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Updated: Jun 6, 2026
06:56
Tree Core Analysis with X-ray Computed Tomography
Published on: September 22, 2023
The relationship between wood density and mortality in a global tropical forest data set
Nathan J B Kraft1, Margaret R Metz, Richard S Condit
1Department of Integrative Biology, University of California, Berkeley, CA 94720, USA. nkraft@biodiversity.ubc.ca
The New Phytologist
|November 10, 2010
Summary
Wood density, a key plant trait, predicts tree survival in tropical forests. Higher wood density generally correlates with lower mortality rates, though this relationship varies across species and locations.
Area of Science:
- Ecology
- Forest Science
- Plant Physiology
Background:
- Wood density is a crucial plant functional trait linked to life history strategies, influencing whole-plant form and function.
- Understanding the relationship between wood density and mortality is vital for tropical forest ecology and conservation.
Purpose of the Study:
- To investigate the relationship between wood density and tree mortality rates across diverse tropical forest sites.
- To determine the extent to which wood density explains variation in mortality and assess its phylogenetic and spatial influences.
Main Methods:
- A hierarchical Bayesian approach was employed using data from 765,500 trees across 1639 species at 10 tropical sites.
- Analyses included examining mortality trends with increasing wood density and assessing phylogenetic conservatism of traits.
Main Results:
- Mortality rates declined with increasing wood density at most sites (9 out of 10), with the model explaining 40% of mortality variation.
- A strong negative relationship between wood density and mortality was observed in 10 out of 27 analyzed families.
- The wood density-mortality relationship exhibited significant spatial, taxonomic, and temporal variation.
Conclusions:
- Wood density is a significant predictor of tree survival in tropical forests, highlighting its importance as a functional trait.
- The variability in the wood density-mortality relationship underscores the complex interplay of factors influencing tree survival across different ecological contexts.
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