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close| Location | Finland, Länsi-Suomen lääni |
| Central coordinates | 22o 34.00' East 61o 14.00' North |
| IBA criteria | A1, B1i, C1, C2 |
| Area | 3,474 ha |
| Altitude | 45 m |
| Year of IBA assessment | 2000 |
Ornithological information An important staging area for Haliaeetus albicilla and Cygnus cygnus. Podiceps grisegena (20 pairs), Porzana porzana (15 pairs) and Grus grus (10 pairs) also breed. Species of global conservation concern that do not meet IBA criteria: Crex crex (max. 4 pairs, breeding).
Site description A complex of habitats, comprising the large, shallow and eutrophic Puurijärvi lake, open fields (220 ha) and several adjacent mires along the Kokemäki river. The lake is mainly bordered by forests and in summer becomes almost totally overgrown with vegetation. Isosuo and other mires are large raised bogs with extensive open areas of pools in the centre, and sparse swamp-forests or mixtures of swamps and forests at the edges.
Populations of IBA trigger species
| Species | Season | Period | Population estimate | Quality of estimate | IBA Criteria | IUCN Category |
|---|---|---|---|---|---|---|
| Whooper Swan Cygnus cygnus | passage | 1997 | 400 individuals | - | B1i, C2 | Least Concern |
| White-tailed Eagle Haliaeetus albicilla | passage | 1997 | 10-15 individuals | - | A1, C1 | Least Concern |
Protected areas
| Protected area | Designation | Area (ha) | Relationship with IBA | Overlap with IBA (ha) | |
|---|---|---|---|---|---|
| Kokemäenjoki - FI0200148 | Habitats Directive | 187 | protected area overlaps with site | 28 | |
| Puurijärven ja Isonsuon kansallispuisto | National Park | 2,697 | protected area contained by site | 2,538 |
|
| Puurijärvi - Isosuo - FI0200149 | Birds Directive | 3,431 | protected area overlaps with site | 2,986 | |
| Puurijärvi-Isosuo - FI0200001 | Habitats Directive | 3,204 | protected area overlaps with site | 2,786 |
Habitats
| IUCN habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Wetlands (inland) | Raised bogs; Standing freshwater | 91% |
| Artificial landscapes (terrestrial) | 7% |
Land use
| Land-use | Extent (% of site) |
|---|---|
| agriculture | 7% |
| not utilised | 90% |
Management considerations Puurijärvi lake has a birdwatching tower. Restoration plans include the raising of water-levels.
Protection status National Partial International High2,538 ha of IBA covered by National Park (Puurijärvi-Isosuo, 2,538 ha). 3,126 ha of IBA covered by Special Protection Area (Puurijärvi-Isosuo).
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Puurijärvi-Isosuo wetlands. Downloaded from http://www.birdlife.org on 20/05/2013
To provide new information to update this factsheet or to correct any errors, please email BirdLife
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