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 IBA criteria.
Populations meeting IBA criteria ('key species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Caspian Tern Hydroprogne caspia | LC | breeding (1997) | 42 breeding pairs | B1i, B2, C2, C6 |
| Black Guillemot Cepphus grylle | LC | breeding (1997) | 169–267 breeding pairs | B1ii, B2 |
| Razorbill Alca torda | LC | breeding (1997) | 320–590 breeding pairs | B1ii, B3, 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 status | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2010 | near favourable | medium | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | good | |
| State (condition of the key species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Caspian Tern Hydroprogne caspia | 50 / 50 (breeding pairs) | 100 | favourable | ||
| Black Guillemot Cepphus grylle | 250 / 300 (breeding pairs) | 84 | near favourable | ||
| Razorbill Alca torda | 600 / 600 (breeding pairs) | 100 | favourable | ||
| Pressure (threats to the key species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Invasive and other problematic species and genes | happening now | some of population/area (10–49%) | slow deterioration (1–10% over 3 generations) | medium |
| Human intrusions and disturbance | happening now | some of population/area (10–49%) | no deterioration (<1% over 3 generations) | low |
| Response (conservation actions taken for the key species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Most of site (50–90%) covered (including the most critical parts for important bird species) | No management plan exists, but the management planning process has begun | Substantive conservation measures are being implemented, but these are not comprehensive and are limited by resources and capacity | low |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1953 | ASPSKÄRIN LUONNONSUOJELUA | Yksityinen luonnonsuojelualue (IV) | 4 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Coastal/Supratidal | 50 | |
| Marine Neritic | 50 |
| Land use | % of IBA |
|---|---|
| tourism/recreation | - |
| hunting | - |
Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Pernaja outer archipelago (Finland). Downloaded from
https://datazone.birdlife.org/site/factsheet/pernaja-outer-archipelago-iba-finland on 16/01/2025.