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The site was identified as important in 2011 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
White-headed Duck Oxyura leucocephala	EN	breeding	2007	1 breeding pairs	A1
Greylag Goose Anser anser	LC	passage	2007-2008	500-15,000 individuals	A4i
Greater White-fronted Goose Anser albifrons	LC	passage	1990-2005	2,000-6,000 individuals	A4i
Lesser White-fronted Goose Anser erythropus	VU	passage	1990-2005	10-70 individuals	A1
Great Crested Grebe Podiceps cristatus	LC	non-breeding	2007-2009	250-500 individuals	A4i
Common Crane Grus grus	LC	passage	1990-2005	500-2,000 individuals	A4i
Dalmatian Pelican Pelecanus crispus	NT	passage	2007-2008	130-310 individuals	A1, A4i
Dalmatian Pelican Pelecanus crispus	NT	breeding	2005-2009	100 breeding pairs	A1, A4i
A4iii Species group - waterbirds	n/a	passage	1990-2010	50,000-60,000 individuals	A4iii

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2011) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2011. The most recent assessment (2010) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Biological resource use	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Natural system modifications	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Transportation and service corridors	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Residential and commercial development	happening now	small area/few individuals (<10%)	moderate to rapid deterioration	low
Agricultural expansion and intensification	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Climate change and severe weather	likely in short term (within 4 years)	small area/few individuals (<10%)	slow but significant deterioration	low
Pollution	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Human intrusions and disturbance	happening now	small area/few individuals (<10%)	slow but significant 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
-	Yuzhnyi	Zakaznik	42
-	Name Unknown, site No. 115e (Novosibirsk)	Not reported	13

Habitat1	Habitat detail	% of IBA
Wetlands (inland)	Fens, transition mires & springs, Standing brackish & salt water, Water-fringe vegetation	73
Grassland	Steppes & dry calcareous	11
Artificial/Terrestrial	Arable land, Forestry plantations, Other urban & industrial areas	10
Unknown		5
Forest		1

1. IUCN Habitat classification.

Land use	% of IBA
nature conservation and research	50
fisheries/aquaculture	40
hunting	40
rangeland/pastureland	10
agriculture	9
not utilised	6
tourism/recreation	5
unknown	5
forestry	1
urban/industrial/transport	1

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Holes of the Karasuk river downstream (Russia (Central Asian)). Downloaded from https://datazone.birdlife.org/site/factsheet/holes-of-the-karasuk-river-downstream-iba-russia-(central-asian) on 27/11/2024.