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The site was identified as internationally important for bird conservation in 2007 because it was regularly supporting significant populations of the species listed below, meeting IBA criteria.

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

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Mute Swan Cygnus olor	LC	passage (2006)	2,000–2,600 individuals	B1i, C3
Whooper Swan Cygnus cygnus	LC	passage (2006)	150–300 individuals	B1i, C2
Barnacle Goose Branta leucopsis	LC	passage (2006)	150–300 individuals	C2, C6
Greylag Goose Anser anser	LC	non-breeding (2006)	14,000–15,500 individuals	A4i, B1i, C3
Bean Goose Anser fabalis	LC	passage (2006)	13,000–15,000 individuals	A4i, B1i, C3
Smew Mergellus albellus	LC	passage (2006)	50–100 individuals	C2, C6
Common Pochard Aythya ferina	VU	passage (2006)	10,000–13,000 individuals	B1i, C3
Red-necked Grebe Podiceps grisegena	LC	breeding (2006)	50–60 breeding pairs	B1i, C3
Common Crane Grus grus	LC	passage (2006)	4,000–6,000 individuals	A4i, B1i, C2
Eurasian Bittern Botaurus stellaris	LC	breeding (2006)	40–50 breeding pairs	B2, C2, C6
Western Marsh-harrier Circus aeruginosus	LC	breeding (1997)	40–50 breeding pairs	C6
White-tailed Sea-eagle Haliaeetus albicilla	LC	passage (2006)	10–15 individuals	C6
A4iv Species group - soaring birds/cranes	n/a	passage (2006)	4,000–6,000 individuals	B1iv, C5
A4iii Species group - waterbirds	n/a	passage (2006)	43,000–53,000 individuals	A4iii

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2007. The most recent assessment (2018) is shown below.

State (condition of the key species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Wetlands (inland)	good (>90%)	good (>90%)	favourable
Grassland	good (>90%)	good (>90%)	favourable

Pressure (threats to the key species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Biological resource use	happen­ing now	most of popul­ation/area (50–90%)	slow deteri­oration (1–10% over 3 gener­ations)	high
Agricultural expansion and intensification	happen­ing now	some of popul­ation/area (10–49%)	slow deteri­oration (1–10% over 3 gener­ations)	medium

Response (conservation actions taken for the key species and/or their habitats)
Designation	Planning	Action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A compre­hensive and appropriate manage­ment plan exists that aims to maintain or improve the popul­ations of qualify­ing bird species	The conservation measures needed for the site are being comprehensively and effectively implemented	high

Year	Protected Area	Designation (management category)	% coverage of IBA
2011	Tåkern	Naturreservat (V)	100

Habitat	% of IBA	Habitat detail
Wetlands (inland)	85	Standing freshwater; Water fringe vegetation
Forest	10	Broadleaved deciduous woodland; Native coniferous woodland
Grassland	5	Steppes and dry calcareous grassland

Land use	% of IBA
nature conservation and research	100
hunting	95
agriculture	10
forestry	10

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Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Lake Tåkern (Sweden). Downloaded from https://datazone.birdlife.org/site/factsheet/lake-tåkern-iba-sweden on 12/01/2025.