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Location Mauritius, Flacq,Grand Port
Central coordinates 57o 42.00' East  20o 18.00' South
IBA criteria A1, A2
Area 4,400 ha
Altitude 100 - 626m
Year of IBA assessment 2001

Site description The site comprises three parallel, mountainous chains of very unequal size in the centre-east and south-east of Mauritius, separated by agricultural land (which is excluded from the site). All three chains are forested, and cliffs are rare. The Bambous (or Grand Port) Range is the highest and most extensive. It is dominated by a 12 km long ridge (east–west), with southward-pointing spurs, between Montagne Chat in the east and Montagne Table à Perrot in the west. Other important peaks are Montagne des Créoles (369 m), Montagne Lion (480 m), Pic Grand Fond (521 m) and Montagne Bambou (626 m, the highest). The Bambous Range contains around 2,600 ha of native vegetation, surrounded by a belt of exotic forest. Around 5 km to the north lies Montagne Blanche (7 km long, highest point 532 m, containing 200 ha of native forest), with Montagne Fayence 2.5 km beyond that (4 km long, highest point 433 m, containing 120 ha of native forest). The vegetation is varied, with some excellent stands of mixed montane forest in parts of the Bambous Range, but dominated by exotics in the more humid parts. Small areas of dry evergreen lowland forest exist in the far east. Deer-ranching and -hunting take place in much of the area, and nature-tourism enterprises operate locally. The upper parts of the mountains are little-disturbed.

Key Biodiversity See Box and Table 2 for key species. The Bambous Range contains a large (by Mauritian standards) area of habitat of great importance for Falco punctatus (successfully reintroduced in 1987; minimum 43 pairs, 1998) and Hypsipetes olivaceus (c.100 pairs, 35% of world population, 1993) and two more restricted-range species: Collocalia francica (probably an uncommon breeder) and Zosterops borbonicus (abundant). In 1997, Montagne Blanche and Montagne Fayence lacked the two threatened species, but F. punctatus is likely to colonize and H. olivaceus may wander there. Zosterops chloronothos is not resident, but occurs nearby on Montagne Lagrave (in the ‘Relict forests of the central plateau’ IBA, MU004) and so might wander to the western Bambous Range.

Non-bird biodiversity: Endemic plant communities, all rich in rare and endemic species: mixed montane forest (widespread; Bambous Range contains some of the least-invaded wet forest on Mauritius); dry evergreen lowland forest (localized in east). Mammals: Pteropus niger (VU). Reptiles: Phelsuma rosagularis, Phelsuma cepediana (endemic).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Mauritius Kestrel Falco punctatus resident  1998  present  A1, A2  Endangered 
Mascarene Swiftlet Aerodramus francicus resident  1998  present  A1, A2  Near Threatened 
Mauritius Black Bulbul Hypsipetes olivaceus resident  1998  present  A1, A2  Vulnerable 
Mascarene Grey White-eye Zosterops borbonicus resident  1998  present  A2  Least Concern 

Land use

Land-use Extent (% of site)
hunting -
tourism/recreation -
water management -

References Cheke (1987a,b), Jones (1987), Jones et al. (1995), Safford (1997a,b), Safford and Jones (1997).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: East coast mountains. Downloaded from on 22/10/2016

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