Characterizing the balance between ontogeny and environmental constraints in forest tree development using growth phase duration distributions

Yann Guédon (1, 2) , Olivier Taugourdeau (3) , Yves Caraglio (3) , Sylvie Sabatier (3)

1 VIRTUAL PLANTS - Modeling plant morphogenesis at different scales, from genes to phenotype
2 UMR DAP - Développement et amélioration des plantes
3 UMR AMAP - Botanique et Modélisation de l'Architecture des Plantes et des Végétations

We built segmentation models to identify tree growth phases on the basis of retrospective measurement of annual shoot characteristics along the main stem. Growth phase duration distributions estimated within these models characterize the balance between ontogeny and environmental constraints in tree development at the population scale. These distributions have very contrasted characteristics in terms of shape and relative dispersion between ontogeny-driven and environment-driven tree development.

Mots clés: developmental plasticity; growth trajectory; hidden semi-Markov chain; segmentation model

Domaines: Modélisation et simulation

Yann Guédon, Olivier Taugourdeau, Yves Caraglio, Sylvie Sabatier. Characterizing the balance between ontogeny and environmental constraints in forest tree development using growth phase duration distributions. 7th International Conference on Functional-Structural Plant Models, Jun 2013, Saariselkä, Finland. pp.237-239. ⟨hal-00850838⟩