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 |
|---|---|---|---|---|
| Greylag Goose Anser anser | LC | passage (1994) | 1,001–5,000 birds | A4i, B1i, C3 |
| Goosander Mergus merganser | LC | passage (1994) | 1,001–5,000 birds | A4i, B1i, C3 |
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 | good | medium | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| no | population | good | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Greylag Goose Anser anser | 1,800 / 1,800 (birds) | 100 | good | ||
| Goosander Mergus merganser | 2,300 / 2,000 (birds) | 100 | good | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Pollution | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Human intrusions and disturbance | happening now | most of population/area (50–90%) | 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 |
| Some of area covered (10–49%) | A management plan exists, but it is out of date or not comprehensive | Some limited conservation initiatives are in place | low |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1992 | Tammimäen lehtojensuojelualue | Lehtojensuojelualue (IV) | <1 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Coastal/Supratidal | 100 |
| Land use | % of IBA |
|---|---|
| fisheries/aquaculture | - |
| tourism/recreation | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Mietoistenlahti bay (Finland). Downloaded from
https://datazone.birdlife.org/site/factsheet/mietoistenlahti-bay-iba-finland on 25/12/2024.