Biotic Environmental Factors

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Biotic Environmental Factors


the aggregate of influences exerted on organisms by the life processes of other organisms.

These influences are extremely varied. Living things may be a source of food for other organisms, serve as a habitat (as host for parasites), aid reproduction (the activity of pollinating animals), or have chemical (toxins, bacteria), mechanical, and other effects. Unlike abiotic environmental factors, the action of biotic factors is manifested by the interaction of different species of organisms with others. For example, plants release oxygen which is needed for the respiration of animals, while animals ensure the entry of carbon dioxide into the atmosphere; carbon dioxide is used by plants in the process of photosynthesis. The activity of predators affects the dynamics of the abundance of their prey, and this affects, in turn, the size of predatory populations. The effect of biotic factors can be both direct and indirect, being reflected in the change in conditions of the surrounding inanimate environment (change in bacterial composition of the soil or change in the microclimate in a forest).


Naumov, N. P. Ekologiia zhivotnykh. Moscow, 1955.
Makfed’en, E. Ekologiia zhivotnykh: tseli i metody. Moscow, 1965. (Translated from English.)


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
Mentioned in ?
References in periodicals archive ?
Interactions with other organisms for example, infection or mechanical damage by herbivory or trampling, as well as effects of symbiosis or parasitism are consequences of biotic environmental factors. The parameters and resources that govern the growth of a plant such as temperature, humidity, light intensity, the supply of water and minerals, and C[O.sub.2] are comprised in abiotic environmental factors.
The rotifer community variations were correlated with changes in abiotic and biotic environmental factors. Abiotic factors affected the rotifers directly or indirectly.
Other topics discussed include environmental limitations and general impact on properties of the catch, benefits of seafood consumption, allergens, biotic environmental factors affecting seafood quality, and tracing the catch through China.