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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
Caspian Tern Hydroprogne caspia	LC	passage (1996)	50–300 birds	A4i, B1i, C2

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2000. The most recent assessment (2018) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Wetlands (inland)	good (>90%)	moderate (70–90%)	moderate

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Human intrusions and disturbance	likely in long term (>4 years)	some of popul­ation/area (10–49%)	moderate decline (10–30% over 3 gener­ations)	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Little/none of area covered (<10%)	No management planning has taken place	Very little or no conservation action taking place	very low

Year	Protected Area	Designation (management category)	% coverage of IBA
1900	Grundholmarna	Naturreservat (III)	<1

Habitat	% of IBA	Habitat detail
Wetlands (inland)	100	Standing freshwater
Artificial/Terrestrial	minor (<10)	Arable land; Other urban and industrial areas
Forest	minor (<10)

Land use	% of IBA
tourism/recreation	100

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Storhjälmaren (Sweden). Downloaded from https://datazone.birdlife.org/site/factsheet/lake-storhjälmaren-iba-sweden on 06/12/2024.