But ecological differences exist as I. orjenii is never found on extremely shallow soils.

This causes trees to be stunted in the shallow soils.

However, the shallow soil, with alternating drought and flooding, is likely the main factor.

Because of the shallow soil and the extreme conditions created by it, trees are unable to grow in the glades.

As a result many of these shrubs' roots are in shallow soil or even exposed.

It is often found growing in shallow soils.

Over time, however, these two natural forces resulted in shallow, rocky soil, which helped to limit the hamlet's population.

They are usually found at an altitude of 500-1000 feet in harsh areas including exposed, shallow soils.

The shallow soils are neutral or acidic and rich in organic matter.

It often predominates on shallow, rocky soil, where grasses are not well established.