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Location Finland, Etelä-Suomen lääni
Central coordinates 27o 0.00' East  60o 20.00' North
IBA criteria B1i, B1ii, B2, B3, C2, C3, C6
Area 93,253 ha
Year of IBA assessment 2000


Site description A very large area of outer archipelago covering the whole north-east part of the Gulf of Finland. The site comprises extensive areas of open sea scattered with several large and forested islands, and numerous small, rocky islets. There are some remarkable submerged ridges in the area, and, more importantly for the avifauna, extensive spawning areas of the Baltic herring.

Key Biodiversity The area holds the largest population of Larus fuscus fuscus in the country, and also is important for other archipelagic species such as Alca torda and Cepphus grylle. During spring migration hundreds of thousands of Arctic ducks stop over within the IBA.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Mew Gull Larus canus breeding  1996  1,000 breeding pairs  good  B2  Least Concern 
Lesser Black-backed Gull Larus fuscus breeding  1996  1,030 breeding pairs  good  B1i, B3, C3  Least Concern 
Caspian Tern Hydroprogne caspia breeding  1996  11 breeding pairs  good  B2, C6  Least Concern 
Arctic Tern Sterna paradisaea breeding  1996  1,200 breeding pairs  good  C2  Least Concern 
Razorbill Alca torda breeding  1996  710 breeding pairs  good  B1ii, B3, C3  Near Threatened 
Black Guillemot Cepphus grylle breeding  1996  560 breeding pairs  good  B1ii, B2  Least Concern 

IBA Monitoring

2010 high unfavourable low
Medium - based upon reliable but incomplete / partially representative data

Human intrusions and disturbance recreational activities happening now small area/few individuals (<10%) no or imperceptible deterioration low
Invasive & other problematic species, genes & diseases invasive non-native/alien species/diseases - unspecified species happening now some of area/population (10-49%) slow but significant deterioration medium
Pollution agricultural & forestry effluents - nutrient loads happening now majority/most of area/population (50-90%) slow but significant deterioration high

Larus canus Mew Gull 1000 600 individuals 60 unfavourable
Larus fuscus Lesser Black-backed Gull 1000 500 individuals 50 unfavourable

Whole area of site (>90%) covered by appropriate conservation designation  No management plan exists but the management planning process has begun  Some limited conservation initiatives are in place  low 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Itäisen Suomenlahden kansallispuisto National Park 707 protected area contained by site 93,253  


IUCN habitat Habitat detail Extent (% of site)
Forest   -
Sea   -
Coastline   -

Land use

Land-use Extent (% of site)
tourism/recreation -
hunting -

Protection status National High International High520 ha of IBA covered by National Park (Itäinen Suomenlahti, 520 ha). 93,043 ha of IBA covered by Special Protection Area (Itäisen Suomenlahden saaristo ja vedet).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Itäinen Suomenlahti National Park. Downloaded from on 28/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife