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What role does a keystone species have in its ecosystem?

Answer :

Final answer:

Keystone species are vital organisms in ecosystems that have a large impact on their environment. They help maintain ecological balance, and their removal can lead to drastic changes in biodiversity and ecosystem health. Examples include sea otters, gray wolves, and beavers, which all play critical roles in their habitats.


Explanation:

Role of a Keystone Species in an Ecosystem

A keystone species is a critical organism within an ecosystem that has a disproportionately large effect on its environment relative to its abundance. The presence and activities of a keystone species can shape the structure, composition, and function of the community it inhabits.

Examples of Keystone Species

  • Sea Otters: They maintain the balance of kelp forest ecosystems. By preying on sea urchins, which feed on kelp, sea otters prevent the overgrazing of kelp and promote biodiversity.
  • Gray Wolves: In Yellowstone National Park, the reintroduction of gray wolves has helped control deer populations. This regulation allows vegetation like willow and aspen to thrive, which in turn supports other wildlife.
  • Beavers: Known as ecosystem engineers, beavers create dams that lead to the formation of wetlands. These habitats support a variety of plant and animal species, enhancing biodiversity.

Keystone species are vital for maintaining the ecological balance. Their removal can lead to significant changes or even collapse of the ecosystem, illustrating their importance in biological communities.


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