Science 7 - Ecological Succession

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What is ecological succession?

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Ecological succession is the process by which ecosystems change and develop over time, involving a series of stages that lead to a stable community.

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What are the two main types of ecological succession?

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Primary succession and secondary succession.

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What is primary succession?

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Primary succession occurs in an area where there is no soil, such as after a volcanic eruption or glacier retreat.

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What is secondary succession?

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Secondary succession occurs in areas where soil is present but the ecosystem has been disturbed, such as after a forest fire or human activity.

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What are pioneer species?

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Pioneer species are the first organisms to colonize a barren environment in the process of ecological succession.

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Give an example of a pioneer species.

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Lichens and mosses are common examples of pioneer species.

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What role do pioneer species play in ecological succession?

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

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What is a disturbance in the context of ecological succession?

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A disturbance is an event that disrupts an ecosystem, leading to changes in species composition and community structure.

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What is an example of a disturbance that can lead to secondary succession?

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Humans cutting down trees in a forest is an example of a disturbance that can lead to secondary succession.

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What is the final stage of ecological succession called?

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The final stage of ecological succession is called a climax community, which is a stable and mature ecosystem.