|Central coordinates||44o 26.00' East 19o 45.00' South|
|IBA criteria||A1, A2, A3, A4i|
|Altitude||0 - 200m|
|Year of IBA assessment||2001|
Ornithological information See Box and Tables 2 and 3 for key species. Eighty-two species have been recorded, of which 22 are endemic to Madagascar. There are a few pairs of Haliaeetus vociferoides, including at least one in the upper valley of the Tsiribihina, and Anas bernieri breed in the mangroves. There are large congregations of Glareola ocularis on the banks of the Tsiribihina, and one of the most significant congregations of Thalassornis leuconotus insularis in Madagascar can be found in Masoarivo.
Site description The site is located 35 km west of Belo-sur-Tsiribihina. The Tsiribihina delta includes the shoreline, sandbanks, lagoons, coastal mudflats, mangrove forest, saltflats, and areas of marsh and of dry land. The mangrove is 2–4 m high, and dominated by trees of Avicennia, Rhizophora, Ceriops, Bruguiera and Sonneratia. The saltflats often flood during the rainy season. The marshy areas are dominated by sedge Cyperus, reed Phragmites and non-native water-hyacinth Eichhornia, while the dry land is covered in savanna, with palms. The wetlands of the upper Tsiribihina river include the neighbouring lakes, and the Sahajilo and Mania rivers. Lake Kimanomby, west of Ambohibary village, is surrounded by dense, dry deciduous forest (Ambovondambo Forest to the west, Marotapia Forest to the east). There is no floating vegetation, but the margins are covered by Eichhornia. Lake Masoarivo, west of Masoarivo village, is small, shallow and red due to muddy sediments. Lake Hima has floating vegetation and is surrounded by fishermen’s camps. In the Tsiribihina valley, between the towns of Miandrivazo and Malaimbandy, there are several lakes and a vast area of marshes, dominated by sedge Cyperus and reed Phragmites.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Madagascar Teal Anas bernieri||resident||1998||40 individuals||-||A1, A2, A3, A4i||Endangered|
|Madagascar Pond-heron Ardeola idae||breeding||1998||present [units unknown]||-||A1||Endangered|
|Madagascar Heron Ardea humbloti||resident||1998||50 individuals||-||A1, A2, A3, A4i||Endangered|
|Madagascar Fish-eagle Haliaeetus vociferoides||resident||1998||2-3 breeding pairs||-||A1, A2, A3||Critically Endangered|
|Madagascar Plover Charadrius thoracicus||resident||1998||46-47 individuals||-||A1, A2, A3, A4i||Vulnerable|
|Terek Sandpiper Xenus cinereus||non-breeding||1998||642 individuals||-||A4i||Least Concern|
|Madagascar Pratincole Glareola ocularis||non-breeding||1998||250 individuals||-||A4i||Vulnerable|
|Lesser Crested Tern Sterna bengalensis||non-breeding||1998||3,300 individuals||-||A4i||Least Concern|
|Coquerel's Coua Coua coquereli||resident||1998||present [units unknown]||-||A3||Least Concern|
|Red-capped Coua Coua ruficeps||resident||1998||present [units unknown]||-||A3||Least Concern|
|Sickle-billed Vanga Falculea palliata||resident||1998||present [units unknown]||-||A3||Least Concern|
|Sakalava Weaver Ploceus sakalava||resident||1998||present [units unknown]||-||A3||Least Concern|
|Land-use||Extent (% of site)|
|Notes: Cutting mangroves for construction wood; firewood collection.|
Other biodiversity Lemurs: Propithecus verreauxi deckeni (VU), P. verreauxi coronatus (CR). Reptile: Boa madagascariensis (VU).
Management considerations Human activities in the mangroves include exploitation for construction wood and firewood, and collection of nestling waterbirds for food. Close to the mouth of the Ambakivao river, hunting is frequent near the areas that support large congregations of Phoenicopterus ruber. In the upper Tsiribihina, there is also significant pressure resulting from hunting and conversion of marshes to rice-fields.
References Safford (1993).
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Wetlands of the Tsiribihina delta and upper Tsiribihina river. Downloaded from http://www.birdlife.org on 25/05/2013
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