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Location Russia (Central Asian), Novosibirsk region
Central coordinates 77o 36.65' East  53o 32.58' North
IBA criteria A1, A4i, A4iii
Area 25,470 ha
Altitude 0
Year of IBA assessment 2011

Site description The site is located south-east of Studjenoe Karasukskiy rayon of Novosibirsk region. The hole represents a vast system of fresh and bracken lakes alternating with major water-meadows, steppe and saline areas. Bird counts were performed in June-August of 2007-2009 and partially in August of 2010. When investigating the wetlands, there was realized the absolute account of the majority of birds without extrapolation to the territory. The information of the number of birds in 1990-2000 during autumn flight was received from the inspector Gusev of the preserve “Yuzhnay”. Our own observations allow to consider this data reliable. The further investigations are required as the nesting of the whole number of rare species is possible in this region. Also the investigation of the whole IBA territory is needed, as the achievement of the threshold values of the criterion A4.1 is quite possible here for some birds (Phalacrocorax carbo, Ardea cinerea etc.).

Key Biodiversity The following semi-aquatic birds were noticed on nesting and movements in June-August: Black-necked Grebe, Red-necked Grebe, Great Bittern, Great Egret, Whooper Swan, Mute Swan, Mallard, Gadwall, Garganey, Eurasian Wigeon, Common Teal, Northern Shoveler, Northern Pintail, Common Pochard, Tufted Duck, Red-crested Pochard, Common Shelduck, Common Coot, Little Ringed Plover, Red-necked Phalarope, Northern Lapwing, Redshank, Marsh Sandpi-per, Wood Sandpiper, Little Stint, Temminck’s Stint, Curlew Sandpiper, Dunlin, Ruff, Curlew, Black-tailed Godwit, Black-winged Stilt, Pied Avocet, Common Snipe, White-winged Tern, Black Tern, Little Tern, Caspian Tern, Com-mon Tern, Larus barabensis, Mew Gull, Pallas's Gull, Black-headed Gull, Little Gull, Bearded Parrotbill etc.

Non-bird biodiversity: The majority of wetlands are rich in fish (Crucian Carp, Perch, Wild Common Carp etc.)

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Lesser White-fronted Goose Anser erythropus passage  1990-2005  10-70 individuals  poor  A1  Vulnerable 
Greater White-fronted Goose Anser albifrons passage  1990-2005  2,000-6,000 individuals  poor  A4i  Least Concern 
Greylag Goose Anser anser passage  2007-2008  500-15,000 individuals  medium  A4i  Least Concern 
White-headed Duck Oxyura leucocephala breeding  2007  1 breeding pairs  unknown  A1  Endangered 
Great Crested Grebe Podiceps cristatus non-breeding  2007-2009  250-500 individuals  poor  A4i  Least Concern 
Dalmatian Pelican Pelecanus crispus passage  2007-2008  130-310 individuals  good  A1, A4i  Vulnerable 
Dalmatian Pelican Pelecanus crispus breeding  2005-2009  100 breeding pairs  good  A1, A4i  Vulnerable 
Common Crane Grus grus passage  1990-2005  500-2,000 individuals  poor  A4i  Least Concern 
A4iii Species group - waterbirds passage  1990-2010  50,000-60,000 individuals  poor  A4iii   


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

Land use

Land-use Extent (% of site)
agriculture 9%
rangeland/pastureland 10%
forestry 1%
fisheries/aquaculture 40%
hunting 40%
tourism/recreation 5%
urban/industrial/transport 1%
nature conservation and research 50%
Notes: >50
unknown 5%
not utilised 6%



Acknowledgements The identification of IBAs and information collected between 1980 and 2009 provided by the IBA network of the Russian Bird Conservation Union (RBCU).

References Bazdyrev A.V., Murzakhanov E.B.

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Holes of the Karasuk river downstream. Downloaded from on 27/10/2016

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