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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
Corncrake Crex crex	LC	breeding	1999	540-700 males	C1, C6
Spotted Crake Porzana porzana	LC	breeding	1996-1999	50 males	C6
White Stork Ciconia ciconia	LC	breeding	1996-1999	240-260 breeding pairs	C6
Little Tern Sternula albifrons	LC	breeding	1999	62-70 breeding pairs	C6
Black Tern Chlidonias niger	LC	breeding	1998-1999	360-380 breeding pairs	C2, C6
Western Marsh-harrier Circus aeruginosus	LC	breeding	1996-1999	71-85 breeding pairs	C6
Montagu's Harrier Circus pygargus	LC	breeding	1999	23-30 breeding pairs	C6
Common Kingfisher Alcedo atthis	LC	breeding	1999	82 breeding pairs	C6

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 (2009) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Natural system modifications	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Human intrusions and disturbance	happening now	majority/most of area/population (50-90%)	very rapid to severe deterioration	very high
Invasive and other problematic species and genes	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Pollution	happening now	whole area/population (>90%)	moderate to rapid deterioration	very high
Residential and commercial development	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Transportation and service corridors	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Biological resource use	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
No known threats	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
Whole area of site (>90%) covered by appropriate conservation designation	A management plan exists but it is out of date or not comprehensive	Very little or no conservation action taking place	low

Year	Protected Area	Designation	% overlap with IBA
1964	Przekop	Rezerwat Przyrody	<1
1972	L/êg Dêbowy	Nature Reserve	<1
1973	Łęg Dębowy koło Janowa Podlaskiego	Rezerwat Przyrody	<1
1978	Dębniak	Rezerwat Przyrody	<1
1979	Kaliniak	Rezerwat Przyrody	<1
1982	Dolina Bugu i Nurca	Obszar Chronionego Krajobrazu	1
1986	Dolina Bugu	Obszar Chronionego Krajobrazu	13
1986	Nadbużański Obszar Chronionego Krajobrazu	Obszar Chronionego Krajobrazu	5
1987	Wydma Mołożewska	Rezerwat Przyrody	<1
1987	Skarpa Mołożewska	Rezerwat Przyrody	<1
1987	Skarpa Moóo_ewska	Nature Reserve	<1
1987	Wydma Moóo_ewska	Nature Reserve	<1
1990	Nadbuÿañski Obszar Chronionego Krajobrazu	Protected Landscape Area	24
1993	Nadbużański Park Krajobrazowy	Park Krajobrazowy	45
1994	Park Krajobrazowy Podlaski Przełom Bugu	Park Krajobrazowy	14
1994	Podlaski Przóom Bugu	Landscape Park	20
1995	Szwajcaria Podlaska	Rezerwat Przyrody	<1
1996	Bojarski Grąd	Rezerwat Przyrody	<1
2000	Kózki	Rezerwat Przyrody	<1
2001	Ostoja Nadbużańska	Site of Community Importance (Habitats Directive)	58
2002	Mokry Jegiel	Rezerwat Przyrody	<1
2008	Dolina Dolnego Bugu	Special Protection Area (Birds Directive)	100

Habitat1	Habitat detail	% of IBA
Grassland	Humid grasslands, Mesophile grasslands	60
Artificial/Terrestrial		20
Forest	Alluvial and very wet forest	10
Wetlands (inland)	Standing freshwater, Rivers and streams, Water fringe vegetation, Fens, transition mires and springs	7
Other		3

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	-
hunting	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lower Bug river valley (Poland). Downloaded from https://datazone.birdlife.org/site/factsheet/lower-bug-river-valley-iba-poland on 23/11/2024.