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Year of most recent IBA criteria assessment: 2011

Populations of IBA trigger species

Species	Current IUCN Red List Category	Season	Year(s) of estimate	Population estimate	IBA Criteria Triggered
Barbary Partridge Alectoris barbara	LC	resident	2009	15-30 breeding pairs	B2, C2
Cory's Shearwater Calonectris borealis	LC	breeding	2007	max 300 breeding pairs	B2

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

Threats to the site (pressure)
Threat Level 1	Threat Level 2	Timing	Scope	Severity	Result
Agricultural expansion and intensification	livestock farming and ranching (includes forest grazing) - small-holder grazing, ranching or farming	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Agricultural expansion and intensification	marine and freshwater aquaculture - subsistence/artisinal aquaculture	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Biological resource use	fishing & harvesting aquatic resources - unintentional effects: subsistence/small scale	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Climate change and severe weather	drought	likely in short term (within 4 years)	whole area/population (>90%)	slow but significant deterioration	high
Climate change and severe weather	habitat shifting and alteration	likely in long term (beyond 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
Energy production and mining	mining and quarrying	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Human intrusions and disturbance	recreational activities	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Invasive and other problematic species and genes	invasive non-native/alien species/diseases - named species	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Invasive and other problematic species and genes	problematic native species/diseases - named species	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Pollution	excess energy - light pollution	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Pollution	garbage & solid waste	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Residential and commercial development	housing and urban areas	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Residential and commercial development	tourism and recreation areas	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Transportation and service corridors	roads and railroads	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high

Condition of key/trigger populations (state)
Scientific	Common	TargetPop	ActualPop	Units	Remaining	Result
Alectoris barbara	Barbary Partridge	6	6	breeding pairs	100	favourable
Apus unicolor	Plain Swift	50	50	breeding pairs	100	favourable
Calonectris diomedea		60	60	breeding pairs	100	favourable
Burhinus oedicnemus		10	10	breeding pairs	100	favourable
Falco tinnunculus	Common Kestrel	10	10	breeding pairs	100	favourable
Lanius excubitor		13	13	breeding pairs	100	favourable
Sylvia conspicillata	Spectacled Warbler	30	30	breeding pairs	100	favourable
Anthus berthelotii	Berthelot's Pipit	50	50	breeding pairs	100	favourable
Bucanetes githagineus	Trumpeter Finch	30	30	breeding pairs	100	favourable

Conservation actions taken at site (response)
Conservation Designation	Management Planning	Conservation Action	Result
Most of site (50-90%) covered (including the most critical parts for important bird species)	A management plan exists but it is out of date or not comprehensive	Some limited conservation initiatives are in place	low

For more information about IBA monitoring please click here

Protection status:

Protected Area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
Rasca y Guaza	Special Protection Area (Birds Directive)	1,030	protected area contained by site	993
Montaña de Guaza	Monumento Natural	718	protected area contained by site	0
Montaña de Guaza	Natural Monument	726	protected area contained by site	726
Malpaís de La Rasca	Reserva Natural Especial	313	protected area contained by site	0
Malpaís de la Rasca	Special Nature Reserve	315	protected area contained by site	315
Malpaís de la Rasca	Site of Community Importance (Habitats Directive)	313	protected area contained by site	305
Franja marina Teno-Rasca	Site of Community Importance (Habitats Directive)	69,490	protected area is adjacent to site	0

The local conservation groups below are working to support conservation at this IBA.

Name	Year formed
Ayuntamiento de Arona	0
Centro de Recuperación de Fauna Silvestre (Cabildo)	0
Oficina Voluntariado Ambiental (Cabildo)	0

For more information on BirdLife's work with Local conservation groups please click here.

IUCN Habitat	Habitat detail	Extent (% of site)
Shrubland		-
Grassland	Steppes and dry calcareous grassland	-
Desert	Semidesert	-
Rocky areas (eg. inland cliffs, mountain peaks)	Inland cliffs	-
Coastline	Shingle & stony beaches, Sea cliffs and rocky shores	-
Artificial/Terrestrial	Arable land	-

For further information about the habitat classification please click here.

Land-use	Extent (% of site)
agriculture	-
tourism/recreation	-

For further information about the land use classification please click here.

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Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Rasca lava fields-Guaza mountain-Las Mesas plain. Downloaded from http://www.birdlife.org on 11/04/2021.