Data Zone
Year of most recent IBA criteria assessment: 2007
Populations of IBA trigger species| Species | Current IUCN Red List Category | Season | Year(s) of estimate | Population estimate | IBA Criteria Triggered |
|---|---|---|---|---|---|
| Whooper Swan Cygnus cygnus | LC | passage | 2005 | 195-1,011 individuals | A4i |
| Red-breasted Goose Branta ruficollis | VU | passage | 2005 | 732-1,662 individuals | A1, A4i |
| Greylag Goose Anser anser | LC | passage | 2007 | 2,560-6,430 individuals | A4i |
| Greater White-fronted Goose Anser albifrons | LC | passage | 2005 | 2,400-8,050 individuals | A4i |
| Lesser White-fronted Goose Anser erythropus | VU | passage | 2005 | < 50 individuals | A1 |
| Common Goldeneye Bucephala clangula | LC | passage | 2005 | 1,270-2,820 individuals | A4i |
| A4iii Species group - waterbirds | n/a | passage | 2007 | 13,200-27,600 individuals | A4iii |
Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.
For more information about the IBA assessment process and criteria please click here
| Most recent IBA monitoring assessment | |||
|---|---|---|---|
| Year of assessment | Threat score (pressure) | Condition score (state) | Action score (response) |
| 2015 | high | very unfavourable | not assessed |
| Was the whole site covered? | Yes | State assessed by | Population |
| Accuracy of information | medium | ||
| Threats to the site (pressure) | |||||
|---|---|---|---|---|---|
| Threat Level 1 | Threat Level 2 | Timing | Scope | Severity | Result |
| Agricultural expansion and intensification | annual & perennial non-timber crops - small-holder farming | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
| Agricultural expansion and intensification | livestock farming and ranching (includes forest grazing) - small-holder grazing, ranching or farming | happening now | some of area/population (10-49%) | moderate to rapid deterioration | high |
| Biological resource use | fishing & harvesting aquatic resources - unintentional effects: large scale | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
| Biological resource use | hunting & collecting terrestrial animals - intentional use (species being assessed is the target) | happening now | some of area/population (10-49%) | moderate to rapid deterioration | high |
| Climate change and severe weather | drought | happening now | small area/few individuals (<10%) | no or imperceptible deterioration | low |
| Human intrusions and disturbance | recreational activities | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
| Pollution | agricultural & forestry effluents - type unknown/unrecorded | happening now | majority/most of area/population (50-90%) | slow but significant deterioration | high |
| Pollution | domestic & urban waste water - type unknown/unrecorded | happening now | some of area/population (10-49%) | no or imperceptible deterioration | low |
| Pollution | excess energy - noise pollution | happening now | some of area/population (10-49%) | no or imperceptible deterioration | low |
| Pollution | garbage & solid waste | happening now | some of area/population (10-49%) | no or imperceptible deterioration | low |
| Residential and commercial development | housing and urban areas | happening now | some of area/population (10-49%) | no or imperceptible deterioration | low |
| Transportation and service corridors | roads and railroads | happening now | small area/few individuals (<10%) | no or imperceptible deterioration | low |
| Condition of habitat (state) | ||||||
|---|---|---|---|---|---|---|
| Habitat | Habitat Detail | Reference Area (ha) | Actual Area (ha) | % of habitat remaining | % of carrying capacity (overall) | Result |
| Artificial/Terrestrial | Other urban & industrial areas | 0 | 0 | poor (40-69%) | poor (40-69%) | very unfavourable |
| Artificial/Terrestrial | Ruderal land | 0 | 0 | poor (40-69%) | poor (40-69%) | very unfavourable |
| Forest | Wooded steppe | 50 | 50 | - | poor (40-69%) | unfavourable |
| Grassland | Humid | 200 | 200 | - | very poor (< 40%) | very unfavourable |
| Grassland | Steppes & dry calcareous | 300 | 200 | - | poor (40-69%) | very unfavourable |
| Wetlands (inland) | Standing fresh water | 400 | 300 | - | moderate (70-90%) | unfavourable |
| Condition of key/trigger populations (state) | ||||||
|---|---|---|---|---|---|---|
| Scientific | Common | TargetPop | ActualPop | Units | Remaining | Result |
| Cygnus cygnus | Whooper Swan | 1010 | 3 | individuals | 1 | very unfavourable |
| Bucephala clangula | Common Goldeneye | 2820 | 650 | individuals | 24 | very unfavourable |
| Aythya fuligula | Tufted Duck | 1900 | 112 | individuals | 6 | very unfavourable |
| Spatula querquedula | Garganey | 78 | 78 | individuals | 100 | favourable |
| Mareca strepera | Gadwall | 2430 | 41 | individuals | 2 | very unfavourable |
| Species group - waterbirds | A4iii | 27600 | 1135 | individuals | 5 | very unfavourable |
| Conservation actions taken at site (response) | |||
|---|---|---|---|
| Conservation Designation | Management Planning | Conservation Action | Result |
| Not assessed | Not assessed | Not assessed | not assessed |
| IUCN Habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Forest | Wooded steppe | - |
| Grassland | Humid, Steppes & dry calcareous | - |
| Wetlands (inland) | Standing fresh water | - |
| Artificial/Terrestrial | Arable land, Other urban & industrial areas, Ruderal land | - |
| Land-use | Extent (% of site) |
|---|---|
| agriculture | - |
| rangeland/pastureland | - |
| fisheries/aquaculture | - |
| hunting | - |
| urban/industrial/transport | - |
Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Sorbalyk-Maybalyk Lake System. Downloaded from
http://www.birdlife.org on 16/08/2022.
