A biological community is
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Community, also called biological community, in biology, an interacting group of various species in a common location. For example, a forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a biological community.All the populations living and interacting within a particular geographic area make up a biological (or biotic) community. ... The living organisms in a community together with their nonliving or abiotic environment make up an ecosystem .Species Interactions, Food Webs, and Ecological Communities. An ecological community is defined as a group of actually or potentially interacting species living in the same place. ... River food webs in forested headwater streams are good examples of this.
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Explanation:
Community, also called biological community, in biology, an interacting group of various species in a common location. For example, a forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a biological community.
Among the factors that determine the overall structure of a community are the number of species (diversity) within it, the number of each species (abundance) found within it, the interactions among the species, and the ability of the community to return to normal after a disruptive influence such as fire or drought. The change of biological communities over time is known as succession, or ecological succession.The various species in a community each occupy their own ecological niche. The niche of a species includes all of its interactions with other members of the community, including competition, predation, parasitism, and mutualism.
The organisms within a community can be positioned along food chains by showing which eats which, and these positions are known as trophic levels. The first level includes the producers—the photosynthetic plants—which convert the Sun’s radiant energy into nutrients available to other organisms in the community. These plants are eaten by herbivores (plant-eaters, or primary consumers), the second trophic level. Herbivores are, in turn, eaten by carnivores (flesh-eaters), which are frequently eaten by larger carnivores (secondary and tertiary consumers, respectively). The food chain ends when the last link dies and is attacked by various bacteria and fungi, the decomposers that break down dead organic matter and thereby release essential nutrients back into the environment.