Vresen and sea area between Fyn and Langeland

IBA Justification

The site was identified as important in 2000 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):
Species Current IUCN Red List Category Season Year(s) Population estimate at site IBA criteria met
Common Eider Somateria mollissima NT winter 1993 7,000 individuals B1i, C3
A4iii Species group - waterbirds n/a unknown - 20,000 individuals A4iii, C4

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2000).

IBA Conservation

IBA conservation assessment
Year of assessment (most recent) State (condition) Pressure (threat) Response (action)
2009 very unfavourable not assessed not assessed
Was the whole site assessed? State assessed by Accuracy of information
yes population good

State (condition of the trigger species' populations)
Scientific name Common name Reference population Actual population Units % of population remaining Result
Somateria mollissima Common Eider 30940 7000 individuals 23 very unfavourable
Phalacrocorax carbo Great Cormorant 48 45 breeding pairs 94 favourable

Response (conservation actions taken for the trigger species and/or their habitats)
Protected-area designation Management planning Other conservation action Result
Not assessed Not assessed Not assessed not assessed
For more information about IBA conservation status, please click here

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
Vresen og havet mellem Fyn og Langeland Special Protection Area (Birds Directive) 3,513 is identical to site 3,470
Vresen Site of Community Importance (Habitats Directive) 62,047 protected area contains site 3,470
Centrale Storebælt og Vresen Baltic Sea Protected Area (HELCOM) 62,336 protected area contains site 0


Habitat (IUCN level 1) Habitat detail Extent (% of site)
Marine Neritic -
For more information about the IUCN Habitat classification, please click here.

Land use

Land-use Extent (% of site)
unknown -

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Vresen and sea area between Fyn and Langeland. Downloaded from on 05/10/2023.