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 |
|---|---|---|---|---|
| Corncrake Crex crex | LC | breeding (1996) | 10–25 pairs | A1, B2, C1, C6 |
| Little Gull Hydrocoloeus minutus | LC | breeding (1991) | 40 pairs | B2 |
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 | medium |
| 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 | ||
| Corncrake Crex crex | 20 / 20 (pairs) | 100 | good | ||
| Little Gull Hydrocoloeus minutus | 0 / 40 (pairs) | 0 | very poor | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Agricultural expansion and intensification | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Pollution | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Natural system modifications | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Most of area (50–90%) covered (including the most critical parts for important bird species) | A management plan exists, but it is out of date or not comprehensive | Substantive conservation measures are being implemented, but these are not comprehensive and are limited by resources and capacity | medium |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Artificial/Terrestrial | 55 | |
| Wetlands (inland) | 40 | Standing freshwater |
| Forest | - | Mixed woodland |
| Land use | % of IBA |
|---|---|
| hunting | 40 |
| agriculture | 30 |
| unknown | 25 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Värtsilä valley (Finland). Downloaded from
https://datazone.birdlife.org/site/factsheet/värtsilä-valley-iba-finland on 25/12/2024.