Simulation of morphological plasticity of Acacia tortilis in response to herbivore attacks

Mathieu Amélie, Letort Véronique, Gosset Renaud, Gignoux Jacques, Cournède Paul-Henry. 2010. Simulation of morphological plasticity of Acacia tortilis in response to herbivore attacks. In : Plant growth modeling and applications. Proceedings PMA09 : The Third International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications, Beijing, China, 9-13 November 2009. Li Baoguo (ed.), Jaeger Marc (ed.), Guo Yan (ed.). China Agricultural University, CIRAD. Los Alamitos : IEEE Computer Society, 115-118. ISBN 978-0-7695-3988-1 International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications (PMA09). 3, Pékin, Chine, 9 Novembre 2009/13 Novembre 2009.

Résumé : Understanding tree architectural plasticity is a major challenge. Functional-structural models can be of great interest to quantify the allocation patterns and their changes according to environment. In this paper, we focus on Acacia tortilis trees in savanna to understand their responses to herbivore attacks both in terms of architecture and allocation pattern. Measurements were carried out in Hwange National Park (Zimbabwe) in 2008. Architectural and biomass data were analysed to quantify the effects of herbivore attacks on plant morpho-genesis, and trees were gathered in two groups depending on the intensity of herbivore attacks they suffered. Based on these results, a simple model of herbivore attacks has been implemented and parameters have been estimated in the framework of the GreenLab model and we simulate different realistic behaviours according to the intensity of herbivore attacks.

Mots-clés Agrovoc : Acacia tortilis, adaptation, relation plante animal, anatomie végétale, développement biologique, modèle mathématique, modèle de simulation

Mots-clés géographiques Agrovoc : Zimbabwe

Classification Agris : U10 - Informatique, mathématiques et statistiques
F50 - Anatomie et morphologie des plantes

Auteurs et affiliations

• Mathieu Amélie, Ecole centrale Paris (FRA)
• Letort Véronique, Ecole centrale Paris (FRA)
• Gosset Renaud, INRIA (FRA)
• Gignoux Jacques, ENS (FRA)
• Cournède Paul-Henry, Ecole centrale Paris (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/556066/)

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