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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
A4iv Species group - soaring birds/cranes	n/a	passage	1993-1996	11,000 individuals	B1iv, C5

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

State (condition of the trigger species' populations)
Scientific name	Common name	Reference population	Actual population	Units	% of population remaining	Result
Cygnus olor	Mute Swan	174	174	individuals	100	favourable
Cygnus cygnus	Whooper Swan	221	221	individuals	100	favourable
Branta leucopsis	Barnacle Goose	1710	1710	individuals	100	favourable
Clangula hyemalis	Long-tailed Duck	4500	1700	individuals	38	very unfavourable
Porzana porzana	Spotted Crake	4	0	breeding pairs	0	very unfavourable
Recurvirostra avosetta	Pied Avocet	31	23	breeding pairs	75	near favourable
Sterna hirundo	Common Tern	8	8	breeding pairs	100	favourable
Lanius collurio	Red-backed Shrike	3	3	breeding pairs	100	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

Protected area (PA)	PA designation	PA area (ha)	Relationship of PA with IBA	Overlap of PA with IBA (ha)
Sydfynske Øhav	Site of Community Importance (Habitats Directive)	44,986	protected area contains site	4,980
Sydfynske Øhav	Special Protection Area (Birds Directive)	38,175	protected area is adjacent to site	0
Stubhaven Næs	Fredet ved afgørelse, exl. Kirkeomgivelser	4	protected area contained by site	0
South Funen sea with islands	Baltic Sea Protected Area (HELCOM)	44,986	protected area contains site	0
Marstal Bugt og den sydlige del af Langeland	Special Protection Area (Birds Directive)	4,984	protected area contained by site	4,980
Langeland Kommune	§3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv)	2,437	protected area overlaps with site	0

Habitat (IUCN level 1)	Habitat detail	Extent (% of site)
Forest	Broadleaved deciduous woodland	-
Grassland	Humid grasslands	-
Artificial/Terrestrial	Arable land	-
Marine Neritic		-
Marine Coastal/Supratidal		-

For more information about the IUCN Habitat classification, please click here.

Land-use	Extent (% of site)
agriculture	-
nature conservation and research	-
forestry	-
unknown	-

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Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Marstal Bugt and the coast of south-west Langeland. Downloaded from http://datazone.birdlife.org/site/factsheet/marstal-bugt-and-the-coast-of-south-west-langeland-iba-denmark on 24/09/2023.