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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
Whooper Swan Cygnus cygnus	LC	winter	2005-2008	1,000-3,000 individuals	C2
Greylag Goose Anser anser	LC	passage	1995-2003	5,000 individuals	C3
Bean Goose Anser fabalis	LC	passage	2005-2008	17,000-90,000 individuals	C3
Greater White-fronted Goose Anser albifrons	LC	winter	1995-2003	25,000 individuals	C3
Greater White-fronted Goose Anser albifrons	LC	passage	2005-2008	10,000-45,000 individuals	C3
Corncrake Crex crex	LC	breeding	2005-2008	50-350 males	C1, C6
Spotted Crake Porzana porzana	LC	breeding	2005-2008	2-43 males	C6
Eurasian Coot Fulica atra	LC	passage	1995-2003	19,300 individuals	C3
Common Crane Grus grus	LC	passage	2005-2008	400-5,200 individuals	C2
Great White Egret Ardea alba	LC	passage	2008-2009	500 individuals	C2
Eurasian Curlew Numenius arquata	NT	breeding	2005-2009	10-12 breeding pairs	C1
Black-tailed Godwit Limosa limosa	NT	breeding	2005-2009	10-16 breeding pairs	C1
Whiskered Tern Chlidonias hybrida	LC	breeding	2005-2008	30-160 breeding pairs	C6
Black Tern Chlidonias niger	LC	breeding	2005-2008	50-80 breeding pairs	C6
Common Tern Sterna hirundo	LC	breeding	2005-2008	36-200 breeding pairs	C6
Aquatic Warbler Acrocephalus paludicola	VU	breeding	2005-2008	4-8 males	C1
A4iii Species group - waterbirds	n/a	passage	2005-2009	130,000-150,000 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 (2013) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Natural system modifications	happening now	majority/most of area/population (50-90%)	very rapid to severe deterioration	very high
Agricultural expansion and intensification	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Invasive and other problematic species and genes	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Climate change and severe weather	happening now	majority/most of area/population (50-90%)	slow but significant deterioration	high

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Most of site (50-90%) covered (including the most critical parts for important bird species)	A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	Some limited conservation initiatives are in place	medium

Year	Protected Area	Designation	% overlap with IBA
1970	Lemierzyce	Rezerwat Przyrody	<1
1973	Pamięcin	Rezerwat Przyrody	<1
1977	Slonsk	Nature Reserve	13
1984	Warta River Mouth National Park (Park Narodowy “Ujscie Warty”)	Ramsar Site, Wetland of International Importance	13
1997	Park Krajobrazowy Ujście Warty	Park Krajobrazowy	13
2001	Ujście Warty	Site of Community Importance (Habitats Directive)	98
2001	Park Narodowy Ujście Warty	Park Narodowy	24
2003	Gorzowsko-Krzeszycka Dolina Warty	Obszar Chronionego Krajobrazu	18
2004	Ujście Warty	Special Protection Area (Birds Directive)	100
2005	Dolina Postomii	Rezerwat Przyrody	<1

Habitat1	Habitat detail	% of IBA
Grassland	Humid grasslands	50
Forest	Alluvial and very wet forest	4
Wetlands (inland)		3

1. IUCN Habitat classification.

Land use	% of IBA
water management	100
agriculture	10

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Warta River Mouth (Poland). Downloaded from https://datazone.birdlife.org/site/factsheet/warta-river-mouth-iba-poland on 22/11/2024.