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ecological open system, characterized with relationships of predation, parasitism between organisms of various species providing their sustainable existence within a cert

index for measuring of extent of the species’ differentiation by gradients of a habitat, i.e. rate of changes in phytocenosis flora composition by dimensional and ecologi

species quantitatively dominating in a given community, as a rule, in comparison with alike forms or at all events included in one level of ecological pyramid or vegetati

a number of various types of biological plants or phenomena and frequency of their meeting on a fixed portion of space and time generally reflecting a complicated form of