Last Updated
：2025/11/23
keystone species
（ plural ）
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(ecology) A species that exerts a large, stabilizing influence throughout an ecological community, despite its relatively small numerical abundance.
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keystone species
Sea otters are a keystone species that help maintain kelp forest ecosystems by preying on sea urchins.
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Sea otters are a keystone species that help maintain kelp forest ecosystems by preying on sea urchins.
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