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Location Netherlands, Friesland
Central coordinates 6o 15.00' East  53o 30.00' North
IBA criteria A4i, A4iii, B1i, B2, B3, C2, C3, C4, C6
Area 2,800 ha
Altitude 0 - 15m
Year of IBA assessment 2000

Vogelbescherming Nederland

Site description The site comprises the main part of the easternmost of the five inhabited barrier islands in the Wadden Sea (adjacent to site 001), but excludes the village and the adjoining part of grassland polder. The total length is 14 km, with a maximum width of 2,500 m. Habitats include beaches, shifting and fixed sand-dunes with herbaceous vegetation or crowberry Empetrum nigrum, humid dune-slacks, cord-grass Spartina swards, saltmarshes, mudflats, freshwater marsh and improved grassland. Land-uses include scattered houses, recreational facilities, dairy farming and groundwater abstraction.

Key Biodiversity The raised saltmarshes are an important spring feeding area for Branta bernicla and the grassland polder is also a feeding area for Branta leucopsis. The area is an important high-tide roost for tens of thousands of waterbirds that feed in the Wadden Sea. Platalea leucorodia established a breeding colony in 1994.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Northern Pintail Anas acuta non-breeding  1991  606 individuals  good  B1i, C3  Least Concern 
Barnacle Goose Branta leucopsis winter  1990  4,883 individuals  medium  A4i, B1i, B2, C2  Least Concern 
Common Shelduck Tadorna tadorna non-breeding  1991  3,202 individuals  good  B1i, C3  Least Concern 
Circus cyaneus breeding  1992  14 breeding pairs  medium  C6  Not Recognised 
Haematopus ostralegus non-breeding  1991  28,279 individuals  good  A4i, B1i, C3  Not Recognised 
Grey Plover Pluvialis squatarola non-breeding  1991  3,136 individuals  good  A4i, B1i, C3  Least Concern 
Bar-tailed Godwit Limosa lapponica winter  1991  1,348 individuals  good  B1i, B2, C2, C6  Least Concern 
Eurasian Curlew Numenius arquata non-breeding  1991  6,856 individuals  good  A4i, B1i, C3  Near Threatened 
Eurasian Curlew Numenius arquata winter  1991  2,788 individuals  good  B2  Near Threatened 
Red Knot Calidris canutus winter  1990  2,590 individuals  medium  B2  Least Concern 
Red Knot Calidris canutus passage  1991  24,936 individuals  good  A4i, B1i, C3  Least Concern 
Dunlin Calidris alpina non-breeding  1991  23,237 individuals  good  A4i, B1i, C3  Least Concern 
Mew Gull Larus canus breeding  1992  463 breeding pairs  medium  B2  Least Concern 
Lesser Black-backed Gull Larus fuscus breeding  1992  1,561 breeding pairs  medium  B1i, B3, C3  Least Concern 
Short-eared Owl Asio flammeus breeding  1992  3 breeding pairs  medium  C6  Least Concern 
Red-backed Shrike Lanius collurio breeding  1992  5 breeding pairs  medium  C6  Least Concern 
A4iii Species group - waterbirds non-breeding  1991  50,000-99,999 individuals  unknown  A4iii, C4   
A4iii Species group - waterbirds passage  1991  20,000-49,999 individuals  unknown  A4iii, C4   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Schiermonnikoog National Park 6,145 protected area contains site 2,800  
Schiermonnikoog, Nationaal Park Nature Reserve 1,889 protected area contained by site 1,889  
The Wadden Sea World Heritage Site 968,393 protected area overlaps with site 63  
Waddeneilanden,Noordzeekustzone,Breebaart Wetlands of International Importance (Ramsar) 135,000 protected area overlaps with site 0  
Waddenzee (Wadden Sea) Wetlands of International Importance (Ramsar) 249,998 protected area overlaps with site 855  
Waddenzee I Natural Monument 125,000 protected area overlaps with site 1,500  


IUCN habitat Habitat detail Extent (% of site)
Coastline Salt marshes; Sand dunes & beaches  88%
Artificial - terrestrial Highly improved re-seeded landscapes  8%

Land use

Land-use Extent (% of site)
agriculture 8%
fisheries/aquaculture 5%
water management 8%
hunting 35%
nature conservation and research 67%
tourism/recreation 50%

Protection status National High International Partial1,500 ha of IBA covered by Natural Monument (Waddenzee I, 125,000 ha). 1,889 ha of IBA covered by Nature Reserve (Schiermonnikoog, 1,889 ha). 2,800 ha of IBA covered by National Park (Schiermonnikoog, 5,400 ha). 855 ha of IBA covered by Special Protection Area (Waddenzee, `250,000 ha' [official, incorrect figure]). 855 ha of IBA covered by Ramsar Site (Waddenzee, `250,000 ha' [official, incorrect figure]).

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Recommended citation  BirdLife International (2015) Important Bird Areas factsheet: Schiermonnikoog. Downloaded from on 01/09/2015

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