Ria Formosa - Oceânica

IBA Criteria

Year of most recent IBA criteria assessment: 2008

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Little Tern Sternula albifrons LC breeding 2003-2007 170-334 breeding pairs B1ii, C2

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 Protection

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Ria Formosa/Castro Marim Site of Community Importance (Habitats Directive) 17,520 protected area overlaps with site 0
Ria Formosa Nature Park 17,901 protected area contained by site 0
Ria Formosa Special Protection Area (Birds Directive) 2,165 protected area overlaps with site 10,456


IUCN Habitat Habitat detail Extent (% of site)
Sea Sea inlets and coastal features -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
nature conservation and research -
fisheries/aquaculture -
tourism/recreation -
military -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Ria Formosa - Oceânica. Downloaded from on 31/03/2020.