 The soil composition represents a challenge for vegetation to establish; plants must overcome very low levels of P, high levels of Al (in some areas), acidity and low water retention (due to shallowness of the soil).Because of these conditions, the flora thriving in the c"ampo rupestre" has developed several adaptations, such as carnivory, C4 metabolism, superficial root systems (to absorb periodic rain water faster), underground storage, stomatal crypts, etc.Old climatically buffered and infertile landscapes (OCBILs) are areas distributed around the globe that potentially share both abiotic and biotic commonalities.