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The site was identified as important in 2011 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
Eurasian Curlew Numenius arquata	NT	winter	2008	min 219 individuals	A1, C1

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2011) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2011. The most recent assessment (2007) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
European Shag Gulosus aristotelis	26	2	breeding pairs	8	very unfavourable
Larus cachinnans	500	32	breeding pairs	7	very unfavourable

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

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Most of site (50-90%) covered (including the most critical parts for important bird species)	No management plan exists but the management planning process has begun	Some limited conservation initiatives are in place	low

Year	Protected Area	Designation	% overlap with IBA
1986	Dunas de Liencres	Parque Natural	100
1988	Oyambre	Parque Natural	61
1997	Rias occidentales y Duna de Oyambre	Site of Community Importance (Habitats Directive)	26
2006	LIC-RIAS OCCIDENTALES Y DUNA DE OYAMBRE	Zona de la Red Ecológica Europea Natura 2000	42

Habitat1	Habitat detail	% of IBA
Marine Coastal/Supratidal		-
Marine Intertidal		-
Marine Neritic		-

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	80
fisheries/aquaculture	10
not utilised	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Tina Menor-Sarnosa island-Oyambre (Spain). Downloaded from https://datazone.birdlife.org/site/factsheet/tina-menor-sarnosa-island-oyambre-iba-spain on 24/11/2024.