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• Reference and further resources

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	300-350 males	C1, C6
Black-tailed Godwit Limosa limosa	NT	passage	2004-2009	30 individuals	C1
Black Tern Chlidonias niger	LC	breeding	2004-2009	50-80 breeding pairs	C6
Montagu's Harrier Circus pygargus	LC	breeding	1995-2003	30 breeding pairs	C6
Common Kingfisher Alcedo atthis	LC	breeding	1995-2003	110-140 breeding pairs	C6
Syrian Woodpecker Dendrocopos syriacus	LC	breeding	1996-2009	40-100 breeding pairs	C6
Aquatic Warbler Acrocephalus paludicola	VU	breeding	2009	48 males	C1, 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 (2010) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Black Tern Chlidonias niger	80	57	breeding pairs	72	near favourable

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Grassland	moderate (70-90%)	moderate (70-90%)	unfavourable

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
Energy production and mining	happening now	whole area/population (>90%)	moderate to rapid deterioration	very high
Transportation and service corridors	happening now	whole area/population (>90%)	moderate to rapid deterioration	very high
Natural system modifications	likely in short term (within 4 years)	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Biological resource use	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Residential and commercial development	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
Human intrusions and disturbance	likely in short term (within 4 years)	majority/most of area/population (50-90%)	no or imperceptible deterioration	low
Climate change and severe weather	happening now	majority/most of area/population (50-90%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation	% overlap with IBA
1983	Poleski Obszar Chronionego Krajobrazu	Obszar Chronionego Krajobrazu	15
1983	Strzelecki Park Krajobrazowy	Park Krajobrazowy	5
1983	Grabowiecko-Strzelecki Obszar Chronionego Krajobrazu	Obszar Chronionego Krajobrazu	3
1988	Małoziemce	Rezerwat Przyrody	<1
1990	Nadbużański Obszar Chronionego Krajobrazu	Obszar Chronionego Krajobrazu	25
1996	Dołhobyczowski Obszar Chronionego Krajobrazu	Obszar Chronionego Krajobrazu	1
1997	Nadbużański Obszar Chronionego Krajobrazu	Obszar Chronionego Krajobrazu	10
2002	Poleska Dolina Bugu	Site of Community Importance (Habitats Directive)	27
2002	Zachodniowołyńska Dolina Bugu	Site of Community Importance (Habitats Directive)	5
2004	Dolina Środkowego Bugu	Special Protection Area (Birds Directive)	85

Habitat1	Habitat detail	% of IBA
Grassland	Steppes and dry calcareous grassland, Humid grasslands, Mesophile grasslands	51
Artificial/Terrestrial	Highly improved re-seeded landscapes, Arable land, Other urban and industrial areas, Ruderal land	34
Forest	Broadleaved deciduous woodland, Native coniferous woodland, Mixed woodland, Alluvial and very wet forest	10
Other		3
Wetlands (inland)	Standing freshwater, Rivers and streams, Water fringe vegetation, Fens, transition mires and springs	2

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	75
nature conservation and research	30
forestry	5
urban/industrial/transport	5
not utilised	5
hunting	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Middle Bug river valley (Poland). Downloaded from https://datazone.birdlife.org/site/factsheet/middle-bug-river-valley-iba-poland on 22/11/2024.