De Wieden

IBA Criteria

Year of most recent IBA criteria assessment: 2016

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Greater White-fronted Goose Anser albifrons LC non-breeding 2011-2015 17,728-27,241 individuals B1i, C3
Common Pochard Aythya ferina VU breeding 2011-2015 21-34 breeding pairs A1, B2, C1
Spotted Crake Porzana porzana LC breeding 2011-2015 15-20 breeding pairs C6
Baillon's Crake Zapornia pusilla LC breeding 2011-2015 2-3 breeding pairs C6
White Stork Ciconia ciconia LC breeding 2009-2014 18 breeding pairs C6
Eurasian Spoonbill Platalea leucorodia LC breeding 2009-2014 72 breeding pairs B1i
Eurasian Bittern Botaurus stellaris LC breeding 2011-2015 20-28 breeding pairs C6
Purple Heron Ardea purpurea LC breeding 2011-2015 101-117 breeding pairs C6
Great White Egret Ardea alba LC breeding 2011-2015 3-6 breeding pairs C6
Black Tern Chlidonias niger LC breeding 2011-2015 140-187 breeding pairs C6
Short-eared Owl Asio flammeus LC breeding 2011-2015 1-3 breeding pairs C6
Sedge Warbler Acrocephalus schoenobaenus LC breeding 2011-2015 3,278-4,701 breeding pairs B3
Savi's Warbler Locustella luscinioides LC breeding 2011-2015 339-548 breeding pairs B3
A4iii Species group - waterbirds n/a non-breeding 2011-2015 32,898-48,966 individuals A4iii, C4

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2017 not assessed unfavourable low
Was the whole site covered? Yes State assessed by Population
Accuracy of information good

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Zwarte Meer Ramsar Site, Wetland of International Importance 2,050 protected area is adjacent to site 0
Weerribben-Wieden Nationaal Park 10,270 protected area overlaps with site 0
De Wieden II Nature Reserve 285 protected area contained by site 285
De Wieden Nature Reserve with Management Subsidy 4,216 protected area contained by site 4,991
De Wieden Site of Community Importance (Habitats Directive) 7,156 protected area contained by site 7,534
De Wieden Special Protection Area (Birds Directive) 9,018 is identical to site 9,320
De Wieden Ramsar Site, Wetland of International Importance 9,400 protected area overlaps with site 9,400
De Wieden Natuurbeschermingswet 9,018 is identical to site 0


IUCN Habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest -
Wetlands (inland) Standing freshwater, Water fringe vegetation -
Artificial/Terrestrial Highly improved re-seeded landscapes -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
other -
fisheries/aquaculture -
water management -
nature conservation and research -
tourism/recreation -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: De Wieden. Downloaded from on 27/03/2023.