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Location Denmark, Sønderjyllands Amtskommune
Central coordinates 8o 32.00' East  55o 3.00' North
IBA criteria A4i, A4iii, B1i, B2, C2, C3, C4
Area 7,010 ha
Altitude 0 - 20m
Year of IBA assessment 2000

Dansk Ornitologisk Forening

Site description Rømø is an island in the Wadden Sea, surrounded by extensive stretches (1-3 km wide) of flat, very sparsely vegetated sand just above the high tide line. Terrestrial vegetation consists of dunes, heathland, marshes, meadows and small plantations, mainly of Pinus mugo.

Key Biodiversity Several species listed on Annex I of the EC Birds Directive are believed to breed at the site, including Circus aeruginosus, C. cyaneus, C. pygargus, Recurvirostra avosetta, Gelochelidon nilotica, Sterna hirundo and S. paradisaea, although there are no recent data available for breeding gulls and terns.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Northern Pintail Anas acuta passage  1983  5,000 individuals  B1i, C3  Least Concern 
Brent Goose Branta bernicla passage  1983  6,000 individuals  good  A4i, B1i, C3  Least Concern 
Eurasian Wigeon Mareca penelope passage  1983  28,000 individuals  A4i, B1i, C3  Least Concern 
Northern Shoveler Spatula clypeata passage  1983  2,000 individuals  good  B1i, C3  Least Concern 
Common Teal Anas crecca passage  1983  11,000 individuals  B1i, C3  Least Concern 
Haematopus ostralegus passage  1983  13,800 individuals  good  A4i, B1i, C3  Not Recognised 
Common Redshank Tringa totanus breeding  1996  128 breeding pairs  good  B2  Least Concern 
Common Redshank Tringa totanus passage  1983  2,200 individuals  good  B1i, C3  Least Concern 
Bar-tailed Godwit Limosa lapponica passage  1983  5,400 individuals  good  A4i, B1i, C2  Near Threatened 
Dunlin Calidris alpina passage  1983  32,500 individuals  good  A4i, B1i, C3  Least Concern 
A4iii Species group - waterbirds passage  1983  50,000-99,999 individuals  unknown  A4iii, C4   

IBA Monitoring

2010 not assessed very unfavourable not assessed
Good - based on reliable and complete / representative data

Branta leucopsis Barnacle Goose 3000 3000 individuals 100 favourable
Tadorna tadorna Common Shelduck 4000 1100 individuals 28 very unfavourable
Somateria mollissima Common Eider 2660 2660 individuals 100 favourable
Botaurus stellaris Eurasian Bittern 5 5 breeding pairs 100 favourable
Pluvialis apricaria Eurasian Golden Plover 18000 18000 individuals 100 favourable
Pluvialis squatarola Grey Plover 1500 127 individuals 9 very unfavourable
Numenius arquata Eurasian Curlew 3140 3140 individuals 100 favourable
Tringa nebularia Common Greenshank 200 200 individuals 100 favourable
Calidris canutus Red Knot 20000 20000 individuals 100 favourable
Calidris alba Sanderling 1576 1576 individuals 100 favourable
Calidris pugnax Ruff 55 4 breeding pairs 8 very unfavourable
Larus argentatus 17000 13000 individuals 77 near favourable
Larus canus Mew Gull 8000 8000 individuals 100 favourable
Larus marinus Great Black-backed Gull 1000 600 individuals 60 unfavourable
Larus ridibundus Black-headed Gull 1500 600 individuals 40 unfavourable
Sternula albifrons Little Tern 162 43 breeding pairs 27 very unfavourable
Asio flammeus Short-eared Owl 5 0 breeding pairs 0 very unfavourable

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Vadehavet (Wadden Sea) Wetlands of International Importance (Ramsar) 150,482 protected area contains site 7,010  


IUCN habitat Habitat detail Extent (% of site)
Shrubland Heathland  15%
Grassland Humid grasslands  20%
Coastline Sand dunes & beaches  55%
Unknown   10%

Land use

Land-use Extent (% of site)
unknown -

Protection status National Partial International High7,010 ha of IBA covered by Special Protection Area (Rømø, 7,010 ha). 7,010 ha of IBA covered by Ramsar Site (Vadehavet (Wadden Sea), 140,830 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Rømø. Downloaded from on 28/10/2016

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