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

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Whooper Swan Cygnus cygnus	LC	winter (1996)	600 birds	B1i, B3, C2
Brent Goose Branta bernicla	LC	non-breeding (1994)	4,000 birds	A4i, B1i, C3
Common Eider Somateria mollissima	NT	non-breeding (1994)	15,000 birds	B1i, C3
Common Goldeneye Bucephala clangula	LC	non-breeding (1994)	3,050 birds	B1i, C3
Red-breasted Merganser Mergus serrator	LC	non-breeding (1994)	1,500–4,500 birds	A4i, B1i, C3
Tufted Duck Aythya fuligula	LC	non-breeding (1994)	13,100–20,000 birds	A4i, B1i, C3
Eurasian Coot Fulica atra	LC	non-breeding (1994)	15,000 birds	B1i, C3
Pied Avocet Recurvirostra avosetta	LC	breeding (1996)	170–180 pairs	B3
Mew Gull Larus canus	LC	breeding (1996)	1,750 pairs	B2
Arctic Tern Sterna paradisaea	LC	breeding (1996)	350 pairs	C6
A4iii Species group - waterbirds	n/a	winter (1994)	20,000-49,999 birds	A4iii, C4

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2000. The most recent assessment (2010) is shown below.

State (condition of the trigger species' populations)
Species	Actual vs Reference (units)	% remaining	Result
Barnacle Goose Branta leucopsis	358 / 358 (birds)	100	good
Spotted Crake Porzana porzana	3 / 4 (pairs)	75	moderate
Ruff Calidris pugnax	0 / 43 (nests)	0	very poor
Dunlin Calidris alpina	1 / 11 (pairs)	10	very poor
Mediterranean Gull Larus melanocephalus	1 / 1 (pairs)	100	good
Common Tern Sterna hirundo	2 / 57 (pairs)	4	very poor

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation (management category)	% coverage of IBA
1941	Vejlen Mose	Fredet ved afgørelse, exl. Kirkeomgivelser (V)	<1
1983	Monnet	Fredet ved afgørelse, exl. Kirkeomgivelser (IV)	<1
1992	Ærø Kommune	§3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv) (IV)	<1
1992	Svendborg Kommune	§3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv) (IV)	<1
1992	Langeland Kommune	§3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv) (IV)	<1
1994	Sydfynske Ø-hav	Baltic Sea Protected Area (Helcom) (UA)	99

Habitat	% of IBA	Habitat detail
Marine Neritic	85
Marine Coastal/Supratidal	minor (<10)
Marine Intertidal	minor (<10)

Land use	% of IBA
agriculture	50
hunting	50
nature conservation and research	10

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Sydfynske Ø-hav (Denmark). Downloaded from https://datazone.birdlife.org/site/factsheet/sydfynske-ø-hav-iba-denmark on 23/12/2024.