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close| Location | Poland, mazowieckie,warminsko-mazurskie |
| Central coordinates | 21o 20.00' East 53o 12.00' North |
| IBA criteria | C1, C6 |
| Area | 34,390 ha |
| Altitude | 100 - 125m |
| Year of IBA assessment | 2010 |
Site description Large areas of fen are located in the middle stretch of this river valley and in flooded parts of the upper river valley. In the lower stretches there is natural old-growth riverine forest, and sandy grasslands.
Populations of IBA trigger species
| Species | Season | Period | Population estimate | Quality of estimate | IBA Criteria | IUCN Category |
|---|---|---|---|---|---|---|
| Corncrake Crex crex | breeding | 2008 | 196-215 males only | good | C1 | Least Concern |
| Black-tailed Godwit Limosa limosa | breeding | 2008 | 26 breeding pairs | good | C1 | Near Threatened |
| Eurasian Curlew Numenius arquata | breeding | 2008 | 46-56 breeding pairs | good | C1 | Near Threatened |
| Eurasian Nightjar Caprimulgus europaeus | breeding | 2008 | 100 breeding pairs | poor | C6 | Least Concern |
| European Roller Coracias garrulus | breeding | 2008 | 5-6 breeding pairs | good | C6 | Near Threatened |
Protected areas
| Protected area | Designation | Area (ha) | Relationship with IBA | Overlap with IBA (ha) | |
|---|---|---|---|---|---|
| Bory bagienne i torfowiska Karaska - PLH140046 | Habitats Directive | 559 | protected area overlaps with site | 92 | |
| Dolina Dolnej Narwi - PLB140014 | Birds Directive | 26,528 | protected area is adjacent to site | 0 | |
| Doliny Omulwi i Ptodownicy - PLB140005 | Birds Directive | 34,387 | protected area contained by site | 34,387 | |
| Puszcza Napiwodzko-Ramucka - PLB280007 | Birds Directive | 116,605 | protected area is adjacent to site | 0 |
Habitats
| IUCN habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Forest | Alluvial and very wet forest | 24% |
| Grassland | Mesophile grasslands; Steppes and dry calcareous grassland | 43% |
| Wetlands (inland) | Fens, transition mires and springs; Rivers and streams; Water fringe vegetation | 1% |
| Artificial landscapes (terrestrial) | Highly improved re-seeded landscapes; Ruderal land | 31% |
| Other | 1% |
Land use
| Land-use | Extent (% of site) |
|---|---|
| agriculture | - |
| not utilised | - |
| hunting | - |
Management considerations Since 1991 the upper river has been regulated, which has influenced the area of flooding. Affected areas have included some areas of marsh, meadow, willow Salix scrub and riverside forest.
Protection status National None International None
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Omulew and Plodownica Rivers Valleys. Downloaded from http://www.birdlife.org on 19/06/2013
To provide new information to update this factsheet or to correct any errors, please email BirdLife
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