Vrana Lake and Jasen

IBA Criteria

Year of most recent IBA criteria assessment: 2010

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Spotted Crake Porzana porzana LC breeding 2010 2-3 breeding pairs C6
Baillon's Crake Zapornia pusilla LC breeding 2010 1-2 breeding pairs B2, C2, C6
Eurasian Bittern Botaurus stellaris LC breeding 2010 2-3 males C6
Ixobrychus minutus NR breeding 2010 100-150 breeding pairs B2, C6
Pygmy Cormorant Microcarbo pygmaeus LC breeding 2010 10-22 breeding pairs C6
Pygmy Cormorant Microcarbo pygmaeus LC winter 2010 250-800 individuals B1i, C2, C6
Moustached Warbler Acrocephalus melanopogon LC winter 2010 500-600 individuals C2, C6
A4iii Species group - waterbirds n/a winter 2010 min 20,000 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 not assessed low
Was the whole site covered? Yes State assessed by unset
Accuracy of information unknown

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Natural system modifications dams & water management/use - abstraction of surface water (commercial use) happening now whole area/population (>90%) slow but significant deterioration high
Pollution agricultural & forestry effluents - type unknown/unrecorded happening now whole area/population (>90%) slow but significant deterioration high

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90%) covered by appropriate conservation designation A management plan exists but it is out of date or not comprehensive Very little or no conservation action taking place low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)
Vransko jezero i Jasen Other Area 5,912 protected area contained by site 5,912
Vransko jezero - rezervat Special Reserve 883 protected area contained by site 883
Vransko Jezero Nature Park 5,749 protected area contained by site 5,746


IUCN Habitat Habitat detail Extent (% of site)
Wetlands (inland) Standing freshwater, Water fringe vegetation -
Artificial/Terrestrial Arable land -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
hunting -
tourism/recreation -
other -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Vrana Lake and Jasen. Downloaded from on 30/03/2020.