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The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Smew Mergellus albellus	LC	passage	2002	1,000 individuals	C2
Goosander Mergus merganser	LC	passage	2002	12,000 individuals	C3
Great Cormorant Phalacrocorax carbo	LC	winter	2004-2009	8,000-14,300 individuals	C3
Eurasian Curlew Numenius arquata	NT	passage	2000-2009	96 individuals	C1
Aquatic Warbler Acrocephalus paludicola	VU	breeding	2009	11-12 males	C1
A4iii Species group - waterbirds	n/a	winter	2002-2008	35,000 individuals	C4

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2010) may differ.

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.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Aquatic Warbler Acrocephalus paludicola	11	11	males	100	favourable

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 area/population (>90%)	moderate to rapid deterioration	very high
Biological resource use	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Agricultural expansion and intensification	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Natural system modifications	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Pollution	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Residential and commercial development	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Transportation and service corridors	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Some of site covered (10-49%)	Not assessed	Not assessed	negligible

Year	Protected Area	Designation	% overlap with IBA
-	Delta of the Swina river	Baltic Sea Protected Area (Helcom)	89
-	Delta of the Swina river	Baltic Sea Protected Area (Helcom)	10
1960	Woliński Park Narodowy	Park Narodowy	22
1990	Karsiborskie Paprocie	Rezerwat Przyrody	<1
2001	Wolin i Uznam	Site of Community Importance (Habitats Directive)	89
2001	Ujście Odry i Zalew Szczeciński	Site of Community Importance (Habitats Directive)	10
2004	Zalew Szczeciński	Special Protection Area (Birds Directive)	10
2005	Wolin i Uznam	Baltic Sea Protected Area (HELCOM)	89
2007	Delta Świny	Special Protection Area (Birds Directive)	87
2009	Ujscie Odry i Zalew Szczecinski	Baltic Sea Protected Area (HELCOM)	10

Habitat1	Habitat detail	% of IBA
Forest	Native coniferous woodland, Alluvial and very wet forest	27
Grassland	Humid grasslands	15
Artificial/Terrestrial	Ruderal land, Arable land	8
Marine Coastal/Supratidal		major (>10)
Marine Intertidal		-

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	30
fisheries/aquaculture	30
tourism/recreation	10
not utilised	10
other	10
forestry	5
nature conservation and research	5

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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 23/11/2024.