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Simulation and analysis of an individual-based model for graph-structured plant dynamics

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  • Campillo, F.
  • Champagnat, N.

Abstract

We propose a stochastic individual-based model of graph-structured population, viewed as a simple model of clonal plants. The dynamics is modeled in continuous time and space, and focuses on the effects of the network structure of the plant on the growth strategy of ramets. This model is coupled with an explicit advection-diffusion dynamics for resources. After giving a simulation scheme of the model, the capacity of the model to reproduce specific features of clonal plants, such as their efficiency to forage resources and colonize an empty field by means of phalanx or guerrilla strategies, is numerically studied. Next, we propose a large population approximation of the model for phalanx-type populations, taking the form of an advection-diffusion partial differential equation for population densities, where the influence of the local graph structure of the plant takes the form of a nonlinear dependence in the gradient of resources.

Suggested Citation

  • Campillo, F. & Champagnat, N., 2012. "Simulation and analysis of an individual-based model for graph-structured plant dynamics," Ecological Modelling, Elsevier, vol. 234(C), pages 93-105.
    • Handle: RePEc:eee:ecomod:v:234:y:2012:i:c:p:93-105
    DOI: 10.1016/j.ecolmodel.2012.03.017
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    References listed on IDEAS

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    1. Mony, C. & Garbey, M. & Smaoui, M. & Benot, M.-L., 2011. "Large scale parameter study of an individual-based model of clonal plant with volunteer computing," Ecological Modelling, Elsevier, vol. 222(4), pages 935-946.
    2. J.A.J. Metz & S.A.H. Geritz & G. Meszena & F.J.A. Jacobs & J.S.van Heerwaarden, 1995. "Adaptive Dynamics: A Geometrical Study of the Consequences of Nearly Faithful Reproduction," Working Papers wp95099, International Institute for Applied Systems Analysis.
    3. Oborny, Beáta & Englert, Péter, 2012. "Plant growth and foraging for a patchy resource: A credit model," Ecological Modelling, Elsevier, vol. 234(C), pages 20-30.
    4. U. Dieckmann & R. Law, 1996. "The Dynamical Theory of Coevolution: A Derivation from Stochastic Ecological Processes," Working Papers wp96001, International Institute for Applied Systems Analysis.
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    Cited by:

    1. Fritsch, Coralie & Harmand, Jérôme & Campillo, Fabien, 2015. "A modeling approach of the chemostat," Ecological Modelling, Elsevier, vol. 299(C), pages 1-13.
    2. Oborny, B. & Mony, C. & Herben, T., 2012. "From virtual plants to real communities: A review of modelling clonal growth," Ecological Modelling, Elsevier, vol. 234(C), pages 3-19.

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