Tree size regulates sugar maple water response to atmospheric evaporative demand and soil water availability

Nia Perron

doi:10.1016/j.agrformet.2026.111384

Tree size regulates sugar maple water response to atmospheric evaporative demand and soil water availability

2026-07-31

0

OA

AI

N

Nia Perron *

P

Pierrick Arnault

T

Tristan Monette

G

Gabriel Bastien-Beaudet

L

Louis Duchesne

A

Audrey Maheu

DOI：10.1016/j.agrformet.2026.111384

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Abstract

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• Tree size shaped sugar maple water use response to atmospheric demand. • Large trees had higher sap flux and deficit with rising atmospheric demand. • Stem water in large trees declined steeply with increasing atmospheric demand. • Large trees gained more stem water as soils wetted, buffering stem deficit. • Size effects were consistent, but individual trees showed diverse responses.

Keywords:

Atmospheric evaporative demand

Sap flux density

Stem water content

Sugar maple (Acer saccharum)

Tree water deficit

Tree size

Hydraulic sensitivity

Tree size regulates sugar maple water response to atmospheric evaporative demand and soil water availability

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