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closeSiverga lake
| Location | Russia (Central Asian), Tyumen region |
| Central coordinates | 68o 46.00' East 55o 25.00' North |
| IBA criteria | A1, A4i, A4iii |
| Area | 7,500 ha |
| Altitude | 120 - 130m |
| Year of IBA assessment | 2006 |
Ornithological information Important area for nesting Circus macrourus and Anas acuta.
Populations of IBA trigger species
| Species | Season | Period | Population estimate | Quality of estimate | IBA Criteria | IUCN Category |
|---|---|---|---|---|---|---|
| Greater White-fronted Goose Anser albifrons | passage | 2000 | 10,000-25,000 individuals | medium | A4i | Least Concern |
| Red-breasted Goose Branta ruficollis | passage | 2000 | 250 individuals | good | A1 | Endangered |
| Pallid Harrier Circus macrourus | breeding | 2000 | 10-15 breeding pairs | medium | A1 | Near Threatened |
| Pied Avocet Recurvirostra avosetta | breeding | 2000 | 125-150 breeding pairs | medium | A4i | Least Concern |
| Little Gull Larus minutus | passage | 2000 | 1,500-2,000 individuals | good | A4i | Least Concern |
| A4iii Species group - waterbirds | - | - | present [units unknown] | - | A4iii |
Protected areas
| Protected area | Designation | Area (ha) | Relationship with IBA | Overlap with IBA (ha) | |
|---|---|---|---|---|---|
| Ozera Tobolo-Ishimskoy lesostepi | International Park | 0 | protected area contains site | 0 |
Habitats
| IUCN habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Grassland | Steppes and dry calcareous grassland | 15% |
| Wetlands (inland) | Mud flats and sand flats; Standing brackish and salt water | 80% |
| Artificial landscapes (terrestrial) | Arable land | 5% |
Land use
| Land-use | Extent (% of site) |
|---|---|
| agriculture | 15% |
| rangeland/pastureland | 25% |
| hunting | 100% |
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 Morozov V.V.
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Siverga lake. Downloaded from http://www.birdlife.org on 21/05/2013
To provide new information to update this factsheet or to correct any errors, please email BirdLife
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