Keystone species

Definition

Keystone species are organisms that have a disproportionately large impact on their ecosystem relative to their abundance. They play a crucial role in maintaining the structure and function of an ecosystem.

Related terms

Trophic cascade: A trophic cascade occurs when changes in the population size of one species at one trophic level result in indirect effects on other trophic levels.

Ecological niche: An ecological niche refers to the specific role and position that a species has within its environment, including its interactions with other organisms and its use of resources.

Indicator species: Indicator species are organisms whose presence, absence, or abundance can provide information about certain environmental conditions or changes.