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Location Madagascar, Mahajanga
Central coordinates 44o 6.00' East  17o 28.00' South
IBA criteria A1, A2, A3, A4i
Area 8,300 ha
Altitude 0 - 5m
Year of IBA assessment 2001

Asity Madagascar (Affiliate)

Site description The site lies on the west coast of Madagascar, and consists of the mangrove located south-east of the town of Tambohorano, a portion of the adjacent coastal area, an offshore island (Nosy Vao), and Lakes Mandrozo and Manapape, located respectively 35 km west and 15 km south-east of the town. Lake Manapape (also called Andranovoribe) lies near the village of Andranovao. The mangrove extends south to the mouth of the Manambaho river and north to the north of Tambohorano. It is relatively dense, dominated by Avicennia, and is surrounded by vast coastal mudflats. The lakes are natural, with clear water. Lake Mandrozo is 2–3 m deep, while Lake Manapape is shallower. Seasonal marshes develop on the periphery of Lake Mandrozo when it floods. There are several islets in this lake, the largest of which is in the middle. Marginal vegetation at Lake Manapape includes abundant Cyperus, as well as Mimosa pudica and floating expanses of water-lily Nymphaea and water-hyacinth Eichhornia. Lake Manapape has very good fish-stocks. Both lakes are surrounded by savanna with palms Hyphaene. Nosy Vao is covered in savanna with some palms Hyphaene in the central part of the island; offshore there are coral reefs.

Key Biodiversity See Box and Tables 2 and 3 for key species. Eighty-two species are known from the site, of which 20 are endemic to Madagascar. A relatively large number of Anas bernieri breed in the Tambohorano mangroves, representing perhaps 10% of the world population. Large and significant numbers of terns (Sterninae) roost on the reefs off Nosy Vao at low tide; most or all seem to be only passing through, before the breeding season.

Non-bird biodiversity: Lemur: Propithecus verreauxi deckeni (VU).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Madagascar Teal Anas bernieri resident  1998  67 individuals  A1, A2, A3, A4i  Endangered 
Madagascar Heron Ardea humbloti resident  1998  present  A1, A2, A3  Endangered 
Madagascar Fish-eagle Haliaeetus vociferoides resident  1998  present  A1, A2, A3  Critically Endangered 
Black-banded Plover Charadrius thoracicus resident  1998  61 individuals  A1, A2, A3, A4i  Vulnerable 
Madagascar Jacana Actophilornis albinucha resident  1998  present  A2  Near Threatened 
Lesser Crested Tern Thalasseus bengalensis non-breeding  1998  3,200 individuals  A4i  Least Concern 
Roseate Tern Sterna dougallii non-breeding  1998  883 individuals  A4i  Least Concern 
Sickle-billed Vanga Falculea palliata resident  1998  present  A3  Least Concern 
Sakalava Weaver Ploceus sakalava resident  1998  present  A3  Least Concern 

Land use

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

References Berkelman (1997).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Tambohorano Wetland NPA. Downloaded from on 23/10/2016

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