Data Zone
The site was identified as internationally important for bird conservation in 2010 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 |
|---|---|---|---|---|
| Bean Goose Anser fabalis | LC | passage (2008–2009) | 15,000–18,000 individuals | C3 |
| Greater White-fronted Goose Anser albifrons | LC | passage (2008–2009) | 10,000–12,000 individuals | C3 |
| A4iii Species group - waterbirds | n/a | passage (2001–2009) | 35,000 individuals | C4 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2010. The most recent assessment (2010) is shown below.
| IBA conservation status | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2010 | not assessed | very high | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | unset | medium | |
| Pressure (threats to the key species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Agricultural expansion and intensification | happening now | whole population/area (>90%) | rapid deterioration (>30% over 3 generations) | very high |
| Invasive and other problematic species and genes | happening now | whole population/area (>90%) | rapid deterioration (>30% over 3 generations) | very high |
| Biological resource use | happening now | whole population/area (>90%) | moderate deterioration (10–30% in 3 generations) | very high |
| Climate change and severe weather | happening now | most of population/area (50–90%) | slow deterioration (1–10% over 3 generations) | high |
| Energy production and mining | likely in long term (beyond 4 years) | some of population/area (10–49%) | moderate deterioration (10–30% in 3 generations) | medium |
| Residential and commercial development | likely in long term (beyond 4 years) | some of population/area (10–49%) | slow deterioration (1–10% over 3 generations) | medium |
| Natural system modifications | happening now | few individuals/small area (<10%) | 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 planning has taken place | Very little or no conservation action taking place | low |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Grassland | 45 | |
| Artificial/Terrestrial | 43 | |
| Wetlands (inland) | 11 | |
| Other | 1 |
Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Mala Welna River Valley (Poland). Downloaded from
https://datazone.birdlife.org/site/factsheet/mala-welna-river-valley-iba-poland on 18/01/2025.