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Biological age from the viewpoint of the thermodynamic theory of ecological systems

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  • Alexandrov, G.A
  • Golitsyn, G.S.

Abstract

Not all ecosystems are in a steady-state or approaching it. Some of them merely pass through the life-cycle stages. The best example is the forest ecosystems formed by even-aged forest stands, where ecosystem properties and functions are related to the stand age. The relationship is not strict, however, and so the stand age is not a general measure of ecosystem state. We propose and theoretically justify a thermodynamic measure for ecosystem state, which is named here as ecosystem biological age and defined as the period of time that some reference ecosystem needs to accumulate the same amount of exergy as the ecosystem under concern. The use of the concept is illustrated by analyzing the 30-year observations of larch stands growth.

Suggested Citation

  • Alexandrov, G.A & Golitsyn, G.S., 2015. "Biological age from the viewpoint of the thermodynamic theory of ecological systems," Ecological Modelling, Elsevier, vol. 313(C), pages 103-108.
    • Handle: RePEc:eee:ecomod:v:313:y:2015:i:c:p:103-108
    DOI: 10.1016/j.ecolmodel.2015.06.022
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    References listed on IDEAS

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    1. Rasche, Livia & Fahse, Lorenz & Zingg, Andreas & Bugmann, Harald, 2012. "Enhancing gap model accuracy by modeling dynamic height growth and dynamic maximum tree height," Ecological Modelling, Elsevier, vol. 232(C), pages 133-143.
    2. Alexandrov, Georgii A., 2008. "Forest growth in the light of the thermodynamic theory of ecological systems," Ecological Modelling, Elsevier, vol. 216(2), pages 102-106.
    3. Armstrong, Doug P. & Brooks, Ronald J., 2013. "Application of hierarchical biphasic growth models to long-term data for snapping turtles," Ecological Modelling, Elsevier, vol. 250(C), pages 119-125.
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    5. Maclean, Heather & Dochain, Denis & Waters, Geoffrey & Stasiak, Michael & Dixon, Mike & Van Der Straeten, Dominique, 2012. "A model development approach to ensure identifiability of a simple mass balance model for photosynthesis and respiration in a plant growth chamber," Ecological Modelling, Elsevier, vol. 246(C), pages 105-118.
    6. Fath, Brian D., 2014. "Sustainable systems promote wholeness-extending transformations: The contributions of systems thinking," Ecological Modelling, Elsevier, vol. 293(C), pages 42-48.
    7. Anyomi, Kenneth A. & Raulier, Frédéric & Mailly, Daniel & Girardin, Martin P. & Bergeron, Yves, 2012. "Using height growth to model local and regional response of trembling aspen (Populus tremuloides Michx.) to climate within the boreal forest of western Québec," Ecological Modelling, Elsevier, vol. 243(C), pages 123-132.
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    Cited by:

    1. Jørgensen, Sven E. & Nielsen, Søren Nors & Fath, Brian D., 2016. "Recent progress in systems ecology," Ecological Modelling, Elsevier, vol. 319(C), pages 112-118.

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