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The role of size inequality in self-thinning: A pattern-oriented simulation model for arid savannas

Author

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  • Wiegand, Kerstin
  • Saltz, David
  • Ward, David
  • Levin, Simon A.

Abstract

The self-thinning line is a very robust pattern, which can be obtained in modeling studies by a variety of different mechanistic assumptions. Our opinion is that we can only advance in our understanding of mechanisms leading to the self-thinning relationship if we demand that the model also reproduces several other characteristic features (patterns) of the self-thinning process such as the degree of size inequality and the average size. We use a pattern-oriented modeling approach to develop a model of self-thinning under size inequality in overcrowded, even-aged stands, which reproduces these three patterns simultaneously. Our approach is to first develop an initial model based on our current ecological knowledge and then to refine the model by modifying the initial model to derive the model that reproduces all patterns of interest.

Suggested Citation

  • Wiegand, Kerstin & Saltz, David & Ward, David & Levin, Simon A., 2008. "The role of size inequality in self-thinning: A pattern-oriented simulation model for arid savannas," Ecological Modelling, Elsevier, vol. 210(4), pages 431-445.
    • Handle: RePEc:eee:ecomod:v:210:y:2008:i:4:p:431-445
    DOI: 10.1016/j.ecolmodel.2007.08.027
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    References listed on IDEAS

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    Cited by:

    1. Moustakas, Aristides & Sakkos, Konstantinos & Wiegand, Kerstin & Ward, David & Meyer, Katrin M. & Eisinger, Dirk, 2009. "Are savannas patch-dynamic systems? A landscape model," Ecological Modelling, Elsevier, vol. 220(24), pages 3576-3588.
    2. Arnold, S. & Attinger, S. & Frank, K. & Hildebrandt, A., 2015. "Assessing the structural adequacy of alternative ecohydrological models using a pattern-oriented approach," Ecological Modelling, Elsevier, vol. 316(C), pages 52-61.
    3. Accatino, Francesco & Wiegand, Kerstin & Ward, David & De Michele, Carlo, 2016. "Trees, grass, and fire in humid savannas—The importance of life history traits and spatial processes," Ecological Modelling, Elsevier, vol. 320(C), pages 135-144.

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