LS2.5 BIO1 Review

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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 climax community.

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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 on bare rock.

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What distinguishes primary succession from secondary succession?

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Primary succession occurs on surfaces where no soil exists, while secondary succession occurs in areas where a disturbance has destroyed an existing ecosystem but soil remains.

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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 and balanced ecosystem.

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What role do disturbances play in ecological succession?

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Disturbances, such as fires or floods, create opportunities for succession by altering the environment and allowing new species to establish.

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What is the significance of a forest fire in secondary succession?

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A forest fire can clear out existing vegetation, allowing for new growth and the establishment of pioneer species, leading to secondary succession.

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What is the typical order of species in secondary succession?

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The typical order includes pioneer species, followed by intermediate species, and finally climax community species.

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How does a pond ecosystem develop over time?

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A pond ecosystem develops through stages of succession, starting with pioneer species, leading to increased biodiversity, and eventually stabilizing into a mature ecosystem.

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What is the difference between a pioneer community and a climax community?

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A pioneer community consists of early colonizers that establish in a disturbed area, while a climax community is a stable, mature ecosystem that has reached its final stage.

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What factors influence the rate of ecological succession?

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Factors include the type of disturbance, climate, soil quality, and the availability of species for colonization.