|Central coordinates||6o 3.00' East 52o 42.00' North|
|IBA criteria||B1i, B2, C2, C3, C6|
|Year of IBA assessment||2000|
Site description An area of shallow lakes and canals (former peat-workings) with fens, reedbeds, swampy woodland and wet meadows, located to the north of the city of Zwolle. The IBA is adjacent to De Weerribben (064), with which it formed a single site (`De Wieden and De Weerribben', the former site NL027) in the previous pan-European IBA inventory (Grimmett and Jones 1989). Human activities include water-sports, tourism and reed-harvesting (`Other' land-use, below).
Key Biodiversity A roost for geese Anser from surrounding feeding areas, but no counts are available.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Great Cormorant Phalacrocorax carbo||breeding||1987-1991||864 breeding pairs||good||B1i, C3||Least Concern|
|Spotted Crake Porzana porzana||breeding||1995||5 breeding pairs||good||C6||Least Concern|
|Black Tern Chlidonias niger||breeding||1983-1984||128 breeding pairs||medium||B2, C2, C6||Least Concern|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|De Wieden||Nature Reserve with Management Subsidy||4,216||protected area contained by site||4,991|
|De Wieden||Wetlands of International Importance (Ramsar)||9,400||protected area overlaps with site||9,400|
|De Wieden II||Nature Reserve||285||protected area contained by site||285|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Forest||Alluvial and very wet forest||12%|
|Wetlands (inland)||Standing freshwater; Water fringe vegetation||73%|
|Artificial - terrestrial||Highly improved re-seeded landscapes||14%|
|Land-use||Extent (% of site)|
|nature conservation and research||62%|
Protection status National Partial International None4,991 ha of IBA covered by Nature Reserve (De Wieden, 4,991 ha). 285 ha of IBA covered by Nature Reserve (De Wieden II, 285 ha).
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Recommended citation BirdLife International (2016) Important Bird and Biodiversity Area factsheet: De Wieden. Downloaded from http://www.birdlife.org on 27/06/2016
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