KZ025
Sorbalyk-Maybalyk Lake System


IBA Criteria

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


IBA Monitoring

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%) very unfavourable
Grassland Humid 200 200 - very poor (< 40%) not assessed
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
For more information about IBA monitoring please click here

Habitats

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 -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
rangeland/pastureland -
fisheries/aquaculture -
hunting -
urban/industrial/transport -
For further information about the land use classification please click here.


Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Sorbalyk-Maybalyk Lake System. Downloaded from http://www.birdlife.org on 22/09/2020.