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Components of leaf-trait variation along environmental gradients

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Dong et al. 2020 components of leaf trait. Accepted manuscript.docxAccepted version81.37 kBMicrosoft WordView/Open
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Title: Components of leaf-trait variation along environmental gradients
Authors: Dong, N
Prentice, IC
Wright, IJ
Evans, BJ
Togashi, HF
Caddy-Retalic, S
McInerney, FA
Sparrow, B
Leitch, E
Lowe, AJ
Item Type: Journal Article
Abstract: Leaf area (LA), mass per area (LMA), nitrogen per unit area (Narea) and the leaf-internal to ambient CO2 ratio (χ) are fundamental traits for plant functional ecology and vegetation modelling. Here we aimed to assess how their variation, within and between species, tracks environmental gradients. Measurements were made on 705 species from 116 sites within a broad north–south transect from tropical to temperate Australia. Trait responses to environment were quantified using multiple regression; within- and between-species responses were compared using analysis of covariance and trait-gradient analysis. Leaf area, the leaf economics spectrum (indexed by LMA and Narea) and χ (from stable carbon isotope ratios) varied almost independently among species. Across sites, however, χ and LA increased with mean growing-season temperature (mGDD0) and decreased with vapour pressure deficit (mVPD0) and soil pH. LMA and Narea showed the reverse pattern. Climate responses agreed with expectations based on optimality principles. Within-species variability contributed < 10% to geographical variation in LA but > 90% for χ, with LMA and Narea intermediate. These findings support the hypothesis that acclimation within individuals, adaptation within species and selection among species combine to create predictable relationships between traits and environment. However, the contribution of acclimation/adaptation vs species selection differs among traits.
Issue Date: 24-Apr-2020
Date of Acceptance: 12-Mar-2020
URI: http://hdl.handle.net/10044/1/89772
DOI: 10.1111/nph.16558
ISSN: 0028-646X
Publisher: Wiley
Start Page: 82
End Page: 94
Journal / Book Title: New Phytologist
Volume: 228
Issue: 1
Copyright Statement: © 2020 The Authors. New Phytologist © 2020 New Phytologist Trust. This is the accepted version of the following article: Dong, N., Prentice, I.C., Wright, I.J., Evans, B.J., Togashi, H.F., Caddy-Retalic, S., McInerney, F.A., Sparrow, B., Leitch, E. and Lowe, A.J. (2020), Components of leaf-trait variation along environmental gradients. New Phytol, 228: 82-94, which has been published in final form at https://doi.org/10.1111/nph.16558
Sponsor/Funder: AXA Research Fund
Commission of the European Communities
Funder's Grant Number: AXA Chair Programme in Biosphere and Climate Impacts
787203
Keywords: Science & Technology
Life Sciences & Biomedicine
Plant Sciences
acclimation
adaptation
intraspecific variation
leaf area
leaf economics spectrum
plant functional traits
species selection
trait-gradient analysis
ADAPTIVE VARIATION
SOIL
VEGETATION
NITROGEN
CLIMATE
MODEL
WATER
RESPONSES
PHOTOSYNTHESIS
TRANSPIRATION
acclimation
adaptation
intraspecific variation
leaf area
leaf economics spectrum
plant functional traits
species selection
trait-gradient analysis
Australia
Climate
Phenotype
Plant Leaves
Soil
Plant Leaves
Soil
Climate
Phenotype
Australia
Science & Technology
Life Sciences & Biomedicine
Plant Sciences
acclimation
adaptation
intraspecific variation
leaf area
leaf economics spectrum
plant functional traits
species selection
trait-gradient analysis
ADAPTIVE VARIATION
SOIL
VEGETATION
NITROGEN
CLIMATE
MODEL
WATER
RESPONSES
PHOTOSYNTHESIS
TRANSPIRATION
Plant Biology & Botany
06 Biological Sciences
07 Agricultural and Veterinary Sciences
Publication Status: Published
Online Publication Date: 2020-03-21
Appears in Collections:Grantham Institute for Climate Change
Faculty of Natural Sciences