ESS Unit 2 Ecological Succession

Front

What is ecological succession?

Back

Ecological succession is the process by which ecosystems change and develop over time, involving a series of progressive changes in species composition and community structure.

Front

What are the two main types of ecological succession?

Back

The two main types of ecological succession are primary succession and secondary succession.

Front

What is primary succession?

Back

Primary succession occurs in lifeless areas where soil has not yet formed, starting from bare rock.

Front

What is secondary succession?

Back

Secondary succession occurs in areas where a disturbance has destroyed an existing community but left the soil intact.

Front

What role do pioneer species play in succession?

Back

Pioneer species are the first organisms to colonize barren environments, helping to create conditions suitable for other species.

Front

Give an example of a pioneer species in primary succession.

Back

Lichens and mosses are common pioneer species in primary succession.

Front

What is a climax community?

Back

A climax community is a stable, mature ecological community that has reached a steady state of succession.

Front

What is the difference between primary and secondary succession?

Back

Primary succession starts from bare rock with no soil, while secondary succession begins in areas where soil is already present after a disturbance.

Front

What is the first stage of primary succession?

Back

The first stage of primary succession is the colonization of bare rock by pioneer species like lichens.

Front

What is the significance of lichens in primary succession?

Back

Lichens help break down bare rock into soil, facilitating the growth of other plants.