• Summary
• Text account
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• Reference and further resources

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
Caspian Tern Hydroprogne caspia	LC	breeding	1997	53 breeding pairs	A4i, B1i, B2, C2, C6
Black Guillemot Cepphus grylle	LC	breeding	1997	224-229 breeding pairs	B1ii, B2

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

Threats to the site (pressure)
Threat Level 1	Threat Level 2	Timing	Scope	Severity	Result
Human intrusions and disturbance	recreational activities	likely in short term (within 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
Invasive and other problematic species and genes	invasive non-native/alien species/diseases - unspecified species	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
Hydroprogne caspia	Caspian Tern	80	80	breeding pairs	100	favourable
Cepphus grylle	Black Guillemot	225	225	breeding pairs	100	favourable

Conservation actions taken at site (response)
Conservation Designation	Management Planning	Conservation Action	Result
Most of site (50-90%) covered (including the most critical parts for important bird species)	No management plan exists but the management planning process has begun	The conservation measures needed for the site are being comprehensively and effectively implemented	medium

For more information about IBA monitoring please click here

Protection status:

Protected Area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
Söderskärin luonnonsuojelualue	Private Nature Reserve	2,104	protected area contained by site	2,134
Söderskärin ja Långörenin saaristo	Special Protection Area (Birds Directive)	355	protected area overlaps with site	13,016
Söderskär & Långören Archipelago	Ramsar Site, Wetland of International Importance	18,219	protected area overlaps with site	11,522
Långörenin saariryhmän luonnonsuojelualue	State Nature Reserve	50	protected area contained by site	8,338

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

For further information about the habitat classification please click here.

Land-use	Extent (% of site)
unknown	-

For further information about the land use classification please click here.

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Recommended citation
BirdLife International (2019) Important Bird Areas factsheet: Porvoo outer archipelago. Downloaded from http://www.birdlife.org on 18/10/2019.