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Location Poland, zachodnio-pomorskie
Central coordinates 14o 20.00' East  53o 50.00' North
IBA criteria C1, C2, C3, C4
Area 8,893 ha
Altitude 0 - 10m
Year of IBA assessment 2010

Ogólnopolskie Towarzystwo Ochrony Ptaków



Site description A delta (growing in the direction of Szczeciñski lagoon) which contains natural and artificial channels of the Œwina river, with numerous islands. The site also covers the south-west coast of Wolin island and the south-east part of Uznam island adjoining the Piastowski channel. The plant community is very rich. Most of the forest is old-growth (130-150 years), dominated by alder Alnus, mixed birch/oak Betula/Quercus and beech/oak Fagus/Quercus. Open areas are dominated by saltmarsh, rush Scirpus and reedbeds Phragmites. The latter completely cover some islets and almost all shores of the other islands. A very small area is used as arable land.

Key Biodiversity A very attractive area for breeding, migrating and wintering birds with very rich food sources available. Breeding species of global conservation concern that do not meet IBA criteria: Crex crex (two pairs). A total of 140 bird species have been recorded breeding.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Smew Mergellus albellus passage  2002  1,000 individuals  good  C2  Least Concern 
Goosander Mergus merganser passage  2002  12,000 individuals  good  C3  Least Concern 
Great Cormorant Phalacrocorax carbo winter  2004-2009  8,000-14,300 individuals  good  C3  Least Concern 
Eurasian Curlew Numenius arquata passage  2000-2009  96 individuals  good  C1  Near Threatened 
Aquatic Warbler Acrocephalus paludicola breeding  2009  11-12 males only  good  C1  Vulnerable 
A4iii Species group - waterbirds winter  2002-2008  35,000 individuals  good  C4   

IBA Monitoring

2010 very high favourable negligible
Population
Medium - based upon reliable but incomplete / partially representative data

Agricultural expansion and intensification annual & perennial non-timber crops - small-holder farming happening now some of area/population (10-49%) moderate to rapid deterioration high
Invasive and other problematic species and genes invasive non-native/alien species/diseases - unspecified species happening now whole area/population (>90%) moderate to rapid deterioration very high
Invasive and other problematic species and genes problematic native species/diseases - unspecified species happening now whole area/population (>90%) moderate to rapid deterioration very high
Natural system modifications fire & fire suppression - increase in fire frequency/intensity happening now some of area/population (10-49%) slow but significant deterioration medium
Over-exploitation, persecution and control of species gathering terrestrial plants - unintentional effects (species being assessed is not the target) happening now some of area/population (10-49%) moderate to rapid deterioration high
Over-exploitation, persecution and control of species hunting & collecting terrestrial animals - intentional use (species being assessed is the target) happening now whole area/population (>90%) moderate to rapid deterioration very high
Pollution garbage & solid waste happening now some of area/population (10-49%) slow but significant deterioration medium
Residential and commercial development housing and urban areas happening now small area/few individuals (<10%) slow but significant deterioration low
Transportation and service corridors utility & service lines happening now small area/few individuals (<10%) no or imperceptible deterioration low

Acrocephalus paludicola Aquatic Warbler 11 11 males only 100 favourable

Some of site covered (10-49%)  Not assessed  Not assessed  negligible 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Delta of the Swina river Baltic Sea Protected Area (Helcom) 52,467 protected area overlaps with site 899  
Delta of the Swina river Baltic Sea Protected Area (Helcom) 30,703 protected area overlaps with site 7,940  
Delta Swiny - PLB320002 Birds Directive 11,008 protected area overlaps with site 7,766  
Ujscie Odry i Zalew Szczecinski - PLH320018 Habitats Directive 52,612 protected area overlaps with site 899  
Wolin i Uznam - PLH320019 Habitats Directive 30,792 protected area overlaps with site 7,941  
Wolinski PN National Park 10,937 protected area overlaps with site 2,000  
Zalew Szczecinski - PLB320009 Birds Directive 47,195 protected area overlaps with site 899  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest; Native coniferous woodland  27%
Grassland Humid grasslands  15%
Wetlands (inland) Rivers and streams; Standing freshwater; Water fringe vegetation  -
Artificial - terrestrial Ruderal land  6%
Other   2%
Coastline Salt marshes  -

Land use

Land-use Extent (% of site)
agriculture 30%
fisheries/aquaculture 30%
forestry 5%
nature conservation and research 5%
tourism/recreation 10%
not utilised 10%
other 10%

Protection status National Partial International None2,000 ha of IBA covered by National Park (Woliñski, 10,937 ha).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Delta of the Swina river. Downloaded from http://www.birdlife.org on 19/12/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife