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Author (up) Letort, V.; Heuret, P.; Zalamea, P.-C.; De Reffye, P.; Nicolini, E. url  openurl
  Title Analysing the effects of local environment on the source-sink balance of Cecropia sciadophylla: A methodological approach based on model inversion Type Journal Article
  Year 2012 Publication Annals of Forest Science Abbreviated Journal Ann. Forest Sci.  
  Volume 69 Issue 2 Pages 167-180  
  Keywords Cecropia; Functional-structural model; Model inversion; Morphology; Trophic competition  
  Abstract Context Functional-structural models (FSM) of tree growth have great potential in forestry, but their development, calibration and validation are hampered by the difficulty of collecting experimental data at organ scale for adult trees. Due to their simple architecture and morphological properties, “model plants” such as Cecropia sciadophylla are of great interest to validate new models and methodologies, since exhaustive descriptions of their plant structure and mass partitioning can be gathered. Aims Our objective was to develop a model-based approach to analysing the influence of environmental conditions on the dynamics of trophic competition within C. sciadophylla trees. Methods We defined an integrated environmental factor that includes meteorological medium-frequency variations and a relative index representing the local site conditions for each plant. This index is estimated based on model inversion of the GreenLab FSM using data from 11 trees for model calibration and 7 trees for model evaluation. Results The resulting model explained the dynamics of biomass allocation to different organs during the plant growth, according to the environmental pressure they experienced. Perspectives By linking the integrated environmental factor to a competition index, an extension of the model to the population level could be considered. © INRA and Springer Science+Business Media B.V. 2011.  
  Address UMR ECOFOG Campus Agronomique, INRA, BP 316, 97379 Kourou cedex, French Guiana  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 12864560 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Cited By (since 1996): 1; Export Date: 20 June 2012; Source: Scopus; Coden: Afosf; doi: 10.1007/s13595-011-0131-x; Language of Original Document: English; Correspondence Address: Letort, V.; Department of Applied Mathematics and Systems (MAS), Ecole Centrale Paris, Grande voie des Vignes, Chatenay-Malabry 92295, France; email: Approved no  
  Call Number EcoFoG @ webmaster @ Serial 405  
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