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 progressive changes in species composition and community structure.

Tags

NGSS.MS-LS2-4

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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 glacier melts or 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 ecosystem but left the soil intact, such as after a forest fire.

Tags

NGSS.MS-LS2-4

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What are pioneer species?

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

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What role do lichens play in primary succession?

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

Tags

NGSS.MS-LS2-2

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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 succession.

Tags

NGSS.HS-LS2-6

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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 after a disturbance.

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What is a shade-tolerant tree?

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A shade-tolerant tree is a tree that can grow in low light conditions and does not require direct sunlight to thrive.

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What is the order of species appearance in primary succession?

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The order typically starts with pioneer species (like lichens), followed by small plants, then shrubs, and finally trees.

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What is a disturbance in an ecosystem?

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A disturbance is an event that significantly alters the structure of an ecosystem, such as fire, flood, or human activity.