|Location||Russia (Central Asian), Novosibirsk region|
|Central coordinates||77o 36.65' East 53o 32.58' North|
|IBA criteria||A1, A4i, A4iii|
|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.)
|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)|
|Grassland||Steppes & dry calcareous||11%|
|Wetlands (inland)||Fens, transition mires & springs; Standing brackish & salt water; Water-fringe vegetation||73%|
|Artificial - terrestrial||Arable land; Forestry plantations; Other urban & industrial areas||10%|
|Land-use||Extent (% of site)|
|nature conservation and research||50%|
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 (2015) Important Bird and Biodiversity Area factsheet: Holes of the Karasuk river downstream. Downloaded from http://www.birdlife.org on 01/12/2015
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