Ecological Succession FA24

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What is ecological succession?

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Ecological succession is the process of change in the species structure of an ecological community over time, often following a disturbance.

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What are pioneer species?

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

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What is a climax community?

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A climax community is a stable and mature ecological community that has reached the final stage of ecological succession.

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What is primary succession?

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

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What is secondary succession?

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

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What role do lichens play in primary succession?

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

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What is the order of succession after a volcanic eruption?

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The typical order of succession after a volcanic eruption is Lichens → Grasses → Shrubs → Trees.

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What is ecological recession?

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Ecological recession refers to a decline in biodiversity or the degradation of an ecosystem, often due to human activities.

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What is the difference between primary and secondary succession?

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Primary succession starts on bare rock without soil, while secondary succession occurs in areas where soil is already present.

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What is a pioneer community?

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A pioneer community is the first group of species that colonize a barren environment in the early stages of ecological succession.