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 |
|---|---|---|---|---|
| Caspian Tern Hydroprogne caspia | LC | breeding (1997) | 53 pairs | A4i, B1i, B2, C2, C6 |
| Black Guillemot Cepphus grylle | LC | breeding (1997) | 224–229 pairs | B1ii, 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 | good | medium | 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 | ||
| Caspian Tern Hydroprogne caspia | 80 / 80 (pairs) | 100 | good | ||
| Black Guillemot Cepphus grylle | 225 / 225 (pairs) | 100 | good | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Human intrusions and disturbance | likely in short term (<4 years) | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Invasive and other problematic species and genes | 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 |
| Most of area (50–90%) covered (including the most critical parts for important bird species) | No management plan exists, but the management planning process has begun | The conservation measures needed for the site are being comprehensively and effectively implemented | medium |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1930 | SÖDERSKÄRIN LUONNONSUOJEL | Yksityinen luonnonsuojelualue (IV) | 9 |
| 1970 | Långörenin saariryhmän luonnonsuojelualue | Valtion luonnonsuojelualue (IV) | 37 |
| 2001 | Sandkallanin-Stora Kölhällenin hylkeidensuojelualue | Hylkeidensuojelualue (IV) | 4 |
| 2005 | STOR-PELLINGE YTTRE HÄLLARNATURSKYDDSOMRÅDE | Yksityinen luonnonsuojelualue (IV) | 6 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Forest | - | |
| Marine Coastal/Supratidal | - | |
| Marine Neritic | - |
| Land use | % of IBA |
|---|---|
| unknown | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Porvoo outer archipelago (Finland). Downloaded from
https://datazone.birdlife.org/site/factsheet/porvoo-outer-archipelago-iba-finland on 23/12/2024.