BG050
Durankulak Lake


IBA Criteria

Year of most recent IBA criteria assessment: 2005

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
White-headed Duck Oxyura leucocephala EN winter 2003 16 individuals A1, C1
Red-breasted Goose Branta ruficollis VU winter 1997 3,020-39,233 individuals A1, A4i, B1i, C1, C2
Greylag Goose Anser anser LC winter 2004 311 individuals B1i, C3
Greater White-fronted Goose Anser albifrons LC winter 1997 5,657-73,531 individuals A4i, B1i, C3
Lesser White-fronted Goose Anser erythropus VU winter 1998 15-50 individuals A1, C1
Ferruginous Duck Aythya nyroca NT winter 2001 67 individuals A1, C1
Little Crake Zapornia parva LC breeding 1998 5-7 breeding pairs C6
Common Little Bittern Ixobrychus minutus LC breeding 1996 14-17 breeding pairs C6
Purple Heron Ardea purpurea LC breeding 1998 4-6 breeding pairs C6
Dalmatian Pelican Pelecanus crispus NT winter 2002 200 individuals A1, A4i, B1i, C1, C2
Pygmy Cormorant Microcarbo pygmaeus LC passage 1996 47-228 individuals A1, A4i, B1i, C1, C2
Pygmy Cormorant Microcarbo pygmaeus LC winter - 4-356 individuals A1, A4i, B1i, C1, C2
Kentish Plover Charadrius alexandrinus LC breeding 1996 8-17 breeding pairs B2, C6
Collared Pratincole Glareola pratincola LC breeding 1996 2-14 breeding pairs C6
Mew Gull Larus canus LC winter 2001 330 individuals B1i, C3
Little Tern Sternula albifrons LC breeding 1998 5-8 breeding pairs C6
Western Marsh-harrier Circus aeruginosus LC resident 1996 4 breeding pairs C6
Red-footed Falcon Falco vespertinus NT breeding 1998 5 breeding pairs B2, C6
A4iii Species group - waterbirds n/a winter 1997 50,000-99,999 individuals A4iii, C4

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)
2013 high very unfavourable medium
Was the whole site covered? Yes State assessed by Population
Accuracy of information good

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Agricultural expansion and intensification annual & perennial non-timber crops - shifting agriculture likely in short term (within 4 years) some of area/population (10-49%) moderate to rapid deterioration medium
Biological resource use hunting & collecting terrestrial animals - intentional use (species being assessed is the target) likely in long term (beyond 4 years) some of area/population (10-49%) moderate to rapid deterioration medium
Biological resource use hunting & collecting terrestrial animals - unintentional effects (species is not the target) happening now some of area/population (10-49%) slow but significant deterioration medium
Biological resource use hunting & collecting terrestrial animals - unintentional effects (species is not the target) likely in short term (within 4 years) some of area/population (10-49%) very rapid to severe deterioration high
Climate change and severe weather drought likely in long term (beyond 4 years) some of area/population (10-49%) slow but significant deterioration medium
Energy production and mining oil and gas drilling likely in short term (within 4 years) small area/few individuals (<10%) no or imperceptible deterioration low
Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) moderate to rapid deterioration high
Human intrusions and disturbance work and other activities happening now some of area/population (10-49%) moderate to rapid deterioration high
Natural system modifications dams & water management/use - abstraction of surface water (agricultural use) happening now majority/most of area/population (50-90%) slow but significant deterioration high
Residential and commercial development commercial and industrial development likely in short term (within 4 years) majority/most of area/population (50-90%) very rapid to severe deterioration high
Residential and commercial development housing and urban areas likely in short term (within 4 years) some of area/population (10-49%) moderate to rapid deterioration medium
Residential and commercial development tourism and recreation areas likely in short term (within 4 years) some of area/population (10-49%) slow but significant deterioration medium

Condition of habitat (state)
Habitat Habitat Detail Reference Area (ha) Actual Area (ha) % of habitat remaining % of carrying capacity (overall) Result
Wetlands (inland) 0 0 poor (40-69%) poor (40-69%) very unfavourable

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Branta ruficollis Red-breasted Goose 39233 16000 individuals 41 unfavourable
Anser anser Greylag Goose 2202 300 individuals 14 very unfavourable
Anser albifrons Greater White-fronted Goose 104837 60000 individuals 58 unfavourable
Anser erythropus Lesser White-fronted Goose 50 10 individuals 20 very unfavourable
Aythya nyroca Ferruginous Duck 20 10 breeding pairs 50 unfavourable
Charadrius alexandrinus 22 5 breeding pairs 23 very unfavourable
Glareola pratincola Collared Pratincole 14 0 breeding pairs 0 very unfavourable
Sternula albifrons Little Tern 8 3 breeding pairs 38 very unfavourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Whole area of site (>90%) covered by appropriate conservation designation A management plan exists but it is out of date or not comprehensive Some limited conservation initiatives are in place medium
For more information about IBA monitoring please click here

IBA Protection

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Ezero Durankulak Site of Community Importance (Habitats Directive) 5,051 protected area overlaps with site 2,143
Ezero Durankulak Zashtitena Mestnost 447 protected area contained by site 0
Durankulashko ezero Special Protection Area (Birds Directive) 3,356 is identical to site 3,356
Durankulak Lake Ramsar Site, Wetland of International Importance 350 protected area overlaps with site 350
Durankulak Lake National Monument 350 protected area contained by site 350
Balchik State Game Husbandries 133,500 protected area overlaps with site 0

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Shrubland Scrub -
Grassland Steppes and dry calcareous grassland, Humid grasslands, Mesophile grasslands -
Wetlands (inland) Standing brackish and salt water, Water fringe vegetation -
Artificial/Terrestrial Arable land, Perennial crops, orchards and groves -
Coastline Sand dunes & beaches -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
hunting -
nature conservation and research -
water management -
For further information about the land use classification please click here.


Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Durankulak Lake. Downloaded from http://www.birdlife.org on 24/01/2021.