Hydraulic traits are coordinated with maximum plant height at the global scale

Science Advances
Hui LiuQing Ye

Abstract

Water must be transported long distances in tall plants, resulting in increasing hydraulic resistance, which may place limitations on the maximum plant height (Hmax) in a given habitat. However, the coordination of hydraulic traits with Hmax and habitat aridity remains poorly understood. To explore whether Hmax modifies the trade-off between hydraulic efficiency and safety or how water availability might influence the relationship between Hmax and other hydraulic traits, we compiled a dataset including Hmax and 11 hydraulic traits for 1281 woody species from 369 sites worldwide. We found that taller species from wet habitats exhibited greater xylem efficiency and lower hydraulic safety, wider conduits, lower conduit density, and lower sapwood density, which were all associated with habitat water availability. Plant height and hydraulic functioning appear to represent a single, coordinated axis of variation, aligned primarily with water availability, thus suggesting an important role for this axis in species sorting processes.

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Citations

Apr 30, 2019·The New Phytologist·Mark E Olson, Jarmila Pittermann
Jun 20, 2019·The New Phytologist·Maurizio MencucciniJordi Martínez-Vilalta
Dec 17, 2019·The New Phytologist·Manon E B SabotGab Abramowitz
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Nov 11, 2020·Nature Communications·Adriane Esquivel-MuelbertDavid Galbraith
Jan 16, 2021·The New Phytologist·Norbert KunertKristina J Anderson-Teixeira
Mar 3, 2021·Proceedings of the National Academy of Sciences of the United States of America·Robert P SkeltonDavid D Ackerly
Apr 25, 2021·The New Phytologist·Victor FloRafael Poyatos
May 28, 2021·Proceedings of the National Academy of Sciences of the United States of America·Loren KoçillariAmos Maritan
Aug 15, 2021·Proceedings of the National Academy of Sciences of the United States of America·R B PrattM F Tobin
Aug 18, 2021·Proceedings of the National Academy of Sciences of the United States of America·Tong QiuJames S Clark
Aug 18, 2021·The Plant Journal : for Cell and Molecular Biology·Miguel Barceló-AnguianoJuan M Losada
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Oct 10, 2021·Journal of Experimental Botany·Yanjun SongFrank Sterck
Jan 11, 2022·Global Change Biology·Joannès GuillemotPedro H S Brancalion

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Methods Mentioned

BETA
environmental stress
SMA
PCA

Software Mentioned

SMA
lme4
raster
lavaan
lmerTest
smatr
R

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