|Central coordinates||65o 23.82' East 39o 36.63' North|
|IBA criteria||A1, A3, A4i, A4iii|
|Altitude||284 - 469m|
|Year of IBA assessment||2006|
Ornithological information The avifauna consists of 90 species, including 51 nesting species. A large number of species use this area for resting and feeding during migration. The most diverse are waterbirds, with 38 species noted - 11 species are Anseriformes; 13 shorebirds; 4 gulls and terns; 4 Rallidae; 5 Ciconiiformes and 2 species of crane. Five species are included in the IUCN Red Data Book: Falco cherrug, Falco naumanni, Aegypius monachus, Circus macrourus and Chlamydotis undulata. In addition Aquila chrysaetos, Hieraaetus pennatatus, Circaetus gallicus and Pterocles alchata are included in the Red Data Book of Uzbekistan. It is important to emphasize the key role of this site for the protection of Chlamydotis undulata. The number in Karnabchul reaches several dozen during the nesting period.
Site description The IBA is situated 30 km south of the city of Navoi. Karnabchul is a foothill plain of the Zeravshan ridge, which stretches southwards from Zirabulak and Ziadin mountains. A mountain stream arising in the Zirabulak Mountains crosses the area; the latter is cut with shallow scours, rivulets, and drying beds of temporary streams abounding with small pebbles and crushed stone. There are also salt-marsh depressions and takyrs deprived of any vegetation, and a huge salt marsh named Shorsai. The soil surface mainly consists of loamy-sand and loamy small crushed-stone desert sierozem and gray-brown gypsum soils showing varying levels of salinity.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Lesser White-fronted Goose Anser erythropus||winter||2003-2006||4-142 individuals||good||A1, A4i||Vulnerable|
|Greylag Goose Anser anser||passage||2006||27,848 individuals||medium||A4i||Least Concern|
|Ruddy Shelduck Tadorna ferruginea||passage||2006||1,495 individuals||medium||A4i||Least Concern|
|Mallard Anas platyrhynchos||passage||2006||16,419 individuals||medium||A4i||Least Concern|
|Common Teal Anas crecca||passage||2006||19,166 individuals||medium||A4i||Least Concern|
|Great Cormorant Phalacrocorax carbo||passage||2006||1,530 individuals||medium||A4i||Least Concern|
|Saker Falcon Falco cherrug||winter||1967-1980||1-5 individuals||medium||A1||Endangered|
|Cinereous Vulture Aegypius monachus||non-breeding||2003-2005||1-6 individuals||medium||A1||Near Threatened|
|Houbara Bustard Chlamydotis undulata||breeding||1985-1989||1-60 adults only||medium||A1, A3||Vulnerable|
|Egyptian Nightjar Caprimulgus aegyptius||breeding||2000-2005||1-2 individuals||medium||A3||Least Concern|
|Brown-necked Raven Corvus ruficollis||resident||1990-2006||common [units unknown]||-||A3||Least Concern|
|Great Tit Parus major||resident||2000-2006||common [units unknown]||-||A3||Least Concern|
|Desert Lark Ammomanes deserti||breeding||2000-2005||5-30 individuals||medium||A3||Least Concern|
|Sykes's Warbler Hippolais rama||breeding||2000-2005||common [units unknown]||-||A3||Least Concern|
|Desert Warbler Sylvia nana||breeding||2000-2006||uncommon [units unknown]||-||A3||Least Concern|
|Desert Finch Rhodopechys obsoletus||resident||1980-2006||uncommon [units unknown]||-||A3||Least Concern|
|Red-headed Bunting Emberiza bruniceps||breeding||1990-2006||common [units unknown]||-||A3||Least Concern|
|A4iii Species group - waterbirds||passage||2006||20,000-72,950 individuals||medium||A4iii|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Karnabchul||Wildlife Refuge||40,000||protected area contained by site||40,000|
|Mubarekskiy||Wildlife Refuge||219,534||protected area overlaps with site||18,000|
|Nurabad||Wildlife Refuge||40,000||protected area overlaps with site||20,000|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Artificial landscapes (terrestrial)||9%|
|Land-use||Extent (% of site)|
|nature conservation and research||25%|
Other biodiversity Twenty-seven mammals inhabit the area. The main species are rodents - Citellus fulvus, Spermophilopsis leptodactylus, Allactaga sewertzovi, Allactaga elater, Dipus sagitta, Rattus turkestanikus, Mus musculus, Rhambomys opimus, Meriones lenducus, Ellobius talpinus, Cricetulus migratorius. Also recorded are: Lepus tolai, Vulpes corsac, Felis libyea, Vormela peregusna, Crocidura suaveoleus, Erinaceus auritus and Pipistrellus pipistrellus. Reptiles: Teratoscincus scincus, Gemnodactillus bedtschenkoi, Agama sanguinolenta, Phrynocephalus helioscopus, Phrynocephalus interscapularis, Varanus griseus, Eremias lineolata, Eremias grammica, Eryx tataricus, Taphrometopon lineolatum, Coliber karelini, Coluber tyria, Naja oxiana, and Testudo horsfieldi. Two species are included in the IUCN Red List (Varanus griseus and Testudo horsfieldi). Amphibians are represented by two species: Bufo viridis and Rana ridibunda. The vegetation cover is mainly comprised of wormwood and ephemeral formations. The dominant species are Aretmisia diffusa, Carex pachystylis and Poa bulbosa.
Management considerations In the 1950s intensive artificial planting of saxaul was carried out under a government scheme. As a result in the 1980s a significant part of Karnabchul has been taken over by saxaul forest. In recent years illegal collection of fire wood by local people has destroyed all saxaul forest. Since the early 1990s, the condition of the site has been declining due to uncontrolled grazing which affects the distribution and number of birds. For the last 15 years there has been commercial collecting of Testugo horsfieldi. Also commercial hunting of Houbara bustard by foreigners is organized.
Protection status A state reserve (zakaznik) was set up in 1985 with the purpose of preserving Chlamidotis undulata. During the breeding period of this species, it is advisable to prohibit grazing by cattle to protect the nesting population. It is also desirable to strengthen the level of protection of this species during its seasonal migrations.
Conservation response No in-depth faunistic study of the area including the IBA has ever been conducted. However, the following studies have been carried out - climate and its effect on the plant kingdom (Balashova et al, 1963); soils (Genusova, Gorbunova and Kimbert, 1960; Lobova, 1960; Rozanova, 1951); soil humidity (Amelin, Bakhrenkov, 1940; Chalbash, 1958, 1960; Shamsutdinov, 1973); and vegetation (Amelin, 1941; Gaevskaya, Krasnopolin, 1957; Gaevskaya, 1970). Vertebrates animals were studied in the 1970s (Salikhbaev et al., 1967). There are unpublished data on mammals collected by workers from the Tashkent anti-plague station. E.N. Mukhina collected birds in the 1980s (1989).
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Karnabchul Steppe. Downloaded from http://www.birdlife.org on 22/05/2013
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