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Location Madagascar, Toliara
Central coordinates 44o 49.00' East  22o 37.00' South
IBA criteria A1, A2, A3
Area 74,000 ha
Altitude 485 - 825m
Year of IBA assessment 2001

Asity Madagascar (Affiliate)

Site description This site lies c.10 km from Sakaraha and 130 km from Toliara, and consists of the Zombitse, Vohibasia and Isoky-Vohimena Forests, which cover a gently undulating terrain of dome-shaped sandstone hills. The Isalo massif lies to the east, and a calcareous plateau (820 m high) to the west—both are oriented north–south. The soil is sandy. The Fiherenana and Teheza rivers, tributaries of the Onilahy, rise within the Zombitse and Vohibasia Forests. The vegetation consists of dense deciduous forest and xerophilous bushland, dominated by Securinega, Malleastrum, Carissa and Teclea, with some emergents, such as Commiphora and Brachylaena. The xerophilous bushland is characterized by species of Euphorbia, Adansonia and Dialium.

Key Biodiversity See Box and Tables 2 and 3 for key species. Ninety species are known from this site, of which 38 are endemic to Madagascar. One of the endemic species, Phyllastrephus apperti, is known only from the forests of Zombitse and Analavelona (IBA MG066). Two species, Thamnornis chloropetoides and Nesillas lantzii, are characteristic of spiny forest. Monticola bensoni is recorded here seasonally.

Non-bird biodiversity: Lemurs: Mirza coquereli (VU), Phaner furcifer pallescens (VU), Lemur catta (VU), Propithecus verreauxi verreauxi (VU). Carnivore: Cryptoprocta ferox (VU). Bats: Scotophilus robustus (nt), Mormopterus jugularis (VU). Reptile: Phelsuma standingi (VU).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Madagascar Grebe Tachybaptus pelzelnii resident  1993-1997  present  A1  Vulnerable 
Madagascar Crested Ibis Lophotibis cristata resident  1993-1997  present  A1  Near Threatened 
Madagascar Pond-heron Ardeola idae breeding  1993-1997  present  A1  Endangered 
Madagascar Marsh-harrier Circus macrosceles resident  1993-1997  present  A1  Vulnerable 
Madagascar Sparrowhawk Accipiter madagascariensis resident  1993-1997  present  A1  Near Threatened 
Henst's Goshawk Accipiter henstii resident  1993-1997  present  A1  Near Threatened 
Coua ruficeps resident  1993-1997  present  A3  Not Recognised 
Giant Coua Coua gigas resident  1993-1997  present  A3  Least Concern 
Coquerel's Coua Coua coquereli resident  1993-1997  present  A2, A3  Least Concern 
Sickle-billed Vanga Falculea palliata resident  1993-1997  present  A3  Least Concern 
Lantz's Brush-warbler Nesillas lantzii resident  1993-1997  present  A3  Least Concern 
Appert's Tetraka Bernieria apperti resident  1993-1997  present  A1, A2, A3  Vulnerable 
Thamnornis Warbler Thamnornis chloropetoides resident  1993-1997  present  A3  Least Concern 
Monticola bensoni non-breeding  1993-1997  present  A1, A2  Not Recognised 
Sakalava Weaver Ploceus sakalava resident  1993-1997  present  A3  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Zombitse-Vohibasia National Park 36,853 protected area contained by site 36,853  


IUCN habitat Habitat detail Extent (% of site)
Shrubland   24%
Grassland   17%
Forest   57%

Land use

Land-use Extent (% of site)
agriculture -
hunting -
nature conservation and research -
tourism/recreation -
other -
Notes: Charcoal production.

References Benson (1974), Bru (1996), Collar and Stuart (1988), Colston (1972), Goodman and Langrand (1994), Jenkins (1987), Langrand and Goodman (1997), Mustoe (1997), Mustoe et al. (1998), Nicoll and Langrand (1989), Randriantavy (1993), Razafimahaimodison (1993).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Zombitse-Vohibasia National Park and extension. Downloaded from on 25/10/2016

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