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Location Madagascar, Antsiranana
Central coordinates 48o 46.00' East  13o 7.00' South
IBA criteria A1, A2, A3, A4i
Area 61,220 ha
Altitude 5 - 10m
Year of IBA assessment 2001

Asity Madagascar (Affiliate)

Site description This site consists of a strip of mangrove located along the western coast and stretching over 90 km between Antsatsaka (25 km north of Ambanja) in the south, and Bobasakoa (45 km north-west of Ambilobe) in the north. Ambaro Bay lies off its southern part. Ampasinantenina (Port Saint Louis) peninsula divides the site into two parts, where the city of Antsohimbondrona is directly linked to Ambilobe by a tar road 30 km long. In addition to the mangrove, this site includes mudflats (1 km wide at low tide), lakes and saltmarshes. The main rivers in the area, the Bobasakoa, Andranomandevy, Mananjeba, Mahavavy, Itasy and Ambazoana, flow from north to south into the Mozambique Channel. Several of them (some nutrient-poor) rise from the underground waters of the Ankarana massif. The mangrove woodland is mainly composed of Avicennia and Rhizophora trees (5–10 m high).

Key Biodiversity See Box and Tables 2 and 3 for key species. Forty-eight species are known from the site, of which seven are endemic to Madagascar. The site supports the largest congregations of Dromas ardeola and Sterna saundersi known in Madagascar.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Madagascar Teal Anas bernieri resident  1999  present  A1, A2, A3  Endangered 
Madagascar Heron Ardea humbloti resident  1999  present  A1, A2, A3  Endangered 
Madagascar Fish-eagle Haliaeetus vociferoides resident  1999  present  A1, A2, A3  Critically Endangered 
Crab-plover Dromas ardeola winter  1999  900 individuals  A4i  Least Concern 
Lesser Crested Tern Thalasseus bengalensis winter  1999  350 individuals  A4i  Least Concern 
Saunders's Tern Sternula saundersi winter  1999  236 individuals  A4i  Least Concern 
Sickle-billed Vanga Falculea palliata resident  1999  present  A3  Least Concern 

Land use

Land-use Extent (% of site)
forestry -
other -
Notes: Collection of eggs and young of breeding birds.

References Durand et al. (1966).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Ambavanankarana wetland. Downloaded from on 20/10/2016

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