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Location Kazakhstan, Akmola region
Central coordinates 70o 17.00' East  50o 21.00' North
IBA criteria A1, A4i, A4iii
Area 8,582 ha
Altitude 328 - 334m
Year of IBA assessment 2005

Association for the Conservation of Biodiversity of Kazakhstan (Affiliate)

Site description The site consists of a dual system of waterbodies situated 95 km south-west of Astana and approximately 45 km to the south of Korgalzhyn village. It represents the terminal fragment of the distinct group of lakes running south-west in a long chain parallel to the course of the Nura river and about 30 km distant from it. The salty lakes form part of the eastern periphery of the major Tengiz lake system. Karasor and Tuzaschy lakes are the first lakes in the long chain of waterbodyies running north-east from the area lying to the south of Tengiz lake. The landscape of the whole area is a very gently rolling plain with herbage-grass associations corresponding to areas intermediate between proper steppe and semi-desert. The lakes have a high salinity and only feeble reed growth. A considerable portion of the depressions containing the lakes contain salt-marshes or alkaline plots.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Northern Pintail Anas acuta passage  2002-2005  3,500-15,000 individuals  good  A4i  Least Concern 
Ruddy Shelduck Tadorna ferruginea passage  2005  1,500 individuals  medium  A4i  Least Concern 
Common Shelduck Tadorna tadorna passage  2005  545-835 individuals  good  A4i  Least Concern 
Eurasian Wigeon Mareca penelope passage  2002-2005  2,500-20,000 individuals  good  A4i  Least Concern 
Mallard Anas platyrhynchos passage  2002-2005  12,000-22,000 individuals  good  A4i  Least Concern 
Northern Shoveler Spatula clypeata passage  2002-2005  6,000-50,000 individuals  good  A4i  Least Concern 
Common Goldeneye Bucephala clangula passage  2005  300 individuals  good  A4i  Least Concern 
Black-tailed Godwit Limosa limosa passage  2000-2008  257-1,430 individuals  medium  A1, A4i  Near Threatened 
Ruff Calidris pugnax passage  2000  39,500 individuals  good  A4i  Least Concern 
Red-necked Phalarope Phalaropus lobatus passage  2000  43,600 individuals  good  A4i  Least Concern 
A4iii Species group - waterbirds passage  2000-2005  35,000-104,000 individuals  medium  A4iii   


IUCN habitat Habitat detail Extent (% of site)
Shrubland Low bushes  minor
Grassland Steppes & dry calcareous  15%
Desert Desert & semi-desert - clay  5%
Wetlands (inland) Standing brackish & salt water  80%

Land use

Land-use Extent (% of site)
rangeland/pastureland 15%
hunting 20%

Other biodiversity Due to the high salinity of the lakes reed growth is patchy and thin. On the outskirts of the lake system, as well as in the immediate proximity of the shores, a few plots of steppic landscape remain, severely deteriorated in most places by intensive grazing, but still featuring the remnants of rich-herbage-motley-turf-grass associations.

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Tuzashchy and Karasor Lakes. Downloaded from on 28/08/2014

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