Pioneer species in AP Biology

Definition

Pioneer species are the first organisms to colonize and establish a community in an area that has been disturbed or devoid of life.

Related terms

Succession: The process by which ecosystems change over time, starting with pioneer species and progressing towards more complex communities.

Primary succession: The type of succession that occurs in areas where no soil is present, such as on bare rock or after a volcanic eruption.

Secondary succession: The type of succession that occurs in areas where soil is already present, such as after a forest fire or agricultural abandonment.