Olvassuo (1346)
Finland, Europe
Site overview
KBA status: confirmed
Year of last assessment: 2025
National site name: Olvassuo
Central coordinates: Latitude: 65.1333, Longitude: 27.1333
System: terrestrial, freshwater
Elevation (m): 100 to 100
Area of KBA (km2): 270.72549
Protected area coverage (%): 100.00
KBA classification: Regional
Legacy site: Yes
Site details
Site description: A large wilderness area between the upper courses of the Iijoki and Kiiminkijoki rivers, with well-developed aapa mires and a multitude of streams and rivulets. Interspersed amongst the peatlands are small islands of mostly primeval boreal forest containing large amounts of dead wood. The area remains predominantly<I> </I>free of human activity.</P>
Rationale for qualifying as KBA: An important breeding area for boreal avifauna, and one of the best breeding sites in Finland for large, shy species such as <I>Cygnus cygnus</I>, <I>Anser fabalis</I> and <I>Grus grus</I>.</P>
Manageability of the site: Site identified based on BirdLife International's Important Bird and Biodiversity Areas, under which manageability is strongly recommended but not explicitly documented
Habitats
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Forest | 20 | |
| Wetlands(Inland) | 80 |
Threats
Summary of threats to biodiversity at KBA: The area is a candidate SAC.</P>
| Threat level 1 | Threat level 2 | Threat level 3 | Timing |
|---|---|---|---|
| Natural system modifications | Dams & water management/use | Abstraction of ground water (agricultural use) | Ongoing |
Additional information
Contributors: Site identified based on Important Bird and Biodiversity Areas by the BirdLife International Partnership