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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	42 breeding pairs	B1i, B2, C2, C6
Black Guillemot Cepphus grylle	LC	breeding	1997	169-267 breeding pairs	B1ii, B2
Razorbill Alca torda	LC	breeding	1997	320-590 breeding pairs	B1ii, B3, C3

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	happening now	some of area/population (10-49%)	no or imperceptible deterioration	low
Invasive and other problematic species and genes	invasive non-native/alien species/diseases - unspecified species	happening now	some of area/population (10-49%)	slow but significant deterioration	medium

Condition of key/trigger populations (state)
Scientific	Common	TargetPop	ActualPop	Units	Remaining	Result
Hydroprogne caspia	Caspian Tern	50	50	breeding pairs	100	favourable
Cepphus grylle	Black Guillemot	300	250	breeding pairs	84	near favourable
Alca torda	Razorbill	600	600	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	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	low

For more information about IBA monitoring please click here

Protected Area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
Pernajanlahtien ja Pernajan saariston merensuojelualue /Pernajabay and Pernaja Archipelago marine protection areas	Baltic Sea Protected Area (HELCOM)	65,755	protected area overlaps with site	0
Pernajanlahtien ja Pernajan saariston merensuojelualue	Site of Community Importance (Habitats Directive)	65,775	protected area overlaps with site	0
Pernajanlahtien ja Pernajan saariston merensuojelualue	Special Protection Area (Birds Directive)	65,775	protected area overlaps with site	14,046
Pernajan saariston luonnonsuojelualue	Yksityinen luonnonsuojelualue	48	protected area overlaps with site	0
HAVERÖRNIN LUONNONSUOJELU	Yksityinen luonnonsuojelualue	362	protected area contained by site	0
ASPSKÄRIN LUONNONSUOJELUA	Yksityinen luonnonsuojelualue	366	protected area contained by site	731
Aspskär Islands	Ramsar Site, Wetland of International Importance	728	protected area contained by site	369

IUCN Habitat	Habitat detail	Extent (% of site)
Sea		-
Coastline	Rock stacks and islets	-

For further information about the habitat classification please click here.

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

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

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Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Pernaja outer archipelago. Downloaded from http://www.birdlife.org on 29/01/2022.