Puurijärvi-Isosuo wetlands (1294)
Finland, Europe
Site overview
KBA status: confirmed
Year of last assessment: 2000
National site name: Puurijärvi-Isosuo ja ympäristön kosteikot
Central coordinates: Latitude: 61.2333, Longitude: 22.5667
System: freshwater, terrestrial
Elevation (m): 45 to 45
Area of KBA (km2): 36.65998
Protected area coverage (%): 85.26
KBA classification: Regional
Legacy site: Yes
Site details
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.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that was identified using previously established criteria and thresholds for the identification of Important Bird and Biodiversity Areas (IBAs) and for which available data indicate that it does not meet global KBA criteria and thresholds set out in the Global Standard.
Additional biodiversity: 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).
Habitats
Land use: agriculture (7%) | not utilised (90%)
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Artificial - Terrestrial | 7 | |
| Wetlands(Inland) | 91 |
Threats
Summary of threats to biodiversity at KBA: Puurijärvi lake has a birdwatching tower. Restoration plans include the raising of water-levels.
| Threat level 1 | Threat level 2 | Threat level 3 | Timing |
|---|---|---|---|
| Natural system modifications | Dams & water management/use | Dams (size unknown) | Ongoing |
| Pollution | Agricultural & forestry effluents | Soil erosion, sedimentation | Ongoing |