BG036
Atanasovsko 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
Mute Swan Cygnus olor LC winter 1997 34-875 individuals B1i, C3
Red-breasted Goose Branta ruficollis VU winter 2003 1,444 individuals A1, A4i, B1i, C1, C2
Greater White-fronted Goose Anser albifrons LC winter 2000 16,010 individuals A4i, B1i, C3
Common Shelduck Tadorna tadorna LC winter 1997 1,102-4,036 individuals A4i, B1i, C3
Ferruginous Duck Aythya nyroca NT passage 1996 2-88 individuals A1, C1
Eurasian Spoonbill Platalea leucorodia LC passage 1996 15-130 individuals B1i, C2
Glossy Ibis Plegadis falcinellus LC passage 1996 70-260 individuals C2
Common Little Bittern Ixobrychus minutus LC breeding 1996 25-30 breeding pairs C6
Dalmatian Pelican Pelecanus crispus NT winter 2004 287 individuals A1, A4i, B1i, C1, C2
Dalmatian Pelican Pelecanus crispus NT passage 1996 158-1,695 individuals A1, A4i, B1i, C1, C2
Pygmy Cormorant Microcarbo pygmaeus LC winter 2002 250 individuals A1, A4i, B1i, C1, C2
Pygmy Cormorant Microcarbo pygmaeus LC passage 1996 14-565 individuals A1, A4i, B1i, C1, C2
Pied Avocet Recurvirostra avosetta LC breeding 1996 557-725 breeding pairs A4i, B1i, B3, C2, C6
Pied Avocet Recurvirostra avosetta LC passage 1997 1,134-7,570 individuals A4i, B1i, C2
Black-winged Stilt Himantopus himantopus LC breeding 1996 31-71 breeding pairs C6
Kentish Plover Charadrius alexandrinus LC breeding 1996 70-80 breeding pairs B2, C6
Slender-billed Curlew Numenius tenuirostris CR non-breeding 1996 1 individuals A1, C1
Slender-billed Curlew Numenius tenuirostris CR passage 1996 1-3 individuals A1, C1
Collared Pratincole Glareola pratincola LC breeding 1997 15-20 breeding pairs C6
Collared Pratincole Glareola pratincola LC non-breeding 2003 120 individuals B1i, C2
Little Tern Sternula albifrons LC breeding 1996 18-158 breeding pairs C2, C6
Common Tern Sterna hirundo LC breeding 1996 58-830 breeding pairs C6
Sandwich Tern Thalasseus sandvicensis LC breeding 1996 10-772 breeding pairs B1i, C2, C6
Greater Spotted Eagle Clanga clanga VU passage 1996 6-16 individuals A1, C1
Red-footed Falcon Falco vespertinus NT passage 1996 438-3,110 individuals A4ii, B1iii, C2
A4iii Species group - waterbirds n/a winter - 20,000 individuals A4iii, C4
A4iv Species group - soaring birds/cranes n/a passage 1996-2004 147,002-154,913 individuals A4iv, B1iv, C5

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)
2007 low very unfavourable low
Was the whole site covered? No State assessed by Population
Accuracy of information -

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Agricultural expansion and intensification livestock farming and ranching (includes forest grazing) - small-holder grazing, ranching or farming happening now small area/few individuals (<10%) no or imperceptible deterioration low

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Recurvirostra avosetta Pied Avocet 450 150 breeding pairs 34 very unfavourable
Charadrius alexandrinus 80 7 breeding pairs 9 very unfavourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Some of site covered (10-49%) A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species Not assessed low
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)
Nesebar State Game Husbandries 84,590 protected area overlaps with site 0
Burgaski solnitsi Zashtitena Mestnost 965 protected area contained by site 0
Aytoska planina Site of Community Importance (Habitats Directive) 29,379 protected area is adjacent to site 0
Atanasovsko ezero Site of Community Importance (Habitats Directive) 7,210 is identical to site 0
Atanasovsko ezero Special Protection Area (Birds Directive) 7,210 is identical to site 7,209
Atanasovsko ezero Poddarzhan Rezarvat 1,032 protected area contained by site 0
Atanasovo Lake Managed Reserve 1,050 protected area contained by site 1,050
Atanasovo Lake Ramsar Site, Wetland of International Importance 1,404 protected area contained by site 1,404

Local conservation groups

The local conservation groups below are working to support conservation at this IBA.

Name Year formed
BSPB Bourgas Branch 0
For more information on BirdLife's work with Local conservation groups please click here.

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Grassland Mesophile grasslands, Humid grasslands -
Wetlands (inland) Standing brackish and salt water, Water fringe vegetation -
Artificial/Terrestrial Arable land, Other urban and industrial areas, Perennial crops, orchards and groves, Ruderal land -
Coastline Salt marshes -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
nature conservation and research -
agriculture -
other -
urban/industrial/transport -
For further information about the land use classification please click here.


Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Atanasovsko Lake. Downloaded from http://www.birdlife.org on 15/04/2021.