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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
European Storm-petrel Hydrobates pelagicus	LC	resident	1995	min 700 breeding pairs	B3, C6

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 (2008) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
European Storm-petrel Hydrobates pelagicus	700	600	breeding pairs	86	near favourable

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Forest	moderate (70-90%)	poor (40-69%)	very unfavourable
Marine Coastal/Supratidal	moderate (70-90%)	good (> 90%)	near favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Residential and commercial development	happening now	majority/most of area/population (50-90%)	very rapid to severe deterioration	very high
Pollution	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Agricultural expansion and intensification	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Natural system modifications	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Transportation and service corridors	happening now	whole area/population (>90%)	slow but significant deterioration	high
Human intrusions and disturbance	happening now	whole area/population (>90%)	slow but significant deterioration	high
Biological resource use	happening now	some of area/population (10-49%)	slow but significant deterioration	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Some of site covered (10-49%)	Not assessed	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	low

Year	Protected Area	Designation	% overlap with IBA
1997	Rio Deva	Site of Community Importance (Habitats Directive)	<1
2001	Bufones de Arenillas	Monumento Natural	<1
2001	Playa de Cobijeru	Monumento Natural	<1
2001	Playa de Gulpiyuri	Monumento Natural	<1
2001	Bufón de Santiuste	Monumento Natural	<1
2001	Yacimiento de Icnitas de Asturias	Monumento Natural	<1
2003	Ría de Ribadesella-Ría de Tinamayor	Site of Community Importance (Habitats Directive)	57
2003	Ría de Ribadesella-Ría de Tinamayor	Special Protection Area (Birds Directive)	19
2006	LIC-RIO DEVA	Zona de la Red Ecológica Europea Natura 2000	<1

Habitat1	Habitat detail	% of IBA
Artificial/Terrestrial	Forestry plantations	26
Forest	Broadleaved deciduous woodland	26
Grassland		-
Marine Coastal/Supratidal		-
Marine Intertidal		-
Marine Neritic		-
Shrubland		-

1. IUCN Habitat classification.

Land use	% of IBA
not utilised	26
forestry	26
fisheries/aquaculture	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Ribadesella-Tina Mayor (Spain). Downloaded from https://datazone.birdlife.org/site/factsheet/ribadesella-tina-mayor-iba-spain on 23/11/2024.