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Quantifying leaf trait covariation and its controls across climates and biomes

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Title: Quantifying leaf trait covariation and its controls across climates and biomes
Authors: Yang, Y
Wang, H
Harrison, S
Prentice, IC
Wright, I
Peng, C
Lin, G
Item Type: Journal Article
Abstract: Plant functional ecology requires the quantification of trait variation and its controls. Field measurements on 483 species at 48 sites across China were used to analyse variation in leaf traits, and assess their predictability. Principal components analysis (PCA) was used to characterize trait variation, redundancy analysis (RDA) to reveal climate effects, and RDA with variance partitioning to estimate separate and overlapping effects of site, climate, life‐form and family membership. Four orthogonal dimensions of total trait variation were identified: leaf area (LA), internal‐to‐ambient CO2 ratio (χ), leaf economics spectrum traits (specific leaf area (SLA) versus leaf dry matter content (LDMC) and nitrogen per area (Narea)), and photosynthetic capacities (Vcmax, Jmax at 25°C). LA and χ covaried with moisture index. Site, climate, life form and family together explained 70% of trait variance. Families accounted for 17%, and climate and families together 29%. LDMC and SLA showed the largest family effects. Independent life‐form effects were small. Climate influences trait variation in part by selection for different life forms and families. Trait values derived from climate data via RDA showed substantial predictive power for trait values in the available global data sets. Systematic trait data collection across all climates and biomes is still necessary.
Issue Date: 1-Jan-2019
Date of Acceptance: 10-Sep-2018
URI: http://hdl.handle.net/10044/1/64643
DOI: https://dx.doi.org/10.1111/nph.15422
ISSN: 0028-646X
Publisher: Wiley
Start Page: 155
End Page: 168
Journal / Book Title: New Phytologist
Volume: 221
Issue: 1
Copyright Statement: © 2018 The Authors. New Phytologist © 2018 New Phytologist Trust. This is the accepted version of the following article, which has been published in final form at https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.15422
Sponsor/Funder: AXA Research Fund
Funder's Grant Number: AXA Chair Programme in Biosphere and Climate Impacts
Keywords: Science & Technology
Life Sciences & Biomedicine
Plant Sciences
climate
leaf economics spectrum
multivariate analysis
photosynthetic capacity
phylogeny
plant functional traits
vegetation modelling
CARBON-ISOTOPE DISCRIMINATION
PLANT FUNCTIONAL TRAITS
PHOTOSYNTHETIC CAPACITY
LEADING DIMENSIONS
ADAPTIVE VARIATION
BIOCHEMICAL-MODEL
RESPONSES
COMMUNITIES
VEGETATION
NITROGEN
06 Biological Sciences
07 Agricultural And Veterinary Sciences
Plant Biology & Botany
Publication Status: Published
Online Publication Date: 2018-09-11
Appears in Collections:Department of Life Sciences
Faculty of Natural Sciences