4.3 Succession

Front

What is primary succession?

Back

The process by which a new community forms in an area where no community previously existed, often starting from bare rock or sand.

Front

What is secondary succession?

Back

The process of regrowth and reestablishment of a community in an area where a disturbance has occurred but soil and some organisms still remain.

Front

What are pioneer species?

Back

Species that are the first to colonize previously disrupted or damaged ecosystems, such as mosses and lichens in primary succession.

Front

What role do natural disasters play in succession?

Back

Natural disasters like floods and tornadoes can lead to secondary succession by disturbing existing ecosystems.

Front

Give an example of an event that triggers secondary succession.

Back

A forest fire is an event that can trigger secondary succession.

Front

What is a climax community?

Back

A stable and mature community that undergoes little or no change in species composition.

Front

How does primary succession differ from secondary succession?

Back

Primary succession occurs in lifeless areas without soil, while secondary succession occurs in areas where a disturbance has destroyed an existing community but soil remains.

Front

What are some examples of pioneer species in primary succession?

Back

Mosses and lichens are common examples of pioneer species.

Front

What is the significance of pioneer species in an ecosystem?

Back

Pioneer species help to create soil and conditions that allow other species to establish and grow.

Front

What is the impact of invasive species on succession?

Back

Invasive species can disrupt natural succession processes by outcompeting native species for resources.