Ria de Aveiro

Country/territory: Portugal

IBA Criteria met: A4i, A4iii, B1i, B2, B3, C2, C3, C4, C6 (2002)
For more information about IBA criteria please click here

Area: 51,378 ha

Sociedade Portuguesa para o Estudo das Aves
Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2005 low not assessed not assessed
For more information about IBA monitoring please click here

Site description
This site, located in the west and north-west of Portugal, includes a large estuarine area, salinas, freshwater marshes and alluvial forest associated with the River Vouga and its main tributaries, and shallower coastal waters offshore (to a depth of 20 m).

Key biodiversity
The site holds 20,000 or more wintering waterbirds on a regular basis, with important congregations of sea-duck offshore (Melanitta nigra) and waders on the intertidal flats (notably Calidris alpina). The freshwater marshes and estuarine areas support important breeding numbers of several waterbirds.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Ria de Aveiro. Downloaded from on 29/03/2023.