Yang, J., et al., On the modeling of tropical tree growth: the importance of intra-specific trait variation, non-linear functions and phenotypic integration.
学员文章系列之十三
Yang, J., X. Song, M. Cao, X. Deng, W. Zhang, X. Yang, and N. G. Swenson. 2020. On the modeling of tropical tree growth: the importance of intra-specific trait variation, non-linear functions and phenotypic integration.
Annals of Botany.
https://doi.org/10.1093/aob/mcaa085
Abstract
Background and aims: The composition and dynamics of plant communities arises from individual-level demographic outcomes, which are driven by interactions between phenotypes and the environment. Functional traits that can be measured across plants are frequently used to model plant growth and survival. Perhaps surprisingly, species average trait values are often used in these studies and, in some cases, these trait values come from other regions or averages calculated from global databases. This data aggregation potentially results in a large loss of valuable information that likely results in models of plant performance that are weak or even misleading.
Methods: We present individual-level trait and fine scale growth data from >500 co-occurring individual trees from 20 species in a Chinese tropical rain forest. We construct Bayesian models of growth informed by theory and to construct hierarchical Bayesian models that utilize both individual- and species-level trait data and to compare these models to models only using individual-level data.
Key results: We show that trait-growth relationships measured at the individual-level vary across species, are often weak using commonly measured traits and do not align with the results of analyses conducted at the species-level. However, when we construct individual-level models of growth using leaf area ratio approximations and integrated phenotypes, we generated strong predictive models of tree growth.
