Preprints
https://doi.org/10.5194/bg-2022-96
https://doi.org/10.5194/bg-2022-96
 
25 Apr 2022
25 Apr 2022
Status: this preprint is currently under review for the journal BG.

Technical note: Common ambiguities in plant hydraulics

Yujie Wang1 and Christian Frankenberg1,2 Yujie Wang and Christian Frankenberg
  • 1Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125, USA
  • 2Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA

Abstract. Plant hydraulics gains increasing interest in plant eco-physiology and vegetation modeling. However, the hydraulic properties and profiles are often improperly represented thus leading to biased results and simulations, e.g., the neglection of gravitational pressure drop results in overestimated water flux. We highlight the commonly seen ambiguities and/or misunderstandings in plant hydraulics, including (1) distinction between water potential and pressure, (2) differences among hydraulic conductance and conductivity, (3) xylem vulnerability curve formulations, (4) stomatal model representations, (5) bias from analytic estimations, (6) whole plant vulnerability, and (7) neglected temperature dependencies. We recommend careful thinking before using or modifying existing definitions, methods, and models.

Yujie Wang and Christian Frankenberg

Status: open (until 17 Jun 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on bg-2022-96', Anonymous Referee #1, 15 May 2022 reply

Yujie Wang and Christian Frankenberg

Yujie Wang and Christian Frankenberg

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Short summary
Plant hydraulics is often misrepresented in topical research. We highlight the commonly seen ambiguities and/or mistakes, with equations and figures to help visualize the potential biases. We recommend careful thinking when using or modifying existing plant hydraulic terms, methods, and models.
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