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Location Madagascar, Antsiranana
Central coordinates 48o 15.00' East  13o 20.00' South
IBA criteria A1, A3
Area 28,108 ha
Altitude 0 - 515m
Year of IBA assessment 2001

Asity Madagascar (Affiliate)

Site description Located in the north-west of Madagascar, this site is composed of a group of islands and islets. Nosy Be is the largest island off the coast of Madagascar (c.25,200 ha). It is mountainous, rising to 430 m in the south-east. Its eastern coast is mainly occupied by agriculture, notably sugar-cane. Dense, humid evergreen forest remains more or less intact in the centre of the island and also in Lokobe Strict Nature Reserve in the south-east. Several small islands and islets surround Nosy Be. Nosy Komba (2,200 ha) lies c.3 km south-east of Nosy Be. It is pyramidal, with a peak 579 m high, and is covered by dense, humid evergreen forest. There are a few small fishing villages. Nosy Sakatia (500 ha), located west of Nosy Be, is also covered by dense, humid evergreen forest. It is mountainous (up to 137 m high). Nosy Tanikely (c.30 ha) is an islet with cliffs in the north and west, and sandy beaches in the south and east. It is a marine reserve, surrounded by beautiful coral reefs. Its central plateau is covered by dense, humid evergreen forest. Nosy Raty (c.30 ha) is a small basaltic islet, covered by savanna with some woody species. Nosy Fanihy (25 ha) is a raised reef (several tens of metres above sea-level) north of Nosy Be, covered in woodland (10–15 m) with lianas. The understorey is open and easy to access, despite the presence of spiny shrubs. At low tide, the beach in the south-east of the island is exposed. Thirty kilometres south-west of Nosy Be, near the Ampasindava peninsula, there is a group of small islets and rocks: Nosy Kivongy, Nosy Antsoha and Nosy Ankazoberavina (each less than 50 ha in area).

Key Biodiversity See Box and Table 3 for key species. Four pairs of Haliaeetus vociferoides breed on the satellite islands of Nosy Be (Nosy Antsoha, Nosy Ankazoberavina, Nosy Vorona and Nosy Fanihy) and at least one pair breeds on Nosy Be. A few dozen pairs of Sula leucogaster breed on Nosy Kasinjy. Nosy Raty holds five breeding pairs of Egretta dimorpha.

Non-bird biodiversity: Lemurs: Eulemur macaco macaco (VU), Lepilemur dorsalis (VU).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Madagascar Fish-eagle Haliaeetus vociferoides resident  1997  5 breeding pairs  A1, A3  Critically Endangered 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Lokobe Strict Nature Reserve 740 protected area contained by site 1,523  

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
nature conservation and research -
tourism/recreation -

References Battistini (1959), Langrand (1987), Rabarisoa (1994), Watson et al. (1993).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Nosy Tanihely National Park. Downloaded from on 21/10/2016

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