Predicting Ecosystem Response to Perturbation from Thermodynamic Criteria

Details Predicting Ecosystem Response to Perturbation from Thermodynamic Criteria Predicting Ecosystem Response to Perturbation from Thermodynamic Criteria

2008-09-25

arxiv.org/abs/0809.4305v1

Physics

Biological Physics

25 pages, 4 figures

Scientific paper

The response of ecosystems to perturbations is considered from a thermodynamic perspective by acknowledging that, as for all macroscopic systems and processes, the dynamics and stability of ecosystems is subject to definite thermodynamic law. For open ecosystems, exchanging energy, work, and mass with the environment, the thermodynamic criteria come from non-equilibrium or irreversible thermodynamics. For ecosystems during periods in which the boundary conditions may be considered as being constant, it is shown that criteria from irreversible thermodynamic theory are sufficient to permit a quantitative prediction of ecosystem response to perturbation. This framework is shown to provide a new perspective on the population dynamics of real ecosystems. The formalism is applied to the problem of the population oscillations of the southern pine beetle.

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