Invasive and Keystone Species

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What is an invasive species?

Back

An organism that is NOT native to an area and causes harm to the environment/humans.

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Invasive species have a negative impact on...

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Both the ecosystem and the economy.

Front

A species that is not native to an area is called:

Back

Invasive Species.

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What is species diversity?

Back

The different living things (plants and animals) in an area.

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What do trophic cascades refer to?

Back

Impacts that reach beyond adjacent trophic levels.

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What is a keystone species?

Back

A species that has a disproportionately large effect on its environment relative to its abundance.

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Why are invasive species a concern for ecosystems?

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They can outcompete native species for resources, disrupt food webs, and alter habitats.

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What is the difference between native and invasive species?

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Native species are organisms that naturally occur in an area, while invasive species are not native and can cause harm.

Front

Give an example of an invasive species.

Back

The zebra mussel is an example of an invasive species that disrupts aquatic ecosystems.

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What role do keystone species play in an ecosystem?

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They help maintain the structure of an ecosystem by regulating populations of other species.