Koijärvi lake

Country/territory: Finland

IBA Criteria met: B3, C6 (2000)
For more information about IBA criteria please click here

Area: 200 ha

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2010 high very unfavourable low
For more information about IBA monitoring please click here

Site description
A small eutrophic lake surrounded by young deciduous forests in the heart of Häme province. The area of open water is small, with extensive marshes of Equisetum, Carex and grasses, which were harvested by local people until the 1950s, and now are encroaching on the lake. The major human activity is large-scale hunting in autumn.

Key biodiversity
One of the best breeding areas for Porzana porzana in Finland. Species of global conservation concern that do not meet IBA criteria: Crex crex (1-5 pairs, breeding).

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Koijärvi lake. Downloaded from on 02/12/2021.