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Location Spain, Castilla y León
Central coordinates 5o 35.00' West  41o 10.00' North
IBA criteria A1, B2, C1, C2
Area 28,000 ha
Altitude 800 - 926m
Year of IBA assessment 2000


Site description An area of plains, north of Salamanca, dominated by non-irrigated cereal crops and patches of Quercus woodland.

Key Biodiversity This is an area important for steppic species.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Great Bustard Otis tarda resident  1997  73-150 breeding pairs  medium  A1, B2, C1, C2  Vulnerable 

IBA Monitoring

2008 very high not assessed negligible
Poor - based on little, or potentially unreliable/unrepresentative, data

Agriculture and aquaculture wood and pulp plantations (includes afforestation) - small-holder plantations happening now small area/few individuals (<10%) slow but significant deterioration low
Biological resource use hunting & collecting terrestrial animals - persecution/control happening now some of area/population (10-49%) very rapid to severe deterioration high
Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) slow but significant deterioration medium
Invasive & other problematic species, genes & diseases problematic native species/diseases - unspecified species happening now majority/most of area/population (50-90%) very rapid to severe deterioration very high
Pollution garbage & solid waste happening now some of area/population (10-49%) moderate to rapid deterioration high
Residential and commercial development housing and urban areas happening now small area/few individuals (<10%) no or imperceptible deterioration low
Transportation and service corridors roads and railroads happening now some of area/population (10-49%) very rapid to severe deterioration high

Artificial - terrestrial   0 0 moderate (70-90%) moderate (70-90%) unfavourable

Otis tarda Great Bustard 70 20 individuals 29 not assessed

Little/none of site covered (<10%)  No management planning has taken place  Very little or no conservation action taking place  negligible 


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved evergreen woodland  15%
Grassland Steppes and dry calcareous grassland  6%
Wetlands (inland) Rivers and streams  8%
Artificial - terrestrial Arable land; Perennial crops, orchards and groves  70%

Land use

Land-use Extent (% of site)
agriculture 65%
forestry 10%
hunting 30%
urban/industrial/transport 10%

Protection status National None International None

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Topas. Downloaded from on 28/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife