Data Zone
The site was identified as internationally important for bird conservation in 2000 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Spotted Crake Porzana porzana | LC | breeding (1996) | 11–50 pairs | B3, C6 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2000. The most recent assessment (2010) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2010 | very poor | high | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | good | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Spotted Crake Porzana porzana | 1 / 20 (pairs) | 5 | very poor | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Pollution | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Human intrusions and disturbance | happening now | some of population/area (10–49%) | no or slight decline (<1% over 3 generations) | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Whole area (>90%) covered by appropriate conservation designation | A management plan exists, but it is out of date or not comprehensive | Very little or no conservation action taking place | low |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1979 | KOIJÄRVEN LUONNONSUOJELUALUE 1 | Yksityinen luonnonsuojelualue (IV) | 21 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Wetlands (inland) | 100 | Standing freshwater; Water fringe vegetation |
| Land use | % of IBA |
|---|---|
| hunting | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Koijärvi lake (Finland). Downloaded from
https://datazone.birdlife.org/site/factsheet/koijärvi-lake-iba-finland on 25/12/2024.