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The site was identified as important in 2016 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
Arctic Tern Sterna paradisaea	LC	breeding	2009-2014	min 43 breeding pairs	C6
Western Marsh-harrier Circus aeruginosus	LC	breeding	2011-2015	36-40 breeding pairs	C6
Hen Harrier Circus cyaneus	LC	breeding	2011-2015	1-3 breeding pairs	C6

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2016) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2016. The most recent assessment (2018) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Climate change and severe weather	happening now	majority/most of area/population (50-90%)	very rapid to severe deterioration	very high
Invasive and other problematic species and genes	happening now	some of area/population (10-49%)	very rapid to severe deterioration	high
Human intrusions and disturbance	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Agricultural expansion and intensification	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Natural system modifications	likely in short term (within 4 years)	small area/few individuals (<10%)	moderate to rapid deterioration	low
Pollution	happening now	small area/few individuals (<10%)	moderate to rapid deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other 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	Some limited conservation initiatives are in place	medium

Year	Protected Area	Designation	% overlap with IBA
-	Terschelling (excl. Boschplaat)	Nature Reserve	100
1986	Waddensea Area	UNESCO-MAB Biosphere Reserve	8
1993	Waddenzee II	Natural Monument	4
1996	Duinen Terschelling	Special Protection Area (Birds Directive)	100
2000	Duinen Terschelling	Ramsar Site, Wetland of International Importance	100
2002	Duinen Terschelling	Site of Community Importance (Habitats Directive)	100
2009	Duinen Terschelling	Natuurbeschermingswet	100

Habitat1	Habitat detail	% of IBA
Artificial/Terrestrial	Forestry plantations	8
Marine Coastal/Supratidal		major (>10)
Marine Intertidal		major (>10)

1. IUCN Habitat classification.

Land use	% of IBA
hunting	100
nature conservation and research	100
tourism/recreation	50
agriculture	5

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Duinen Terschelling (Netherlands). Downloaded from https://datazone.birdlife.org/site/factsheet/duinen-terschelling-iba-netherlands on 23/11/2024.