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The site was identified as important in 2007 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	2005-2007	2-4 individuals	A1
Common Goldeneye Bucephala clangula	LC	passage	2005-2007	500-700 individuals	A4i
Smew Mergellus albellus	LC	passage	2005-2007	100-300 individuals	A4i
Goosander Mergus merganser	LC	passage	2005-2007	100-300 individuals	A4i
Red-breasted Merganser Mergus serrator	LC	passage	2005-2007	10-100 individuals	A4i
Ruddy Shelduck Tadorna ferruginea	LC	passage	2007	200-500 individuals	A4i
Ferruginous Duck Aythya nyroca	NT	breeding	2005-2007	100-140 individuals	A1
Gadwall Mareca strepera	LC	passage	2005-2007	5,000-7,000 individuals	A4i
Black-necked Grebe Podiceps nigricollis	LC	breeding	2005-2007	200-250 individuals	A4i
Demoiselle Crane Anthropoides virgo	LC	breeding	2005-2007	6-14 individuals	A3
Little Bustard Tetrax tetrax	NT	breeding	2005-2007	25-50 individuals	A1, A3
Great Bustard Otis tarda	EN	passage	2005-2007	15-30 individuals	A1, A3
Dalmatian Pelican Pelecanus crispus	NT	breeding	2005-2007	120-160 individuals	A1, A4i
Great White Pelican Pelecanus onocrotalus	LC	passage	2005-2007	50-500 individuals	A4i
Great Cormorant Phalacrocorax carbo	LC	breeding	2005-2007	800-1,000 individuals	A4i
A4iii Species group - waterbirds	n/a	passage	2005-2007	24,600-38,300 individuals	A4iii

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2007) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2007. The most recent assessment (2014) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Desert	good (> 90%)	moderate (70-90%)	near favourable
Grassland	good (> 90%)	good (> 90%)	favourable
Forest	good (> 90%)	good (> 90%)	favourable
Shrubland	good (> 90%)	good (> 90%)	favourable
Wetlands (inland)	good (> 90%)	good (> 90%)	favourable
Artificial/Terrestrial	good (> 90%)	good (> 90%)	favourable

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%)	slow but significant deterioration	medium
Natural system modifications	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Agricultural expansion and intensification	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Climate change and severe weather	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Human intrusions and disturbance	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
Most of site (50-90%) covered (including the most critical parts for important bird species)	A management plan exists but it is out of date or not comprehensive	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	medium

Year	Protected Area	Designation	% overlap with IBA
1998	Alakolsky	State Nature Reserve	36

Habitat1	Habitat detail	% of IBA
Wetlands (inland)	Fens, transition mires & springs, Rivers & streams, Standing fresh water, Temporary water bodies, Water-fringe vegetation	70
Desert	Desert & semi-desert - salty, Desert & semi-desert - clay	20
Grassland	Humid	5
Shrubland	Scrub	5
Artificial/Terrestrial	Arable land, Highly improved reseeded grasslands	minor (<10)
Forest	Flood-plain	minor (<10)

1. IUCN Habitat classification.

Land use	% of IBA
nature conservation and research	80
rangeland/pastureland	20
fisheries/aquaculture	20
tourism/recreation	10
forestry	minor (<10)

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Tentek River Delta (Kazakhstan). Downloaded from https://datazone.birdlife.org/site/factsheet/tentek-river-delta-iba-kazakhstan on 22/11/2024.