How Ecosystems ChangeChapter 6, Lesson 6

ecological successionprimary succession

secondary successionpioneer species

pioneer communityclimax community

ecological succession – the gradual replacement of one

community by another

primary succession – the gradual build up of a

community that was wiped out

secondary succession – the gradual replacement of one community by another, but

there is already some ecosystem/community there

secondary succession – the gradual replacement of one

community by another

secondary succession – the gradual replacement of one community by another, but

there is already some ecosystem/community there

ecological succession – the gradual replacement of one

community by another

pioneer species – the first species to grow in an otherwise lifeless area

pioneer community – when the first animals in a community arrive as a result of a pioneer

species. A new ecosystem forms.

pioneer community – when the first animals in a community arrive as a result of a pioneer

species. A new ecosystem forms.

climax community – an established community. Few new organisms

arrive, few leave. Things are relatively safe and balanced, until

another major disaster arises.