Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/26687
Title: Functional traits shape ontogenetic growth trajectories of rain forest tree species
Contributor(s): Herault, Bruno (author); Bachelot, Benedicte (author); Poorter, Lourens (author); Rossi, Vivien (author); Bongers, Frans (author); Chave, Jerome (author); Paine, C E Timothy  (author)orcid ; Wagner, Fabien (author); Baraloto, Christopher (author)
Publication Date: 2011-11
Early Online Version: 2011-08-23
DOI: 10.1111/j.1365-2745.2011.01883.x
Handle Link: https://hdl.handle.net/1959.11/26687
Abstract: 1. Functional traits are posited to explain interspecific differences in performance, but these relationships are difficult to describe for long-lived organisms such as trees, which exhibit strong ontogenetic changes in demographic rates. Here, we use a size-dependent model of tree growth to test the extent to which of 17 functional traits related to leaf and stem economics, adult stature and seed size predict the ontogenetic trajectory of tree growth. 2. We used a Bayesian modelling framework to parameterize and contrast three size-dependent diameter growth models using 16-years of census data from 5524 individuals of 50 rain forest tree species: a size-dependent model, a size-dependent model with species-specific parameters and a size-dependent model based on functional traits. 3. Most species showed clear hump-shaped ontogenetic growth trajectories and, across species, maximum growth rate varied nearly tenfold, from 0.58 to 5.51mm year⁻¹. Most species attained their maximum growth at 60% of their maximum size, whereas the magnitude of ontogenetic changes in growth rate varied widely among species. 4. The Trait-Model provided the best compromise between explained variance and model parsimony and needed considerably fewer parameters than the model with species terms. 5. Stem economics and adult stature largely explained interspecific differences in growth strategy. Maximum absolute diameter growth rates increased with increasing adult stature and leaf δ¹³C and decreased with increasing wood density. Species with light wood had the greatest potential to modulate their growth, resulting in hump-shaped ontogenetic growth curves. Seed size and leaf economics, generally thought to be of paramount importance for plant performance, had no significant relationships with the growth parameters. 6. Synthesis. Our modelling approach offers a promising way to link demographic parameters to their functional determinants and hence to predict growth trajectories in species-rich communities with little parameter inflation, bridging the gap between functional ecology and population demography.
Publication Type: Journal Article
Source of Publication: Journal of Ecology, 99(6), p. 1431-1440
Publisher: Wiley-Blackwell Publishing Ltd
Place of Publication: United Kingdom
ISSN: 1365-2745
0022-0477
Fields of Research (FoR) 2008: 060202 Community Ecology (excl. Invasive Species Ecology)
Fields of Research (FoR) 2020: 310302 Community ecology (excl. invasive species ecology)
Socio-Economic Objective (SEO) 2008: 960806 Forest and Woodlands Flora, Fauna and Biodiversity
Socio-Economic Objective (SEO) 2020: 180606 Terrestrial biodiversity
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article
School of Environmental and Rural Science

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