Question

Pioneer species such as lichen and moss inhabit an area after a major disturbance, such as a volcanic eruption. Over time, other species are found in the disturbed area, and the number of pioneer species decreases.
Why does the number of pioneer species decrease?

Answer 1

Pioneer species such as lichen and moss inhabit an area after a major disturbance such as a volcanic eruption. Over time, other species are found in the disturbed area and the number of pioneer species decreases. Why does the number of pioneer species decrease?The amount of available sunlight is reduced.