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close| Location | Poland, opolskie |
| Central coordinates | 17o 15.00' East 50o 27.00' North |
| IBA criteria | C3, C4, C6 |
| Area | 2,072 ha |
| Altitude | 200 m |
| Year of IBA assessment | 2010 |
Ornithological information Up to 60,000 ducks, geese, gulls and waders occur on migration and in winter.
Site description A large storage reservoir on the Nysa K³odzka river, in a hilly agricultural landscape, near Otmuchów reservoir. At the western end there are artificial islands created as a result of gravel exploitation. Southern and western shores are partly overgrown with willow Salix scrub with sparse water-fringe vegetation. Two river mouths (the Widna and the Bia³a G³uchowska) are important for birds. Land-uses include gravel exploitation.
Populations of IBA trigger species
| Species | Season | Period | Population estimate | Quality of estimate | IBA Criteria | IUCN Category |
|---|---|---|---|---|---|---|
| Bean Goose Anser fabalis | passage | 2004-2008 | 29,500 individuals | good | C3 | Least Concern |
| Mallard Anas platyrhynchos | passage | 1995-2003 | 23,000 individuals | - | C3 | Least Concern |
| Black-headed Gull Larus ridibundus | breeding | 2005-2008 | 3,613-4,410 breeding pairs | good | Least Concern | |
| Mediterranean Gull Larus melanocephalus | breeding | 2004-2009 | 3-9 breeding pairs | good | C6 | Least Concern |
| Common Tern Sterna hirundo | breeding | 2008 | 186 breeding pairs | good | C6 | Least Concern |
| A4iii Species group - waterbirds | passage | 2004-2008 | 30,000 individuals | good | C4 |
Protected areas
| Protected area | Designation | Area (ha) | Relationship with IBA | Overlap with IBA (ha) | |
|---|---|---|---|---|---|
| Zbiornik Nyski - PLB160002 | Birds Directive | 2,128 | protected area overlaps with site | 1,814 |
Habitats
| IUCN habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Wetlands (inland) | Standing freshwater; Water fringe vegetation | 100% |
Land use
| Land-use | Extent (% of site) |
|---|---|
| tourism/recreation | 10% |
| water management | 90% |
Management considerations Rapid filling of the reservoir (during river floods) reduces or eliminates suitable foraging/resting habitat for staging waders on migration.
Protection status National None International None
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Nysa reservoir. Downloaded from http://www.birdlife.org on 22/05/2013
To provide new information to update this factsheet or to correct any errors, please email BirdLife
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