|Location||Réunion (to France), Entre-Deux,Le Tampon|
|Central coordinates||55o 30.00' East 21o 10.00' South|
|IBA criteria||A1, A2, A4ii|
|Altitude||550 - 2,350m|
|Year of IBA assessment||2001|
Site description Grand Bassin–Le Dimitile is on the southern slopes of the volcanic Piton des Neiges massif, which are now separated from the summit by the Cirque de Cilaos and consist of a south-facing escarpment incised by eight small ravines. The site extends from the south-east rim of the Cirque de Cilaos (Sommet de l’Entre-Deux, 2,350 m) down to around 550 m on the slopes above the Bras de la Plaine river near La Commune d’Entre-Deux. Most vegetation is mixed montane forest; small areas of bare rock, scree, montane shrubland or bushland and thicket are found in the higher parts, and deforested areas with exotic vegetation (including some cultivation) occur lower down.
Key Biodiversity See Box and Table 2 for key species. The site is one of the most likely to hold breeding Pterodroma aterrima, based on the fact that seven specimens have been found nearby (five recently), and some descriptions of seabirds by local people may refer to this species. Pterodroma baraui may also breed at high altitude. All of the forest-living native birds of La Réunion occur, except Coracina newtoni, along with an important population of Puffinus lherminieri. In 1997, 3–5 pairs of Circus maillardi were present.
Non-bird biodiversity: Endemic plant communities: forest, shrubland and bushland and thicket rich in endemic plants.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Mascarene Petrel Pseudobulweria aterrima||breeding||-||present||-||A1||Critically Endangered|
|Puffinus lherminieri||breeding||-||300 breeding pairs||-||A4ii||Not Recognised|
|Mascarene Swiftlet Aerodramus francicus||resident||1998||present||-||A1, A2||Near Threatened|
|Mascarene Paradise-flycatcher Terpsiphone bourbonnensis||resident||1998||present||-||A2||Least Concern|
|Olivaceous Bulbul Hypsipetes borbonicus||resident||1998||present||-||A2||Least Concern|
|Mascarene Grey White-eye Zosterops borbonicus||resident||1998||present||-||A2||Least Concern|
|Reunion Olive White-eye Zosterops olivaceus||resident||1998||present||-||A2||Least Concern|
|Reunion Stonechat Saxicola tectes||resident||1998||present||-||A2||Least Concern|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Pitons, cirques and remparts of Reunion Island||World Heritage Site||105,838||protected area overlaps with site||2,516|
|Land-use||Extent (% of site)|
References Anon. (1998), Attié et al. (1998), Barré (1988), Cadet (1980), Le Corre and Gerdil (in prep.), Jouanin (1987).
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Recommended citation BirdLife International (2015) Important Bird and Biodiversity Area factsheet: Grand Bassin - Le Dimitile. Downloaded from http://www.birdlife.org on 25/11/2015
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