ES030
Oña and Tesla mountain ranges


IBA Criteria

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
Egyptian Vulture Neophron percnopterus EN breeding 2008 16-17 breeding pairs A1, B2, C1, C2
Bonelli's Eagle Aquila fasciata LC resident 2008 1-3 breeding pairs C2, C6
Red-billed Chough Pyrrhocorax pyrrhocorax LC resident 2011 300-350 breeding pairs B2, C2, C6

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


IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2007 high not assessed low
Was the whole site covered? Yes State assessed by unset
Accuracy of information poor

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Energy production and mining mining and quarrying past (and unlikely to return) and no longer limiting some of area/population (10-49%) no or imperceptible deterioration low
Energy production and mining renewable energy happening now some of area/population (10-49%) slow but significant deterioration medium
Pollution excess energy - noise pollution likely in short term (within 4 years) some of area/population (10-49%) very rapid to severe deterioration high
Transportation and service corridors roads and railroads likely in short term (within 4 years) some of area/population (10-49%) very rapid to severe deterioration high

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) No management plan exists but the management planning process has begun Not assessed low
For more information about IBA monitoring please click here

IBA Protection

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Sierra de la Tesla-Valdivielso - ZEPA Special Protection Area (Birds Directive) 21,272 protected area contained by site 21,231
Sierra De La Tesla-Valdivielso Site of Community Importance (Habitats Directive) 25,424 protected area overlaps with site 19,079
Riberas Del Río Oca y Afluentes Site of Community Importance (Habitats Directive) 569 protected area overlaps with site 52
Riberas Del Río Nela y Afluentes Site of Community Importance (Habitats Directive) 764 protected area is adjacent to site 0
Montes Obarenes-San Zadornil Parque Natural 33,068 protected area overlaps with site 0
Montes Obarenes Site of Community Importance (Habitats Directive) 43,074 protected area overlaps with site 0
Montes Obarenes Special Protection Area (Birds Directive) 43,074 protected area overlaps with site 13,873
Hoces del Alto Ebro y Rudrón - ZEPA Special Protection Area (Birds Directive) 51,480 protected area is adjacent to site 0
Hoces Del Alto Ebro y Rudrón Site of Community Importance (Habitats Directive) 46,276 protected area is adjacent to site 0

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland, Mixed woodland, Alluvial and very wet forest -
Shrubland Scrub, Heathland -
Wetlands (inland) Rivers and streams -
Rocky areas (eg. inland cliffs, mountain peaks) Inland cliffs -
Artificial/Terrestrial Arable land, Perennial crops, orchards and groves, Forestry plantations -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
forestry -
hunting -
not utilised -
For further information about the land use classification please click here.


Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Oña and Tesla mountain ranges. Downloaded from http://www.birdlife.org on 26/11/2020.