The fauna of tropical forests: causes and conseqeunces of their reduction:
The diversity of tropical forests and their fauna is due to the poor nutrients in the soils. As tropical species tend to occur only in relatively low numbers of individuals and in often very limited areas, they are especially exposed to threat by human interventions.
This has far reaching consequences for the ecosystems and the traditional human inhabitants. The regeneration of vegetation even in natural forests and their biodiversity are negatively affected by hunting which poses an increasing risk to bird and mammal species important for seed dispersal.
Overcollecting and overhunting are increasingly threatening species even in structurally intact forests. The “values” of tropical fauna lie not only in their ecological and material functions, but are of special immaterial and cultural importance.