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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
Griffon Vulture Gyps fulvus	LC	resident	2008	222-255 breeding pairs	B1iii, C2, 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 (2007) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Griffon Vulture Gyps fulvus	119	254	breeding pairs	100	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Residential and commercial development	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Invasive and other problematic species and genes	likely in short term (within 4 years)	some of area/population (10-49%)	moderate to rapid deterioration	medium
Transportation and service corridors	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Human intrusions and disturbance	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	likely in short term (within 4 years)	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Some of site covered (10-49%)	A management plan exists but it is out of date or not comprehensive	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	low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	Valderejo-Sobrón-Árcenako mendilerroa / Valderejo-Sobrón-Sierra de Árcena	Site of Community Importance (Habitats Directive)	26
1998	Montes Obarenes	Site of Community Importance (Habitats Directive)	61
2000	Montes Obarenes	Special Protection Area (Birds Directive)	56
2000	Ebro ibaia / Río Ebro	Site of Community Importance (Habitats Directive)	1
2000	Sobrón	Site of Community Importance (Habitats Directive)	23
2006	Montes Obarenes-San Zadornil	Parque Natural	50
2006	Valderejo-Sobrón-Árcenako mendilerroa / Valderejo-Sobrón-Sierra de Árcena	Special Protection Area (Birds Directive)	23

Habitat1	Habitat detail	% of IBA
Forest	Broadleaved deciduous woodland, Native coniferous woodland, Alluvial and very wet forest, Broadleaved evergreen woodland	65
Artificial/Terrestrial	Arable land, Forestry plantations	15
Shrubland	Heathland, Sclerophyllous scrub, garrigue and maquis	10
Wetlands (inland)	Rivers and streams	5
Caves and Subterranean Habitats (non-aquatic)	Caves	-
Rocky areas (eg. inland cliffs, mountain peaks)	Scree & boulders, Inland cliffs	-

1. IUCN Habitat classification.

Land use	% of IBA
hunting	80
agriculture	30
not utilised	25
forestry	20
tourism/recreation	10
water management	10

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Sobrón canyon (Spain). Downloaded from https://datazone.birdlife.org/site/factsheet/sobrón-canyon-iba-spain on 23/11/2024.