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Location Madagascar, Mahajanga
Central coordinates 46o 56.00' East  16o 35.00' South
IBA criteria A1, A2, A3
Area 10,000 ha
Altitude 38 - 100m
Year of IBA assessment 2001

Asity Madagascar (Affiliate)

Site description The site consists of Lakes Ambanja, Vasily, Belongo and Manapatanana, located near Ambato-Boeni, and of Lakes Amparihibe, Mangabe, Bekopoly, Ambariasara and Bevoatavo, in the area of Maevatanana. The general area consists of a number of very large depressions, mainly covered (near Ambato-Boeni) by seasonal marshes which have been converted to rice-fields and other cultivation, and (near Maevatanana) by marshes and lakes. The main rivers are the Kamoro river, which flows across the Ambato-Boeni area, and the Betsiboka river, which flows west from Ambato-Boeni then south towards Maevatanana and which feeds the south of this area. The vegetation of the lakes includes beds of Cyperus, reedbeds of Phragmites, floating expanses of water-lily Nymphaea, non-native water-hyacinth Eichhornia and water-fern Azolla. On adjacent hills there are bushes of Zizyphus and Strychnos.

Key Biodiversity See Box and Tables 2 and 3 for key species. Thirty-four species are known from the site, of which three are endemic to Madagascar. Haliaeetus vociferoides is recorded infrequently, and Aythya innotata has been recorded in the past. Populations of Ardea humbloti and Tachybaptus pelzelnii are probably quite high, although nesting colonies of larger waterbirds in particular remain to be identified.

Non-bird biodiversity: Reptile: Erymnochelys madagascariensis (EN).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Madagascar Grebe Tachybaptus pelzelnii resident  1998  present  A1  Vulnerable 
Madagascar Heron Ardea humbloti resident  1998  present  A1, A2, A3  Endangered 
Madagascar Fish-eagle Haliaeetus vociferoides resident  1998  present  A1, A2, A3  Critically Endangered 
Madagascar Jacana Actophilornis albinucha resident  1998  present  A2  Near Threatened 

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -

References Decary (1932), Moureau (1956), Pidgeon (1996), Tercinier (1952).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Maevatanana-Ambato-Boeny wetlands. Downloaded from on 26/10/2016

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