Diversity and plasticity of leaf traits in tropical rain forest : a cost/benefit analysis of carbon gain

Sabrina Coste
Abstract : The aim of this research were (i) identify the main trade-off and covariations of a group of leaf traits related to carbon assimilation, and (ii) assess the irradiance-elicited plasticity, and test whether this plasticity differs among species of tropical rain forest. Measurements were made with saplings from 13 species growing under three levels of irradiance, provided by shading nets, in an open green-house. A cost benefit analysis was undertaken to quantify carbon balance of leaves metamers. Construction costs of metamers (CCmetm), payback time of the investment of carbon into leaf and metamer structure (PBT), and leaf life span (LLS) were recorded on the saplings. A large inter-specific diversity was recorded for all the traits, the species are scattered along a principal component axis opposing on one hand LSS and leaf mass-to-area ratio (LMA), and on the other hand, photosynthetic capacity, photosynthetic nitrogen use efficiency (angnp1033PNUE), respiration (Rd) and leaf nitrogen content (N). These results are in agreement with the concept of
Document type :
Theses
Complete list of metadatas

https://pastel.archives-ouvertes.fr/pastel-00004645
Contributor : Ecole Agroparistech <>
Submitted on : Tuesday, May 12, 2009 - 8:00:00 AM
Last modification on : Tuesday, May 12, 2009 - 8:00:00 AM
Long-term archiving on : Tuesday, July 27, 2010 - 8:16:09 PM

Identifiers

  • HAL Id : pastel-00004645, version 1

Collections

Citation

Sabrina Coste. Diversity and plasticity of leaf traits in tropical rain forest : a cost/benefit analysis of carbon gain. Life Sciences [q-bio]. AgroParisTech, 2008. English. ⟨NNT : 08AGPT0046⟩. ⟨pastel-00004645⟩

Share

Metrics

Record views

388

Files downloads

850