Invasive and Keystone Species

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What is an invasive species?

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A species that is not native to an area and can cause harm to the environment, economy, or human health.

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Why do invasive species grow quickly in new environments?

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Invasive species have no natural predators in their new environment, allowing their populations to grow rapidly.

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What is a keystone species?

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A species that has a disproportionately large effect on its environment relative to its abundance, helping to maintain biodiversity.

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How do invasive species impact ecosystems?

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They can disrupt food webs, outcompete native species, and lead to a decline in biodiversity.

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What is one example of an invasive species?

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Zebra Mussel, which harms native fish, clogs pipes, and damages beaches.

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What is the difference between native and invasive species?

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Native species are those that naturally occur in an area, while invasive species are introduced and can cause harm.

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What are some economic impacts of invasive species?

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They can damage crops, fisheries, and infrastructure, leading to increased costs for management and loss of revenue.

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What role do keystone species play in an ecosystem?

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They help control populations of other species, ensuring a balanced ecosystem.

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Can invasive species ever be beneficial?

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In some cases, they may provide new resources or fill ecological roles, but generally, they are harmful.

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What is an example of a keystone species?

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Sea otters, which help control sea urchin populations and maintain kelp forest ecosystems.