A trophic cascade is one of the ecological phenomena which are being triggered by either the addition or removal of top predators or consumers. Trophic cascade involves the reciprocal variations in the populations of predators/consumers and prey in the food chain. These variations eventually lead to drastic changes in the structure of the ecosystem as well as in the recycling of nutrients.
When the number of carnivores is increased, the number of herbivores is decreased and consequently, the population of primary producers such as plants and phytoplankton is increased. Trophic cascade also influences plant production, nutrients’ recycling, producer communities, and their metabolic rates.
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