Species with an unusually large ecosystem effect

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Your new ahaKeystone species

A keystone species has effects large relative to its abundance. Source: Keystone species ↗

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31Non-native species causing ecological harmRECALL
Invasive species
Not every introduced species is invasive
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32Variety of life in an areaRECALL
Biodiversity
Includes genes, species and ecosystems
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33Transition zone between ecosystemsRECALL
Ecotone
Supports species from both
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