Data Zone
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') at the site:| Species | Red List1 | Season | Year(s) | Size | IBA criteria |
|---|---|---|---|---|---|
| Red-breasted Goose Branta ruficollis | VU | passage | 2000 | 250 individuals | A1 |
| Greater White-fronted Goose Anser albifrons | LC | passage | 2000 | 10,000-25,000 individuals | A4i |
| Pied Avocet Recurvirostra avosetta | LC | breeding | 2000 | 125-150 breeding pairs | A4i |
| Little Gull Hydrocoloeus minutus | LC | passage | 2000 | 1,500-2,000 individuals | A4i |
| Pallid Harrier Circus macrourus | NT | breeding | 2000 | 10-15 breeding pairs | A1 |
| A4iii Species group - waterbirds | n/a | passage | 2000 | 12,650-29,350 individuals | A4iii |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2006) may differ.
| Year | Protected Area | Designation | % overlap with IBA |
|---|---|---|---|
| - | Ozera Tobolo-Ishimskoy lesostepi | International Park | 100 |
| 1994 | Tobol-Ishim Forest-steppe | Ramsar Site, Wetland of International Importance | 100 |
| Habitat1 | Habitat detail | % of IBA |
|---|---|---|
| Wetlands (inland) | Standing brackish & salt water, Temporary water bodies | 80 |
| Grassland | Steppes & dry calcareous | 15 |
| Artificial/Terrestrial | Arable land | 5 |
| Land use | % of IBA |
|---|---|
| hunting | 100 |
| rangeland/pastureland | 25 |
| agriculture | 15 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Siverga lake (Russia (Central Asian)). Downloaded from
https://datazone.birdlife.org/site/factsheet/siverga-lake-iba-russia-(central-asian) on 23/11/2024.