org/site/factsheet/vistula-lagoon-iba-poland on 22/12/2024.