• Summary
• Text account
• Data table and detailed info
• Map
• 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
Northern Gannet Morus bassanus	LC	winter	1993	14,000 individuals	A4ii, B1ii, C3
Arctic Herring Gull Larus smithsonianus	LC	winter	1993	32,000 individuals	A4i, B1i
Great Skua Catharacta skua	LC	passage	1993	3,300 individuals	A4ii, B1ii, C3
Razorbill Alca torda	LC	winter	1993	45,000 individuals	A4ii, B1ii, C3
Little Auk Alle alle	LC	winter	1993	705,000 individuals	A4ii, B1ii, C3
Common Murre Uria aalge	LC	non-breeding	1993	46,300 individuals	A4ii, B1ii, C3
A4iii Species group - seabirds	n/a	winter	1993	500,000-999,999 individuals	A4iii, C4
A4iii Species group - waterbirds	n/a	winter	1993	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 (2009) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Northern Gannet Morus bassanus	14,000	14,000	individuals	100	favourable
Larus argentatus	32,000	32,000	individuals	100	favourable
Great Skua Catharacta skua	3,300	3,300	individuals	100	favourable
Razorbill Alca torda	120,000	120,000	individuals	100	favourable
Little Auk Alle alle	90,000	90,000	individuals	100	favourable
Common Murre Uria aalge	205,000	205,000	individuals	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
1997	Læsø Trindel og Tønneberg Banke	Site of Community Importance (Habitats Directive)	1
1997	Herthas Flak	Site of Community Importance (Habitats Directive)	<1
1998	Skagens Gren og Skagerak	Site of Community Importance (Habitats Directive)	20
2002	Lønstrup Rødgrund	Site of Community Importance (Habitats Directive)	<1
2002	Knudegrund	Site of Community Importance (Habitats Directive)	<1
2005	Læsø Trindel/Tønneberg Bank	Baltic Sea Protected Area (HELCOM)	1
2005	Hertha's Flak	Baltic Sea Protected Area (HELCOM)	<1
2007	Læsø Trindel og Tønneberg Banke	Marine Protected Area (OSPAR)	1
2007	Lønstrup Rødgrund	Marine Protected Area (OSPAR)	<1
2007	Herthas Flak	Marine Protected Area (OSPAR)	<1
2007	Knudegrund	Marine Protected Area (OSPAR)	<1
2007	Skagen Gren	Fredet ved afgørelse, exl. Kirkeomgivelser	<1
2009	Skagens Gren og Skagerrak	Marine Protected Area (OSPAR)	20
2009	Gule Rev	Marine Protected Area (OSPAR)	4
2009	Gule Rev	Site of Community Importance (Habitats Directive)	4
2009	Store Rev	Marine Protected Area (OSPAR)	1
2009	Store Rev	Site of Community Importance (Habitats Directive)	1

Habitat1	Habitat detail	% of IBA
Marine Neritic		100

1. IUCN Habitat classification.

Land use	% of IBA
unknown	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Skagerrak-Southwest Norwegian trench (Denmark). Downloaded from https://datazone.birdlife.org/site/factsheet/skagerrak-southwest-norwegian-trench-iba-denmark on 23/11/2024.