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 (2004–2008) | 7,000–8,000 birds | C3 |
| Common Little Bittern Ixobrychus minutus | LC | breeding (2004–2009) | 23–34 pairs | C6 |
| A4iii Species group - waterbirds | n/a | passage (2004–2008) | 18,000–22,000 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 | good | very high | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | medium | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Ixobrychus minutus | 25 / 25 (pairs) | 100 | good | ||
| State (condition of the trigger species' habitats) | |||
|---|---|---|---|
| Habitat | Quantity (% remaining) | Quality (% carrying capacity) | Result |
| Wetlands (inland) | - | good (>90%) | good |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Natural system modifications | happening now | most of population/area (50–90%) | rapid decline (>30% over 3 generations) | very high |
| Agricultural expansion and intensification | happening now | most of population/area (50–90%) | rapid decline (>30% over 3 generations) | very high |
| Residential and commercial development | likely in short term (<4 years) | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Biological resource use | likely in short term (<4 years) | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Human intrusions and disturbance | likely in short term (<4 years) | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Whole area (>90%) covered by appropriate conservation designation | Not assessed | 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 |
|---|---|---|---|
| 1974 | Ostoja żółwia błotnego | Rezerwat Przyrody (IV) | <1 |
| 1989 | OChK Pojezierze Krzywinsko - Osieckie w woj. Wielkopolskim | Protected Landscape Area (-) | 100 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Artificial/Terrestrial | 35 | Highly improved re-seeded landscapes; Arable land; Ruderal land |
| Grassland | 24 | Mesophile grasslands |
| Wetlands (inland) | 21 | Standing freshwater; Water fringe vegetation |
| Forest | 18 | Broadleaved deciduous woodland; Native coniferous woodland; Mixed woodland; Alluvial and very wet forest |
| Other | 2 |
| Land use | % of IBA |
|---|---|
| fisheries/aquaculture | 75 |
| water management | 40 |
| tourism/recreation | 15 |
| agriculture | 10 |
| forestry | 5 |
| hunting | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Woniesc reservoir (Poland). Downloaded from
https://datazone.birdlife.org/site/factsheet/woniesc-reservoir-iba-poland on 26/12/2024.