Data Zone
Country/territory: Finland
IBA criteria met: A1, A4i, B1i, C1, C2, C3 (2000)
For more information about IBA criteria, please click here
Area: 2,759 hectares (27.59 km2)
| IBA conservation status | |||
|---|---|---|---|
| Year of assessment (most recent) | State (condition) | Pressure (threat) | Response (action) |
| 2010 | poor | high | low |
| For more information about IBA monitoring, please click here | |||
Site description (2000 baseline)
Two adjacent large lakes lying south-east of Eura. Köyliönjärvi lake is 10 km long, eutrophic and surrounded by farmland and settlements. Several large ridge-like islands with mixed habitats stand in the middle of the lake. Cattle graze some parts of the shoreline keeping meadow vegetation low and deciduous forests open. The IBA also includes some of the most ornithologically important bays of Pyhäjärvi lake, which is otherwise nutrient-poor, (oligotrophic) and unimportant for birds.
Key biodiversity
One of the most important staging areas for Mergus merganser (in autumn) in Finland. Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (5 individuals, passage), Crex crex (1 pair, breeding).
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Köyliönjärvi and Pyhäjärvi lakes (Finland). Downloaded from
https://datazone.birdlife.org/site/factsheet/köyliönjärvi-and-pyhäjärvi-lakes-iba-finland on 23/12/2024.