APES - Unit 2 Biodiversity

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What is an r-strategist species?

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An r-strategist species is one that reproduces quickly and in large numbers, often at the expense of parental care. Example: dandelion.

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What is ecological tolerance?

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Ecological tolerance refers to the total range of abiotic conditions that an organism can withstand.

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What does the Theory of Island Biogeography state?

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The Theory of Island Biogeography states that there are more species on islands that are larger and closer to the mainland.

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What is species diversity?

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Species diversity refers to the number of different species and their abundance in a community.

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What are supporting services in ecosystems?

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Supporting services are ecosystem services that support human life and life on Earth, such as producing oxygen and water cycling.

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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.

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Define biodiversity.

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Biodiversity is 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 are limiting factors?

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Limiting factors are environmental conditions that restrict the growth, abundance, or distribution of an organism or a population.

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What is the difference between primary and secondary succession?

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Primary succession occurs in lifeless areas where soil has not yet formed, while secondary succession occurs in areas where a disturbance has destroyed an existing community but soil remains.

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What is an ecosystem service?

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Ecosystem services are the benefits that humans derive from ecosystems, including provisioning, regulating, cultural, and supporting services.