practice flashcard 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.

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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, playing a crucial role in soil formation and nutrient addition.

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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 or glacier retreat.

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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 is a climax community?

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A climax community is a stable and mature ecological community that has reached a steady state, characterized by a diverse array of species.

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What role do disturbances play in ecological succession?

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Disturbances, such as fires or storms, can reset ecological succession, allowing new species to establish and change the community structure.

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What is ecological resilience?

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Ecological resilience is the ability of an ecosystem to recover from disturbances and return to its original state.

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What is the difference between primary and secondary succession?

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Primary succession starts on bare rock or lifeless areas without soil, while secondary succession occurs in areas where a disturbance has happened but soil remains.

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Give an example of a pioneer species.

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Lichens and mosses are common examples of pioneer species that help create soil in primary succession.

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What is the significance of soil in ecological succession?

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Soil provides essential nutrients and a habitat for plants and organisms, facilitating the establishment of more complex communities.