Climate and functional traits jointly mediate tree water-use strategies

Climate and functional traits jointly mediate tree water-use strategies

© 2021 The Authors New Phytologist © 2021 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 231(2021), 2 vom: 23. Juli, Seite 617-630
1. Verfasser: Flo, Victor (VerfasserIn)
Weitere Verfasser: Martínez-Vilalta, Jordi, Mencuccini, Maurizio, Granda, Victor, Anderegg, William R L, Poyatos, Rafael
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. climate meta-analysis sap flow trait coordination tree height water conductance water-relations traits mehr... water-use strategy Water 059QF0KO0R
Beschreibung
Zusammenfassung:© 2021 The Authors New Phytologist © 2021 New Phytologist Foundation.
Tree water use is central to plant function and ecosystem fluxes. However, it is still unknown how organ-level water-relations traits are coordinated to determine whole-tree water-use strategies in response to drought, and whether this coordination depends on climate. Here we used a global sap flow database (SAPFLUXNET) to study the response of water use, in terms of whole-tree canopy conductance (G), to vapour pressure deficit (VPD) and to soil water content (SWC) for 142 tree species. We investigated the individual and coordinated effect of six water-relations traits (vulnerability to embolism, Huber value, hydraulic conductivity, turgor-loss point, rooting depth and leaf size) on water-use parameters, also accounting for the effect of tree height and climate (mean annual precipitation, MAP). Reference G and its sensitivity to VPD were tightly coordinated with water-relations traits rather than with MAP. Species with efficient xylem transport had higher canopy conductance but also higher sensitivity to VPD. Moreover, we found that angiosperms had higher reference G and higher sensitivity to VPD than did gymnosperms. Our results highlight the need to consider trait integration and reveal the complications and challenges of defining a single, whole-plant resource use spectrum ranging from 'acquisitive' to 'conservative'
Beschreibung:Date Completed 18.06.2021
Date Revised 28.08.2021
published: Print-Electronic
ErratumIn: New Phytol. 2021 Nov;232(3):1519. - PMID 34453859
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.17404