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The site was identified as internationally important for bird conservation in 2001 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
Long-tailed Duck Clangula hyemalis	VU	passage (1988–1995)	837,000 birds	A4i, B1i, C3
Velvet Scoter Melanitta fusca	VU	passage (1992–1995)	240,000 birds	A4i, B1i, C3
Common Scoter Melanitta nigra	LC	passage (1992–1995)	215,000 birds	A4i, B1i, C3
Red-breasted Merganser Mergus serrator	LC	passage (1992–1993)	3,000 birds	A4i, B1i, C3
Red-necked Grebe Podiceps grisegena	LC	passage (1992–1993)	1,275 birds	A4i, B1i, C3
Great Crested Grebe Podiceps cristatus	LC	passage (1992–1993)	4,180 birds	A4i, B1i, C3
Horned Grebe Podiceps auritus	VU	passage (1992–1993)	1,225 birds	A4i, B1i, C3
Black Guillemot Cepphus grylle	LC	passage (1988–1993)	3,975 birds	A4ii, B1ii, C3
A4iii Species group - waterbirds	n/a	passage (1995)	1,000,000-2,499,999 birds	A4iii, C4

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2001. The most recent assessment (2015) is shown below.

State (condition of the trigger species' populations)
Species	Actual vs Reference (units)	% remaining	Result
Long-tailed Duck Clangula hyemalis	8,000 / 68,000 (birds)	12	very poor

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Energy production and mining	happe­ning now	most of popul­ation/area (50–90%)	moderate decline (10–30% over 3 gener­ations)	high
Human intrusions and disturbance	happe­ning now	some of popul­ation/area (10–49%)	moderate decline (10–30% over 3 gener­ations)	high

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
1936	Strandmarken, Dueodde	Fredet ved afgørelse, exl. Kirkeomgivelser (V)	<1
1977	Læså, Nedre	Fredet ved afgørelse, exl. Kirkeomgivelser (V)	<1
1979	Risebæk	Fredet ved afgørelse, exl. Kirkeomgivelser (V)	<1
1992	Bornholms Regionskommune	§3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv) (IV)	<1

Habitat	% of IBA	Habitat detail
Marine Neritic	100

Land use	% of IBA
urban/industrial/transport	-
fisheries/aquaculture	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Rønne Banke (Denmark). Downloaded from https://datazone.birdlife.org/site/factsheet/rønne-banke-iba-denmark on 23/12/2024.