APRIL operates mainly in Sumatra, Indonesia in areas representing some of the last refuges for the critically endangered Sumatran elephant and Sumatran tiger. On Sumatra alone, there are 200 tree species that have been classified as being endangered, which is 39 per cent of all the endangered tree species in Indonesia. APRIL's logging sites in Sumatra are the natural habitat of numerous endangered species. the Sumatran elephant sub-species (Elephans maximus). In 2007, Sumatran elephant populations in Riau have declined to as few as 210 individuals. If forest clearing isn’t halted, they may become locally extinct in a few years’ time. the Sumatran tiger (Panthera tigris).

Deforestation in Riau has been driving the Sumatran tiger to extinction. In 2007, Sumatran tiger populations in Riau have declined to as192 individuals. globally endangered tapir (Tapirus indicus),

The conversion of natural rainforests into tree plantations inevitably reduces the habitat of these species, leading them extinction. As an example, in 2005 APRIL started to clear the precious rainforests of in Bukit Tigapuluh and Kerumutan landscapes, some of the last habitat of the Sumatran Tiger.