SEV2.c Ecological Succession

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What is a keystone species?

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A keystone species is a species that has a disproportionately large effect on its environment relative to its abundance. Its presence is critical for maintaining the structure of an ecological community.

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How do invasive species impact ecosystems?

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Invasive species compete with native species for resources, often harming them and disrupting the balance of the ecosystem.

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What is the grass stage in ecological succession?

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The grass stage is the early stage of ecological succession where grasses dominate the area. It is considered the least stable stage due to its vulnerability to disturbances.

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What is primary succession?

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Primary succession is the process of ecological change that occurs in an area that was previously devoid of life, such as after a volcanic eruption or glacier retreat.

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What is secondary succession?

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Secondary succession is the process of ecological change that occurs in an area that has been disturbed but where soil and some organisms still exist, such as after a forest fire.

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What role do indicator species play in an ecosystem?

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Indicator species are organisms whose presence, absence, or abundance reflects a specific environmental condition, helping to assess the health of an ecosystem.

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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 community.

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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.

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What factors can influence the rate of ecological succession?

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Factors influencing the rate of ecological succession include climate, soil type, availability of species, and disturbances such as fires or human activities.

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What is the difference between primary and secondary succession?

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Primary succession occurs in lifeless areas without soil, while secondary succession occurs in areas where a disturbance has destroyed an existing community but soil remains.