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The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Whooper Swan Cygnus cygnus	LC	passage	1997	400 individuals	B1i, C2
White-tailed Sea-eagle Haliaeetus albicilla	LC	passage	1997	10-15 individuals	A1, C1

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2000) may differ.

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	Reference	Actual	Units	% remaining	Result
Whooper Swan Cygnus cygnus	400	400	individuals	100	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Pollution	happening now	majority/most of area/population (50-90%)	slow but significant deterioration	high
Natural system modifications	happening now	majority/most of area/population (50-90%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	The conservation measures needed for the site are being comprehensively and effectively implemented	high

Year	Protected Area	Designation	% overlap with IBA
1993	Puurijärven ja Isonsuon kansallispuisto	Kansallispuisto	73
1995	Puurijärvi-Isosuo	Site of Community Importance (Habitats Directive)	80
1996	Kokemäenjoki	Site of Community Importance (Habitats Directive)	1
1998	Puurijärvi - Isosuo	Special Protection Area (Birds Directive)	86

Habitat1	Habitat detail	% of IBA
Wetlands (inland)	Standing freshwater, Raised bogs	91
Artificial/Terrestrial		7

1. IUCN Habitat classification.

Land use	% of IBA
not utilised	90
agriculture	7

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Puurijärvi-Isosuo wetlands (Finland). Downloaded from https://datazone.birdlife.org/site/factsheet/puurijärvi-isosuo-wetlands-iba-finland on 23/11/2024.