Decoupled leaf and stem economics in rain forest trees

Baraloto Christopher, Paine C. E. Timothy, Poorter Lourens, Beauchêne Jacques, Bonal Damien, Domenach Anne-Marie, Hérault Bruno, Patiño Sandra, Roggy Jean-Christophe, Chave Jérôme. 2010. Decoupled leaf and stem economics in rain forest trees. Ecology Letters, 13 (11) : pp. 1338-1347.

Journal article ; Article de revue à facteur d'impact
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Quartile : Outlier, Sujet : ECOLOGY

Abstract : Cross-species analyses of plant functional traits have shed light on factors contributing to differences in performance and distribution, but to date most studies have focused on either leaves or stems. We extend these tissue-specific analyses of functional strategy towards a whole-plant approach by integrating data on functional traits for 13 448 leaves and wood tissues from 4672 trees representing 668 species of Neotropical trees. Strong correlations amongst traits previously defined as the leaf economics spectrum reflect a tradeoff between investments in productive leaves with rapid turnover vs. costly physical leaf structure with a long revenue stream. A second axis of variation, the 'stem economics spectrum', defines a similar tradeoff at the stem level: dense wood vs. high wood water content and thick bark. Most importantly, these two axes are orthogonal, suggesting that tradeoffs operate independently at the leaf and at the stem levels. By simplifying the multivariate ecological strategies of tropical trees into positions along these two spectra, our results provide a basis to improve global vegetation models predicting responses of tropical forests to global change. (Résumé d'auteur)

Mots-clés Agrovoc : Forêt tropicale humide, Feuille, Adaptation, Densité du peuplement, Tige, Analyse multivariée, Physiologie végétale, Anatomie végétale, Écologie, Modèle végétal, Méthode d'optimisation

Mots-clés géographiques Agrovoc : Guyane française

Classification Agris : K01 - Forestry - General aspects
U10 - Computer science, mathematics and statistics
F40 - Plant ecology
F50 - Plant structure
F62 - Plant physiology - Growth and development

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

  • Baraloto Christopher, INRA (GUF)
  • Paine C. E. Timothy, University of Florida (USA)
  • Poorter Lourens, Wageningen University (NLD)
  • Beauchêne Jacques, CIRAD-ES-UMR Ecofog (GUF) ORCID: 0000-0003-4578-3670
  • Bonal Damien, INRA (GUF)
  • Domenach Anne-Marie, CIRAD-ES-UMR Ecofog (GUF)
  • Hérault Bruno, UAG (GUF) ORCID: 0000-0002-6950-7286
  • Patiño Sandra, University of Leeds (GBR)
  • Roggy Jean-Christophe, CIRAD-ES-UMR Ecofog (GUF)
  • Chave Jérôme, CNRS (FRA)

Source : Cirad - Agritrop (

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