Primary and Secondary Succession

Front

What is primary succession?

Back

Primary succession is the process of ecological change that occurs in an area where no soil exists, such as after a volcanic eruption or glacier retreat.

Front

What is secondary succession?

Back

Secondary succession is the process of ecological change that occurs in an area where soil is present but has been disturbed, such as after a forest fire or flood.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Front

What are pioneer species?

Back

Pioneer species are the first organisms to colonize a barren environment in primary succession, such as lichens and mosses.

Front

What role do lichens play in primary succession?

Back

Lichens help break down rock into soil, making it possible for other plants to grow.

Front

What is the order of plant growth after a volcanic eruption?

Back

Lichens → Grasses → Shrubs → Trees.

Tags

NGSS.MS-LS1-5

Front

Can disruptions to ecosystems impact organism populations?

Back

Yes, disruptions to physical or biological components can significantly impact organism populations.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Front

What is an example of an event that triggers primary succession?

Back

A volcanic eruption that creates new land is an example of an event that triggers primary succession.

Front

What is an example of an event that triggers secondary succession?

Back

A forest fire that clears an area but leaves the soil intact is an example of an event that triggers secondary succession.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Front

How does soil formation occur in primary succession?

Back

Soil formation occurs as pioneer species like lichens and mosses break down rocks and accumulate organic matter.

Front

What is the difference between primary and secondary succession?

Back

Primary succession occurs in lifeless areas without soil, while secondary succession occurs in areas where soil is already present.