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

Front

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 soil and some organisms still remain, such as after a forest fire.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Front

What are pioneer species?

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Pioneer species are the first organisms to colonize previously uninhabited or disturbed land, such as lichens and mosses in primary succession.

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What role do lichens play in primary succession?

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

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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, characterized by a diverse array of species.

Tags

NGSS.MS-LS2-3

Front

How does a glacier melting lead to primary succession?

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When a glacier melts, it exposes bare rock, creating a new environment where primary succession can begin as pioneer species colonize the area.

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

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Examples of disturbances include forest fires, hurricanes, or human activities like farming.

Tags

NGSS.MS-LS2-4

Front

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 larger plants, and finally trees.