Data Zone
The site was identified as internationally important for bird conservation in 2009 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 |
|---|---|---|---|---|
| Gadwall Mareca strepera | LC | breeding (2004–2007) | 14–25 breeding pairs | B2 |
| Horned Grebe Podiceps auritus | VU | breeding (2005–2007) | 16–18 breeding pairs | B2, C6 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2009. The most recent assessment (2013) is shown below.
| IBA conservation status | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2013 | near favourable | high | very 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 | ||
| Gadwall Mareca strepera | 327 / 160 (individuals) | 100 | favourable | ||
| Horned Grebe Podiceps auritus | 8 / 10 (breeding pairs) | 80 | near 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 | most of population/area (50–90%) | slow deterioration (1–10% over 3 generations) | high |
| Transportation and service corridors | likely in short term (within 4 years) | some of population/area (10–49%) | rapid deterioration (>30% over 3 generations) | high |
| Residential and commercial development | likely in short term (within 4 years) | some of population/area (10–49%) | moderate deterioration (10–30% in 3 generations) | medium |
| Human intrusions and disturbance | happening now | few individuals/small area (<10%) | slow deterioration (1–10% over 3 generations) | low |
| Response (conservation actions taken for the key species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Little/none of site covered (<10%) | No management planning has taken place | Some limited conservation initiatives are in place | very low |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Coastal/Supratidal | 70 | |
| Forest | 20 | Alluvial and very wet forest; Mixed woodland |
| Artificial/Terrestrial | 10 | Ruderal land |
| Land use | % of IBA |
|---|---|
| tourism/recreation | major (>10) |
| agriculture | minor (<10) |
| urban/industrial/transport | minor (<10) |
Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Suomenoja (Finland). Downloaded from
https://datazone.birdlife.org/site/factsheet/suomenoja-iba-finland on 19/01/2025.