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Location Tajikistan
Central coordinates 73o 46.33' East  37o 25.58' North
IBA criteria A1, A3, A4i
Area 160,972 ha
Altitude 4,000 - 5,460m
Year of IBA assessment 2006





Site description The IBA is situated 320 km from Horog. It is located between the southern Alichur and Vahan ridges at between 4,000 to 5,460 m above sea level and presents a wide valley near the border with Afghanistan. There is evidence of glacial cumulation in this valley. The landscape is typically Central Asian: mainly gentle slopes of alpine steppe with sparse vegetation. The main part of the IBA is Zorkul lake (also known as Victoria Lake) located at an altitude of 4,125 m above sea level. The area of the lake is about 3,900 hectares. It is freshwater. The maximum depth is 6 m. The lake’s surface is covered by vegetation. The list of submerged aquatic plants is 17 species. The lake has a potential fish production of about 46 tons per year. Many waterfowl breed on the islands of the lake, including Anser indicus. Land use in the reserve is prohibited. The buffer zone is partly used as pasture.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Tibetan Snowcock Tetraogallus tibetanus resident  2000-2006  25-50 breeding pairs  medium  A3  Least Concern 
Himalayan Snowcock Tetraogallus himalayensis resident  2000-2006  100-150 breeding pairs  medium  A3  Least Concern 
Bar-headed Goose Anser indicus breeding  2000-2006  60-125 breeding pairs  medium  A3  Least Concern 
Ruddy Shelduck Tadorna ferruginea passage  2000-2006  200-3,500 individuals  medium  A4i  Least Concern 
Saker Falcon Falco cherrug passage  2000-2006  4 individuals  medium  A1  Endangered 
Himalayan Vulture Gyps himalayensis resident  2000-2006  8-10 breeding pairs  medium  A3  Least Concern 
Lesser Sand Plover Charadrius mongolus breeding  2000-2006  40-60 breeding pairs  medium  A3  Least Concern 
Brown-headed Gull Larus brunnicephalus breeding  2000-2006  20-30 breeding pairs  medium  A3  Least Concern 
Yellow-billed Chough Pyrrhocorax graculus resident  2000-2006  15-18 breeding pairs  medium  A3  Least Concern 
Hume's Lark Calandrella acutirostris breeding  2000-2006  200-250 breeding pairs  medium  A3  Least Concern 
White-winged Redstart Phoenicurus erythrogastrus breeding  2000-2006  3-4 breeding pairs  medium  A3  Least Concern 
White-winged Snowfinch Montifringilla nivalis resident  2000-2006  20-30 breeding pairs  medium  A3  Least Concern 
Rufous-streaked Accentor Prunella himalayana breeding  2000-2006  2-3 breeding pairs  medium  A3  Least Concern 
Brown Accentor Prunella fulvescens breeding  2000-2006  10-12 breeding pairs  medium  A3  Least Concern 
Black-headed Mountain-finch Leucosticte brandti resident  2000-2006  750-1,000 breeding pairs  medium  A3  Least Concern 
Great Rosefinch Carpodacus rubicilla breeding  2000-2006  25-30 breeding pairs  medium  A3  Least Concern 
Red-fronted Rosefinch Carpodacus puniceus breeding  2000-2006  30-40 breeding pairs  medium  A3  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Zorkul National Nature Reserve 87,700 is identical to site 87,700  
Zorkul Lake Wetlands of International Importance (Ramsar) 3,800 protected area contained by site 3,800  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Grassland   23%
Desert   25%
Wetlands (inland)   25%
Rocky areas   27%

Land use

Land-use Extent (% of site)
nature conservation and research 100%
agriculture -

Other biodiversity Fish: two mountainous Asian species - Schizopygopsis stoliczkai and Schizothorax intermedius - inhabit the rivers and lakes of Zorkul. Amphibians and Reptiles are absent. Mammals: there is a high level of diversity and endemism. Rodents include Marmota caudata, Microtus juldaschi and Alticola argentatus. Leporidae include Lepus tolai and Ochonota [macrotis] roylei. The wide valleys and gentle slopes provide habitat for Ovis ammon polii. Capra sibirica inhabits the rocky slopes. Carnivora include Uncia uncia, Felis lynx, Felis manul, Canis lupus, Vulpes vulpes, Mustela nivalis, Mustela erminea and Ursus arctos. National Red Data book species include: Ovis ammon polii, Uncia uncia, Felis lynx and Ursus arctos. Vegetation: as in other parts of the Pamir vegetation has a desert character and is divided into 4 zones. Nival zone - small areas on the crests of the southern Alishur ridge above 4,800 m above sea level. Frost-resistant plants include: Melandrium apetalum, Cerastium cerastoides, Ajania tibetica, Oxitropis immersa and Sibbaldia tetrandra. Upper alpine and lower alpine zones are located between 4,200 and 4,800 m above sea level. The sub-shrub Ajania tibetica dominates in more dry sites. Oxitropis immersa, Oxitropis poncinsii and Smelovskia calycina prevail in wet places. Desert formations are typical in the lower alpine belt with the dominant species being Krascheninnikovia ceratoides, Artemisia skorniakowii, and Ajania tibetica. Almost the same type of vegetation occurs in the subalpine zone (Stanyukovich,1949). Permanent grasses form more than 80% of the list of Zorkul marsh vegetation. Dominants are Stipa orientalis, Alopecurus mucronatus, Trisetum spicatum, Poa calliopsis, Poa pamirica, Poa relaxa, Poa tremuloides, Poa litvinoviana, Puccinellia hackeliana, Puccinellia humilis and Puccinellia pamirica (Stanyukovich,1949).

Protection status The IBA is identical to Zorkul Nature Reserve.

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Zorkul Nature Reserve (Lake Victoria). Downloaded from http://www.birdlife.org on 25/04/2014

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