This forest is part of the Karimbola plateau, and lies on the banks of the Menarandra river, 40 km south of Ampanihy. The hilly terrain is bordered by an alluvial (clay) plain and old sand-dunes. The vegetation of xerophilous bushland is dominated by Didiereaceae (notably Alluaudia) and Euphorbiaceae, with a canopy no higher than 6 m. There are isolated trees (the remnants of a degraded riparian forest), as well as alluvial vegetation, mainly composed of Tamarindus, Ficus, Cedrelopsis and Flacourtia. The bushland is, in some places, replaced by grassland with some woody species, including Commiphora, Phyllanthus, Harpagophytum, Adansonia (in the middle of Alluaudia thickets), and Euphorbia.
See Box and Tables 2 and 3 for key species. There is a particular abundance of species characteristic of Euphorbia bushland, such as Coua verreauxi and Monticola imerinus. Species of global conservation concern include Circus maillardi and Coua verreauxi.
Non-bird biodiversity: Lemur: Propithecus verreauxi verreauxi (VU). Reptiles: Geochelone radiata (VU), Pyxis arachnoides (VU).
BirdLife International (2020) Important Bird Areas factsheet: Menarandra Forest / Vohindefo NPA. Downloaded from http://www.birdlife.org on 13/07/2020.