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 pioneer species?

Back

Pioneer species are the first organisms to colonize a previously disrupted or damaged ecosystem, initiating the ecological succession process.

Front

Give examples of pioneer species in primary succession.

Back

Mosses and lichens are common examples of pioneer species in primary succession.

Front

What is primary succession?

Back

Primary succession occurs in lifeless areas where soil has not yet formed, such as after a volcanic eruption or glacial retreat.

Front

What is secondary succession?

Back

Secondary succession occurs in areas where a disturbance has destroyed an existing ecosystem but left the soil intact, such as after a forest fire or hurricane.

Front

What is the correct order of primary succession?

Back

Bare rock, lichens & mosses, annual plants, perennial plants, shrubs & bushes, softwood trees, & hardwood trees.

Front

Why do pioneer species decrease in number over time?

Back

As the ecosystem develops, more soil is created, allowing for complex plants to thrive, which increases competition and reduces the role of pioneer species.

Front

What role do pioneer species play in an ecosystem?

Back

Pioneer species help to create soil and modify the environment, making it suitable for other species to inhabit.

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 a climax community?

Back

A climax community is a stable and mature ecological community that has reached the final stage of succession, characterized by a diverse array of species.