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The site was identified as internationally important for bird conservation in 2000 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Whooper Swan Cygnus cygnus	LC	passage (1997)	3,000 birds	A4i, B1i, C2
Greylag Goose Anser anser	LC	breeding (1997)	69 pairs	B1i, C3
Greylag Goose Anser anser	LC	passage (1997)	1,000 birds	B1i, C3
Bean Goose Anser fabalis	LC	passage (1997)	3,500 birds	B1i, C3
Common Goldeneye Bucephala clangula	LC	passage (1997)	12,000 birds	A4i, B1i, C3
Goosander Mergus merganser	LC	passage (1997)	3,000 birds	A4i, B1i, C3
Common Pochard Aythya ferina	VU	breeding (1997)	210 pairs	B3
Common Pochard Aythya ferina	VU	passage (1997)	2,500 birds	B3
Northern Shoveler Spatula clypeata	LC	passage (1997)	500 birds	B1i, C3
Northern Pintail Anas acuta	LC	passage (1997)	1,500 birds	B1i, C3
Common Teal Anas crecca	LC	passage (1997)	4,000 birds	B1i, C3
Corncrake Crex crex	LC	breeding (1997)	2–12 pairs	B2, C6
Spotted Crake Porzana porzana	LC	breeding (1997)	25 pairs	B3, C6
Common Crane Grus grus	LC	passage (1997)	1,200 birds	B1i, C2
Eurasian Bittern Botaurus stellaris	LC	breeding (1997)	14 pairs	B2, C6
Spotted Redshank Tringa erythropus	LC	passage (1997)	1,000 birds	A4i, B1i, C3
Common Redshank Tringa totanus	LC	breeding (1997)	120 pairs	B2
Common Redshank Tringa totanus	LC	passage (1997)	300 birds	B2
Little Gull Hydrocoloeus minutus	LC	breeding (1997)	228 pairs	B1i, B2, C3
Mew Gull Larus canus	LC	breeding (1997)	897 pairs	B2
Caspian Tern Hydroprogne caspia	LC	passage (1997)	130 birds	B1i, C2
Hen Harrier Circus cyaneus	LC	breeding (1997)	20 pairs	B2
Sedge Warbler Acrocephalus schoenobaenus	LC	breeding (1997)	2,500 pairs	B3
Common Reed-warbler Acrocephalus scirpaceus	LC	breeding (1997)	600 pairs	B3
Thrush Nightingale Luscinia luscinia	LC	breeding (1997)	180 pairs	B3
A4iii Species group - waterbirds	n/a	passage (1997)	84,500 birds	A4iii, C4

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2000. The most recent assessment (2010) is shown below.

State (condition of the trigger species' populations)
Species	Actual vs Reference (units)	% remaining	Result
Whooper Swan Cygnus cygnus	2,200 / 1,800 (birds)	100	good
Greylag Goose Anser anser	1,000 / 1,000 (birds)	100	good
Bean Goose Anser fabalis	1,100 / 3,500 (birds)	32	very poor
Common Goldeneye Bucephala clangula	4,000 / 12,000 (birds)	34	very poor
Goosander Mergus merganser	1,800 / 3,000 (birds)	60	poor
Common Pochard Aythya ferina	100 / 2,500 (birds)	4	very poor
Common Pochard Aythya ferina	90 / 210 (pairs)	43	poor
Northern Pintail Anas acuta	450 / 1,500 (birds)	30	very poor
Anas crecca	4,000 / 4,000 (birds)	100	good
Spotted Redshank Tringa erythropus	200 / 1,000 (birds)	20	very poor
Common Redshank Tringa totanus	55 / 120 (pairs)	46	poor
Little Gull Hydrocoloeus minutus	55 / 225 (pairs)	25	very poor
Mew Gull Larus canus	900 / 900 (pairs)	100	good
Caspian Tern Hydroprogne caspia	130 / 130 (birds)	100	good

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Pollution	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Energy production and mining	likely in long term (>4 years)	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Invasive and other problematic species and genes	happe­ning now	some of popul­ation/area (10–49%)	no or slight decline (<1% over 3 gener­ations)	low
Human intrusions and disturbance	happe­ning now	some of popul­ation/area (10–49%)	no or slight decline (<1% over 3 gener­ations)	low
Residential and commercial development	happe­ning now	few indivi­duals/small area (<10%)	slow decline (1–10% over 3 gener­ations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Most of area (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

Year	Protected Area	Designation (management category)	% coverage of IBA
2011	Selkämeren kansallispuisto	Kansallispuisto (II)	11

Habitat	% of IBA	Habitat detail
Forest	major (>10)	Broadleaved deciduous woodland; Alluvial and very wet forest
Grassland	major (>10)	Humid grasslands; Mesophile grasslands
Marine Coastal/Supratidal	major (>10)
Marine Intertidal	major (>10)
Marine Neritic	major (>10)

Land use	% of IBA
nature conservation and research	-
water management	-
fisheries/aquaculture	-
tourism/recreation	-
hunting	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Pori archipelago and wetlands (Finland). Downloaded from https://datazone.birdlife.org/site/factsheet/pori-archipelago-and-wetlands-iba-finland on 22/12/2024.