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Location Portugal, Alentejo
Central coordinates 7o 40.00' West  39o 10.00' North
IBA criteria A1, B2, C1, C6
Area 1,317 ha
Altitude 200 - 300m
Year of IBA assessment 2002

Sociedade Portuguesa para o Estudo das Aves

Site description Steppic agricultural land of wheat-fields and dry pasture, with scattered evergreen oak Quercus woodland.

Key Biodiversity Important for three species of steppic habitats.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Great Bustard Otis tarda resident  2002  16-32 individuals  good  A1, C1  Vulnerable 
Little Bustard Tetrax tetrax resident  1996  100-150 individuals  good  A1, C1  Near Threatened 
Burhinus oedicnemus resident  2001  20-30 breeding pairs  medium  B2, C6  Not Recognised 


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved evergreen woodland  10%
Artificial - terrestrial Arable land; Perennial crops, orchards and groves  90%

Land use

Land-use Extent (% of site)
forestry 10%
agriculture 90%

Protection status National None International None

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Alter do Chão. Downloaded from on 26/10/2016

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