The niaouli savannah plains of the Caledonian Far West are ideal for breeding cattle, an emblematic agricultural activity of the West Coast, the productions of which are honored each year during the great Bourail fair. The niaouli savannah is an anthropic ecosystem, poor in biodiversity, which results from the disappearance of the original primary dry forest under the human pressures (clearing, fires) linked to the development of livestock farming introduced by Europeans from 1850.