Data Zone
The site was identified as internationally important for bird conservation in 2010 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Smew Mergellus albellus | LC | passage (2002) | 1,000 birds | C2 |
| Goosander Mergus merganser | LC | passage (2002) | 12,000 birds | C3 |
| Great Cormorant Phalacrocorax carbo | LC | winter (2004–2009) | 8,000–14,300 birds | C3 |
| Eurasian Curlew Numenius arquata | NT | passage (2000–2009) | 96 birds | C1 |
| Aquatic Warbler Acrocephalus paludicola | VU | breeding (2009) | 11–12 males | C1 |
| A4iii Species group - waterbirds | n/a | winter (2002–2008) | 35,000 birds | C4 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2010. The most recent assessment (2010) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2010 | good | very high | very low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | medium | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Aquatic Warbler Acrocephalus paludicola | 11 / 11 (males) | 100 | good | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Invasive and other problematic species and genes | happening now | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | very high |
| Biological resource use | happening now | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | high |
| Agricultural expansion and intensification | happening now | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | high |
| Natural system modifications | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Pollution | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Residential and commercial development | happening now | few individuals/small area (<10%) | slow decline (1–10% over 3 generations) | low |
| Transportation and service corridors | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Some of area covered (10–49%) | Not assessed | Not assessed | very low |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| - | Delta of the Swina river | Baltic Sea Protected Area (Helcom) (UA) | 10 |
| - | Delta of the Swina river | Baltic Sea Protected Area (Helcom) (UA) | 89 |
| 1960 | Woliński Park Narodowy | Park Narodowy (II) | 22 |
| 1990 | Karsiborskie Paprocie | Rezerwat Przyrody (IV) | <1 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Forest | 27 | Native coniferous woodland; Alluvial and very wet forest |
| Grassland | 15 | Humid grasslands |
| Artificial/Terrestrial | 8 | Ruderal land; Arable land |
| Marine Coastal/Supratidal | major (>10) | |
| Marine Intertidal | - |
| Land use | % of IBA |
|---|---|
| agriculture | 30 |
| fisheries/aquaculture | 30 |
| tourism/recreation | 10 |
| not utilised | 10 |
| other | 10 |
| forestry | 5 |
| nature conservation and research | 5 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Delta of the Swina river (Poland). Downloaded from
https://datazone.birdlife.org/site/factsheet/delta-of-the-swina-river-iba-poland on 23/12/2024.