RU2004
Dvuob'ye


IBA Justification

The site was identified as important in 2006 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):
Species Current IUCN Red List Category Season Year(s) Population estimate at site IBA criteria met
Whooper Swan Cygnus cygnus LC breeding 2001 100-150 breeding pairs A3
Whooper Swan Cygnus cygnus LC passage 2001 800-2,000 individuals A4i
Tundra Swan Cygnus columbianus LC passage 2001 300-650 individuals A4i
Red-breasted Goose Branta ruficollis VU passage 1999 3,000-7,000 individuals A1, A4i
Bean Goose Anser fabalis LC passage 1989-2001 5,000-10,000 individuals A4i
Greater White-fronted Goose Anser albifrons LC passage 1989-2001 10,000-30,000 individuals A4i
Lesser White-fronted Goose Anser erythropus VU passage 2000 400-600 individuals A1, A4i
Common Scoter Melanitta nigra LC passage 2001 70,000-150,000 individuals A4i
Common Goldeneye Bucephala clangula LC breeding 2000 400-500 breeding pairs A3, A4i
Common Goldeneye Bucephala clangula LC passage 2000 2,000-3,000 individuals A4i
Smew Mergellus albellus LC breeding 2001 350-700 breeding pairs A3, A4i
Smew Mergellus albellus LC non-breeding 1989-2001 2,600-25,000 individuals A4i
Red-breasted Merganser Mergus serrator LC breeding 1966-2001 130-290 breeding pairs A4i
Common Pochard Aythya ferina VU breeding 2001 2,000-3,500 breeding pairs A4i
Common Pochard Aythya ferina VU passage 2001 10,000-20,000 individuals A4i
Tufted Duck Aythya fuligula LC breeding 2001 3,500-5,500 breeding pairs A4i
Tufted Duck Aythya fuligula LC passage 2001 45,000-70,000 individuals A4i
Greater Scaup Aythya marila LC passage 2001 35,000-60,000 individuals A4i
Garganey Spatula querquedula LC breeding 2001 2,000-4,000 breeding pairs A4i
Garganey Spatula querquedula LC passage 2001 6,000-12,000 individuals A4i
Northern Shoveler Spatula clypeata LC breeding 2001 2,500-3,500 breeding pairs A4i
Northern Shoveler Spatula clypeata LC passage 2001 10,000-15,000 individuals A4i
Eurasian Wigeon Mareca penelope LC breeding 2001 8,500-13,000 breeding pairs A3, A4i
Eurasian Wigeon Mareca penelope LC passage 2001 40,000-65,000 individuals A4i
Northern Pintail Anas acuta LC breeding 2001 13,000-20,000 breeding pairs A4i
Northern Pintail Anas acuta LC passage 2001 100,000-150,000 individuals A4i
Common Teal Anas crecca LC breeding 2001 3,000-4,500 breeding pairs A4i
Common Teal Anas crecca LC passage 2001 9,000-15,000 individuals A4i
Horned Grebe Podiceps auritus VU breeding 2001 1,000-3,000 breeding pairs A3, A4i
Eurasian Curlew Numenius arquata NT breeding 2000 350-600 breeding pairs A4i
Ruff Calidris pugnax LC passage 2001 10,000-15,000 individuals A4i
Temminck's Stint Calidris temminckii LC passage 2001 120,000-200,000 individuals A4i
Dunlin Calidris alpina LC passage 2001 20,000-40,000 individuals A4i
Little Stint Calidris minuta LC passage 2001 40,000-60,000 individuals A4i
Pin-tailed Snipe Gallinago stenura LC breeding 1989-2001 300-600 breeding pairs A4i
Common Snipe Gallinago gallinago LC breeding 2001 9,000-15,000 breeding pairs A4i
Red-necked Phalarope Phalaropus lobatus LC breeding 2001 7,000-8,000 breeding pairs A4i
Terek Sandpiper Xenus cinereus LC breeding 2001 1,000-2,000 breeding pairs A4i
Common Greenshank Tringa nebularia LC breeding 2001 350-500 breeding pairs A3
Little Gull Hydrocoloeus minutus LC breeding 2001 65,000-80,000 breeding pairs A4i
Black-headed Gull Larus ridibundus LC breeding 1989-2001 15,000-20,000 individuals A4i
Common Tern Sterna hirundo LC breeding 1989-2001 15,000-20,000 individuals A4i
Three-toed Woodpecker Picoides tridactylus LC breeding 1989-2001 present A3
Siberian Tit Poecile cinctus LC breeding 1989-2001 present A3
Arctic Warbler Phylloscopus borealis LC breeding 1989-2001 present A3
Brambling Fringilla montifringilla LC breeding 1989-2001 present A3
Pine Grosbeak Pinicola enucleator LC breeding 1989-2001 present A3
Yellow-breasted Bunting Emberiza aureola CR breeding 1963-2000 700-1,000 breeding pairs A1
Rustic Bunting Emberiza rustica VU breeding 1989-2001 present A3
A4iii Species group - waterbirds n/a breeding 1989-2001 1,500,000-4,000,000 individuals A4iii

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2006).


IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
Synsko-Vojkarskaya etnicheskaya territoriya Natural-ethnic Territory 1,424,934 protected area overlaps with site 0
Lower Dvuobje Ramsar Site, Wetland of International Importance 540,000 protected area overlaps with site 0
Kunovatsky Zakaznik (Federal) 220,000 protected area overlaps with site 73,000
Berezovskiy Zakaznik 43,320 protected area is adjacent to site 0

Habitats

Habitat (IUCN level 1) Habitat detail Extent (% of site)
Forest Mixed -
Shrubland -
Grassland Humid -
Wetlands (inland) Temporary water bodies, Standing fresh water, Rivers & streams -
Artificial/Terrestrial -
For more information about the IUCN Habitat classification, please click here.

Land use

Land-use Extent (% of site)
rangeland/pastureland -
forestry -
fisheries/aquaculture -
hunting -
urban/industrial/transport -
not utilised -
nature conservation and research -
other -


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Dvuob'ye. Downloaded from https://datazone.birdlife.org/site/factsheet/dvuobye-iba-russia-(central-asian) on 27/02/2024.