Understanding Community Stability and Succession

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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 where no soil exists, such as after a volcanic eruption or glacier retreat, starting on bare rock.

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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 where soil is present but has been disturbed, such as after a forest fire or human activity.

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What is the main difference between primary and secondary succession?

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Primary succession starts on bare rock, while secondary succession occurs on existing soil.

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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 and function of an ecosystem, such as a volcanic eruption, introduction of a new species, or seasonal changes.

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How can disturbances impact biodiversity?

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Disturbances can increase biodiversity by creating new habitats and opportunities for different species to thrive.

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What is biodiversity?

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Biodiversity refers to the variety of life in a particular habitat or ecosystem, including the number of different species and their interactions.

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What is a keystone species?

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A keystone species is a species that has a disproportionately large impact on its ecosystem relative to its abundance, often maintaining the structure of the community.

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How does high biodiversity affect ecosystem resilience?

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High biodiversity increases resilience to disturbances, allowing ecosystems to recover more quickly from changes.

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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 from pioneer species to a mature community.

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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 lichens or mosses that can grow on bare rock.