|Central coordinates||44o 23.00' East 18o 56.00' South|
|IBA criteria||A1, A2, A3, A4i|
|Altitude||7 - 80m|
|Year of IBA assessment||2001|
Site description Lakes Ankerika, Antsamaka, Soamalipo and Befotaka form the wetlands of the Manambolomaty complex, 35 km south-west of Antsalova, and are surrounded by the Tsimembo Forest. Lake Ankerika is located in the commune of Trangahy, and the three others in the commune of Masoarivo. Lakes Soamalipo and Befotaka are linked. The lakes lie on alluvial soils and most are freshwater and permanent, with a depth of 3–6 m depending on the season. Lake Antsamaka is brackish and 3 m deep during the rainy season, but may completely dry up at the end of the dry season. Aquatic vegetation at this lake includes water-lilies Nymphaea and rushes Juncus. In the southern part of the lakes, an area of 98 ha has been converted to seasonal marshes and rice-fields. Tsimembo Forest is bounded by the Manambolomaty river in the south and by the Beboka river in the north, and consists of dense, dry deciduous forest. Dominant canopy trees include Dalbergia, Stereospermum, Givotia, Xylia, Cordyla, Hildegardia, Delonix and Diospyros. The mid-stratum is dominated by species of Rubiaceae, Euphorbiaceae and Leguminosae. On patches of much sandier soil (old sand-dunes), the forest canopy is lower and there are fewer emergents. The part of the Tsimembo Forest that surrounds Lake Antsamaka is called Ankotrofotsy Forest.
Key Biodiversity See Box and Tables 2 and 3 for key species. Ninety-three species are known from the site, of which 29 are endemic to Madagascar. The site holds 10 pairs of Haliaeetus vociferoides, representing c.10% of the world population. There is an islet which is a roosting and nesting site for herons (Ardeidae) such as Ardea humbloti, and for Anas bernieri.
Non-bird biodiversity: Lemurs: Phaner furcifer pallescens (VU), Hapalemur griseus occidentalis (VU), Propithecus verreauxi deckeni (VU). Carnivore: Cryptoprocta ferox (VU). Reptile: Erymnochelys madagascariensis (EN).
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Madagascar Teal Anas bernieri||resident||1993-1994||35 individuals||-||A1, A2, A3||Endangered|
|Lesser Flamingo Phoeniconaias minor||non-breeding||1993-1994||present||-||A1||Near Threatened|
|Madagascar Crested Ibis Lophotibis cristata||resident||1993-1994||present||-||A1||Near Threatened|
|African Spoonbill Platalea alba||non-breeding||1993-1994||401 individuals||-||A4i||Least Concern|
|Madagascar Pond-heron Ardeola idae||breeding||1993-1994||present||-||A1||Endangered|
|Madagascar Heron Ardea humbloti||resident||1993-1994||440 individuals||-||A1, A2, A3, A4i||Endangered|
|Madagascar Fish-eagle Haliaeetus vociferoides||resident||1995||10 breeding pairs||good||A1, A2, A3||Critically Endangered|
|Henst's Goshawk Accipiter henstii||resident||1993-1994||present||-||A1||Near Threatened|
|Black-banded Plover Charadrius thoracicus||resident||1993-1994||present||-||A1, A2, A3||Vulnerable|
|Madagascar Jacana Actophilornis albinucha||resident||1993-1994||present||-||A2||Near Threatened|
|Giant Coua Coua gigas||resident||1993-1994||present||-||A3||Least Concern|
|Coquerel's Coua Coua coquereli||resident||1993-1994||present||-||A2, A3||Least Concern|
|Sickle-billed Vanga Falculea palliata||resident||1993-1994||present||-||A3||Least Concern|
|Sakalava Weaver Ploceus sakalava||resident||1993-1994||present||-||A3||Least Concern|
|2001||high||not assessed||not assessed|
|Good - based on reliable and complete / representative data|
|Agriculture and aquaculture||annual & perennial non-timber crops - small-holder farming||happening now||some of area/population (10-49%)||moderate to rapid deterioration||high|
|Agriculture and aquaculture||livestock farming and ranching (includes forest grazing) - small-holder grazing, ranching or farming||happening now||majority/most of area/population (50-90%)||moderate to rapid deterioration||high|
|Biological resource use||logging & wood harvesting - unintentional effects: subsistence/small scale||happening now||some of area/population (10-49%)||moderate to rapid deterioration||high|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Complexe des lacs de Manambolomaty||Wetlands of International Importance (Ramsar)||7,491||protected area contained by site||7,491|
|Tsimembo||Forest Reserve||13,900||protected area contained by site||13,900|
|Land-use||Extent (% of site)|
|nature conservation and research||-|
References Langrand (1987), Rabarisoa et al. (1995), Ramanitra and Randrianasolo (1994), Ramanitra et al. (1993), Watson et al. (1993), World Wide Fund for Nature–Madagascar (1997).
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Recommended citation BirdLife International (2015) Important Bird and Biodiversity Area factsheet: Manambolomaty wetland complex and Tsimembo Classified Forest. Downloaded from http://www.birdlife.org on 26/11/2015
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