Ecological succession as an energy dispersal process

Bio Systems
Peter Würtz, Arto Annila

Abstract

Ecological succession is described by the 2nd law of thermodynamics. According to the universal law of the maximal energy dispersal, an ecosystem evolves toward a stationary state in its surroundings by consuming free energy via diverse mechanisms. Species are the mechanisms that conduct energy down along gradients between repositories of energy which consist of populations at various thermodynamic levels. The salient characteristics of succession, growing biomass production, increasing species richness and shifting distributions of species are found as consequences of the universal quest to diminish energy density differences in least time. The analysis reveals that during succession the ecosystem's energy transduction network, i.e., the food web organizes increasingly more effective in the free energy reduction by acquiring new, more effective and abandoning old, less effective species of energy transduction. The number of species does not necessarily peak at the climax state that corresponds to the maximum-entropy partition of species maximizing consumption of free energy. According to the theory of evolution by natural selection founded on statistical physics of open systems, ecological succession is one among many other ev...Continue Reading

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Citations

Mar 4, 2014·PloS One·Alice Boit, Ursula Gaedke
Apr 22, 2014·Theory in Biosciences = Theorie in Den Biowissenschaften·Youhua Chen
Oct 16, 2012·Bio Systems·Arto Annila, Erkki Annila
Oct 30, 2010·Physics of Life Reviews·Teemu Mäkelä, Arto Annila

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