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• Text account
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• Reference and further resources

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') at the site:

Species	Red List1	Season	Year(s)	Size	IBA criteria
Greylag Goose Anser anser	LC	passage	1994	6,700 individuals	A4i, B1i, C3
Common Pochard Aythya ferina	VU	non-breeding	1994	15,765 individuals	A4i, B1i, C3
Tufted Duck Aythya fuligula	LC	winter	1994	23,045 individuals	A4i, B1i, C3
Gadwall Mareca strepera	LC	passage	1996	328 individuals	B1i, C3
Eurasian Bittern Botaurus stellaris	LC	breeding	1995	35 breeding pairs	B2, C2, C6
Great Cormorant Phalacrocorax carbo	LC	breeding	1995	2,250 breeding pairs	A4i, B1i, C3
White-tailed Sea-eagle Haliaeetus albicilla	LC	breeding	1997	1 breeding pairs	C6
A4iii Species group - waterbirds	n/a	winter	1991	20,000-49,999 individuals	A4iii, C4

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2000) may differ.

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	Reference	Actual	Units	% remaining	Result
Bean Goose Anser fabalis	700	700	individuals	100	favourable
Goosander Mergus merganser	2,165	260	individuals	13	very unfavourable
Great Cormorant Phalacrocorax carbo	3,375	1,469	breeding pairs	44	unfavourable
European Honey-buzzard Pernis apivorus	7	3	breeding pairs	43	unfavourable
Common Kingfisher Alcedo atthis	1	1	breeding pairs	100	favourable

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation	% overlap with IBA
-	Maribosøerne	Game Reserve	33
1954	Maribo Søerne	Fredet ved afgørelse, exl. Kirkeomgivelser	32
1957	Maribo Soerne	Major Conservation Area	31
1977	Maribo Lakes	Ramsar Site, Wetland of International Importance	100
1983	Maribosøerne	Special Protection Area (Birds Directive)	97
1992	Lolland Kommune	§3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv)	1
1992	Sorø Kommune	§3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv)	<1
1997	Maribosøerne	Site of Community Importance (Habitats Directive)	79

Habitat1	Habitat detail	% of IBA
Wetlands (inland)	Standing freshwater, Water fringe vegetation	45
Artificial/Terrestrial		30
Forest	Broadleaved deciduous woodland	25

1. IUCN Habitat classification.

Land use	% of IBA
nature conservation and research	100
agriculture	30
forestry	25

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Maribo lakes (Denmark). Downloaded from https://datazone.birdlife.org/site/factsheet/maribo-lakes-iba-denmark on 22/11/2024.