The Principle of Competitive Exception in a Two-Species Community with One Metabolic Regulation Factor

Abstract

The validity of the competitive exclusion principle (the Gause's principle) at one metabolic regulation factor is demonstrated for a general model of two-species community. The competitive exclusion principle postulates that a long-term coexistence of species is impossible if their number exceeds the number of density-dependent growth-regulating factors. Previously, this principle was proved for the stationary states in a general model of a community with any number of factors. In the dynamic modes, the number of species in a community may exceed the number of regulating factors. However, under the influence of one factor, only one species survives.

Control Factors for the Equilibrium Composition of Microbial Communities in Open Systems: Theory and Experiments

“…The result of coexistence obtained here is similar to the results obtained by other authors addressing regulation via DDGCFs, but the present rule of coexistence includes not only limitation by substrate, but also a large number of other interspecific relationships. The broader condition of species coexistence obviously leads to an extended interpretation of Gause's principle [27]: not only the single limiting resource-substrate but also any other RF prevents the two species from living together.…”

A plankton community: a zooplankton effect in phytoplankton dynamics

“…Таким образом, выявлено большое разнообразие динамических режимов фитопланктона, возникающих в результате влияния зоопланктона. В лабораторных экспериментах качественное разнообразие динамики фитопланктона действительно наблюдается [Degermendzhi, Abakumov, 2018], в природных фитосообществах известны явления «цветения» -качественного изменения типа динамики биомасс, причины которого не вполне изучены [Spilling, Markager, 2008].…”