Species Abundance Adapted to the Energy Flow in Ecosystem Simulation

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4 Author(s)

The numerical models featuring energy flow between soil, plant and herbivore are examined. The goal of this work is to observe the relationship between body size and species abundance of the herbivore, resulting from adaptive behavior of population. The species in the simulations are defined by the parameter of energy flux between organisms and replication strategies. Our result shows that the individual behavior builds up the distribution of species abundance resembling that of real ecosystem under the various conditions. This means that the amount of available resources affects not only the number of organisms, but also the adaptive behavior of the population in a local ecosystem. The observed adaptation in the present simulation study therefore indicates that there are more sustainable strategies than one under a given condition. The modelling technique presented here can also be applied to more detailed ecosystem simulations.