Krunnit archipelago

IBA Criteria

Year of most recent IBA criteria assessment: 2000

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Goosander Mergus merganser LC passage 1997 2,000 individuals B1i, C3
Lesser Black-backed Gull Larus fuscus LC breeding 1997 170 breeding pairs B3
Caspian Tern Hydroprogne caspia LC breeding 1997 50-60 breeding pairs A4i, B1i, B2, C2, C6

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)
2010 low favourable medium
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
Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) no or imperceptible deterioration low

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Anser anser Greylag Goose 1200 1750 individuals 100 favourable
Mergus merganser Goosander 800 450 individuals 57 not assessed
Larus fuscus Lesser Black-backed Gull 170 170 breeding pairs 100 favourable

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90%) covered by appropriate conservation designation A management plan exists but it is out of date or not comprehensive Some limited conservation initiatives are in place medium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

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Perämeren saaret Site of Community Importance (Habitats Directive) 7,136 protected area overlaps with site 0
Perämeren saaret Special Protection Area (Birds Directive) 7,136 protected area overlaps with site 4,195
Krunnit Islands Ramsar Site, Wetland of International Importance 4,435 protected area contained by site 4,436
Krunnien luonnonsuojelualue Yksityinen luonnonsuojelualue 4,424 protected area overlaps with site 4,434


IUCN Habitat Habitat detail Extent (% of site)
Forest -
Sea Sea inlets and coastal features -
Coastline Rock stacks and islets -
Marine Neritic -
Marine Coastal/Supratidal -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
not utilised -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Krunnit archipelago. Downloaded from on 07/02/2023.