Sites - Important Bird and Biodiversity Areas (IBAs)
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Koskeljärvi, Vaaljärvi and Pitkäjärvi lakes
Finland, Länsi-Suomen lääni
22o 7.00' East 60o 56.00' North
B1i, B3, C3, C6
Year of IBA assessment
Site description Three adjacent, shallow and nutrient-rich lakes with lush vegetation on the upper course of the Lapijoki river. Some parts of the shoreline are bordered by wide marshes. The water-levels of Koskeljärvi and Pitkäjärvi lakes are regulated, which has increased the lake's value for birds on the former, but on the latter has caused over-eutrophication. Koskeljärvi, the most important ornithologically, is the largest lake in south-western Finland without any settlements on its shores.
Key Biodiversity An important breeding area for wetland birds, including nationally important numbers of Circus aeruginosus (6 pairs). Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (max. 6 individuals, passage).
Protection statusNational Low International Partial18 ha of IBA covered by Protected Area on Private Land (Kirkkolahti, 1 ha). 17 ha of IBA covered by Protected Area on Private Land (Tanska, 17 ha). 1,539 ha covered by Special Protection Area (Koskeljärvi).
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BirdLife International (2014) Important Bird Areas factsheet: Koskeljärvi, Vaaljärvi and Pitkäjärvi lakes. Downloaded from
http://www.birdlife.org on 19/12/2014
To provide new information to update this factsheet or to correct any errors, please email BirdLife