APES Unit 2 Review

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What is species evenness?

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Species evenness refers to the relative abundance of different species in a community. It measures how evenly the individuals are distributed among the species present.

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What is species richness?

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Species richness is the number of different species present in a given area or community.

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What is the main cause of biodiversity loss worldwide?

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The main cause of biodiversity loss worldwide is habitat destruction.

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What is ecological succession?

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Ecological succession is the process of change in the species structure of an ecological community over time.

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What is primary succession?

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Primary succession is the ecological succession that occurs in an area where no soil exists, 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 ecological succession that occurs in an area where a disturbance has destroyed an existing community but left the soil intact.

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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 of species composition.

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What are invasive species?

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Invasive species are non-native species that spread widely in a new habitat and can cause harm to the environment, economy, or human health.

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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 diversity of species, genetic variation, and ecosystem diversity.

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What is the role of keystone species?

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Keystone species are species that have a disproportionately large effect on their environment relative to their abundance, playing a critical role in maintaining the structure of an ecological community.