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keystone species

noun

ˈkiː.stəʊn ˈspiː.ʃiːz

Meaning

A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

Wolves are a keystone species that regulate prey populations.

essential species, foundational species, ecosystem regulator

non-essential species, minor species, dispensable

a picture or design made using paint

depraved or wicked behavior or character

the action of inventing something; a thing that is invented; a creative discovery

The investigation of outer space by means of manned and unmanned spacecraft.

The natural home or environment of an animal, plant, or other organism.

Buses powered by hydrogen fuel cells that produce only water vapor as emission.