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) | 29,500 birds | C3 |
| Mallard Anas platyrhynchos | LC | passage (1995–2003) | 23,000 birds | C3 |
| Mediterranean Gull Larus melanocephalus | LC | breeding (2004–2009) | 3–9 pairs | C6 |
| Common Tern Sterna hirundo | LC | breeding (2008) | 186 pairs | C6 |
| A4iii Species group - waterbirds | n/a | passage (2004–2008) | 30,000 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 (2008) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2008 | 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 | ||
| Black-headed Gull Larus ridibundus | 4,410 / 4,410 (pairs) | 100 | good | ||
| Mediterranean Gull Larus melanocephalus | 9 / 9 (pairs) | 100 | good | ||
| Common Tern Sterna hirundo | 186 / 186 (pairs) | 100 | good | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Invasive and other problematic species and genes | happening now | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | very high |
| Biological resource use | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Human intrusions and disturbance | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Natural system modifications | happening now | most of population/area (50–90%) | no or slight decline (<1% over 3 generations) | low |
| Residential and commercial development | happening now | some of population/area (10–49%) | no or slight decline (<1% over 3 generations) | low |
| Pollution | 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 planning has taken place | Some limited conservation initiatives are in place | low |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Wetlands (inland) | 100 | Standing freshwater; Water fringe vegetation |
| Land use | % of IBA |
|---|---|
| water management | 90 |
| tourism/recreation | 10 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Nysa reservoir (Poland). Downloaded from
https://datazone.birdlife.org/site/factsheet/nysa-reservoir-iba-poland on 23/12/2024.