Abstract
The possibility of using the elemental compositions of species as a tool to identify species/genotype niche remains to be tested at a global scale. We investigated relationships between the foliar elemental compositions (elementomes) of trees at a global scale with phylogeny, climate, N deposition and soil traits. We analysed foliar N, P, K, Ca, Mg and S concentrations in 23,962 trees of 227 species. Shared ancestry explained 60–94% of the total variance in foliar nutrient concentrations and ratios whereas current climate, atmospheric N deposition and soil type together explained 1–7%, consistent with the biogeochemical niche hypothesis which predicts that each species will have a specific need for and use of each bio-element. The remaining variance was explained by the avoidance of nutritional competition with other species and natural variability within species. The biogeochemical niche hypothesis is thus able to quantify species-specific tree niches and their shifts in response to environmental changes.
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Leaf trait variation in species-rich tropical Andean forests
Scientific Reports Open Access 11 May 2021
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Data availability
All data are available at the Global Ecology Unit CREAF-CSIC-UAB (glonuteco.creaf.cat/data/).
Code availability
All code is available at the Global Ecology Unit CREAF-CSIC-UAB (glonuteco.creaf.cat/data/).
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Acknowledgements
The authors thank the European Research Council Synergy (grant no. ERC-SyG-2013-610028 IMBALANCE-P), the Spanish Government (grant no. PID2019-110521GB-I00) and the Catalan Government (grant no. SGR 2017-1005). M.F.-M. is a postdoctoral fellow of the Research Foundation–Flanders.
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J.S. and J.P. conceived, designed and supervised the project. J.S., H.V., I.A.J., J.P. and P.Z. searched the bibliography and gathered data. J.S., H.V., P.Z., M.F.-M., A.R., P.C., M.O., I.A.J. and J.P. checked the data and contributed to data accuracy selection. J.S., H.V., G.F.-A., J.P. and M.F.-M. developed the statistical analyses. J.S., J.P., M.F.-M., H.V. and G.F.-A. created the tables and figures. J.S. wrote the paper. J.P., H.V., G.P., A.G.-G., M.F.-M., G.F.-A., A.R., P.C., M.O. and I.A.J. revised the manuscript. All authors read and revised the final version of the manuscript.
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Extended data
Extended Data Fig. 1 Map of plot situation.
Map of the plot locations.
Extended Data Fig. 2 Phylogenetic diagram of foliar K concentration.
Phylogenetic diagrams of the foliar K concentration (25 112 datapoints) along the phylogeny tree obtained by using function phylosig of the package phytools in R (Revell59) representing the value structure used to estimate phylogenetic signal in the different variables. The function contmap estimates the ancestral characters at internal nodes using maximum likelihood and assuming Brownian motion as a model for trait evolution (Felsenstein63), and then interpolates ancestral condition along the branches of the tree (Revell64).
Extended Data Fig. 3 Phylogenetic diagram of foliar S concentration.
Phylogenetic diagrams of the foliar S concentration (25 112 datapoints) along the phylogeny tree obtained by using function phylosig of the package phytools in R (Revell59) representing the value structure used to estimate phylogenetic signal in the different variables. The function contmap estimates the ancestral characters at internal nodes using maximum likelihood and assuming Brownian motion as a model for trait evolution (Felsenstein63), and then interpolates ancestral condition along the branches of the tree (Revell64).
Extended Data Fig. 4 Phylogenetic diagram of foliar Ca concentration.
Phylogenetic diagrams of the foliar Ca concentration (25 112 datapoints) along the phylogeny tree obtained by using function phylosig of the package phytools in R (Revell59) representing the value structure used to estimate phylogenetic signal in the different variables. The function contmap estimates the ancestral characters at internal nodes using maximum likelihood and assuming Brownian motion as a model for trait evolution (Felsenstein63), and then interpolates ancestral condition along the branches of the tree (Revell64).
Extended Data Fig. 5 Phylogenetic diagram of foliar Mg concentration.
Phylogenetic diagrams of the foliar Mg concentration (25 112 datapoints) along the phylogeny tree obtained by using function phylosig of the package phytools in R (Revell59) representing the value structure used to estimate phylogenetic signal in the different variables. The function contmap estimates the ancestral characters at internal nodes using maximum likelihood and assuming Brownian motion as a model for trait evolution (Felsenstein63), and then interpolates ancestral condition along the branches of the tree (Revell64).
Extended Data Fig. 6 Foliar N, P and K concentrations of the trees growing on different soil types.
Foliar N, P and K concentrations (Mean ± S.E., % dry weight) (25 112 datapoints) of the trees growing on different soil types. Different letters represent significantly (P<0.005) disticnt values among different soil types (Soil Taxonomy soil Orders) analyzed using Bayesian phylogenetic linear mixed models with soil orders as fixed effects using the MCMCglmm package66 in R.
Extended Data Fig. 7 Foliar N/P, N/K and P/K concentrations ratios of the trees growing on different soil types.
Foliar N/P, N/K and P/K concentrations ratio (Mean ± S.E) (25 112 datapoints) of the trees growing on different soil types. Different letters represent significantly (P<0.005) disticnt values among different soil types (Soil Taxonomy soil Orders) analyzed using Bayesian phylogenetic linear mixed models with soil orders as fixed effects using the MCMCglmm package66 in R.
Extended Data Fig. 8 European area of distribution and distribution area overlap.
Representation of the European area of distribution and distribution area overlap with the corresponding sampled sites by the ICP Forest iniciative of Picea abies and Quercus robur (A), Abies alba and Quercus petraea (B) and Pinus sylvestris and Fagus sylvativa (C).
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Sardans, J., Vallicrosa, H., Zuccarini, P. et al. Empirical support for the biogeochemical niche hypothesis in forest trees. Nat Ecol Evol 5, 184–194 (2021). https://doi.org/10.1038/s41559-020-01348-1
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DOI: https://doi.org/10.1038/s41559-020-01348-1
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