Definition of keystone species in English:

keystone species

Syllabification: key·stone spe·cies

noun (plural same)

  • A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
    More example sentences
    • Well, you remove a keystone species and the entire ecosystem can collapse.
    • A keystone species in several ecosystems, the grizzly was listed in 1975 as threatened in the lower 48 states.
    • Meanwhile the keystone species of the entire ecosystem - the humble capelin - has again become the target of a sizeable fishery.

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Word of the day skosh
Pronunciation: skōSH
noun
a small amount; a little