The process of self-regulation of biogeocenosis is manifested in the fact that the entire diversity of its population exists together, not completely destroying each other, but only limiting the number of individuals of each species of a certain level. For example, in the forest, several hundred species of insects feed on the leaves of woody plants, but under optimal conditions each species is represented by a small number of individuals, so their general activity does not cause significant harm to forest trees. However, insects are very fertile, and if there were no limiting factors (adverse weather conditions, destruction by predatory and parasitic insects, birds, pathogens, etc.), the number of any type of insects would increase very quickly and lead to the destruction of the ecosystem. Consequently, predator – prey, parasite – host relationships mutually smooth out the surge in numbers and stabilize the ecosystem.
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