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 ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger 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 birds | C3 |
| Greater White-fronted Goose Anser albifrons | LC | passage (2008–2009) | 10,000–12,000 birds | C3 |
| A4iii Species group - waterbirds | n/a | passage (2001–2009) | 35,000 birds | 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 assessment | |||
|---|---|---|---|
| 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 trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Agricultural expansion and intensification | happening now | whole of population/area (>90%) | rapid decline (>30% over 3 generations) | very high |
| Invasive and other problematic species and genes | happening now | whole of population/area (>90%) | rapid decline (>30% over 3 generations) | very high |
| Biological resource use | happening now | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | very high |
| Climate change and severe weather | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Energy production and mining | likely in long term (>4 years) | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | medium |
| Residential and commercial development | likely in long term (>4 years) | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Natural system modifications | happening now | few individuals/small area (<10%) | 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 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 (2024) Important Bird Area factsheet: Mala Welna River Valley (Poland). Downloaded from
https://datazone.birdlife.org/site/factsheet/mala-welna-river-valley-iba-poland on 26/12/2024.