Using the Pneumatic method to estimate embolism resistance in species with long vessels: a commentary on the article “a comparison of five methods to assess embolism resistance in trees”

Pereira, Luciano, Bittencourt, Paulo R.L. ORCID: https://orcid.org/0000-0002-1618-9077, Rowland, Lucy, Brum, Mauro, Miranda, Marcela T., Pacheco, Vinicius S., Oliveira, Rafael S., Machado, Eduardo C., Jansen, Steven and Ribeiro, Rafael V. 2021. Using the Pneumatic method to estimate embolism resistance in species with long vessels: a commentary on the article “a comparison of five methods to assess embolism resistance in trees”. Forest Ecology and Management 479 , 118547. 10.1016/j.foreco.2020.118547

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Abstract

Comparisons among methods are essential to validate plant traits measured across studies. However, a rigorous analysis is a complex task that needs to take into account not only the principle of the method and its correct use, but also inherent intraspecific trait variability, something we feel is not fully considered by Sergent et al. (2020). They compared the Bench dehydration, MicroCT, and Pneumatic methods using three long-vesseled species and found divergence among these methods. As a key finding, Sergent and colleagues reported unreliable estimates of Ψ50 for Olea europaea when using the Pneumatic method in a such long-vesseled species. Here, we tested this finding by measuring independently vulnerability curves for O. europaea. Our results reinforce the viability of the Pneumatic method to estimate embolism vulnerability in long-vesseled species, as already found by others. Briefly, we also discuss important procedures when using the Pneumatic method and encourage further experiments, as the only way to know better the limitations of available methods and improve our understanding about plant water relations.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences
Publisher:	Elsevier
ISSN:	0378-1127
Date of Acceptance:	29 August 2020
Last Modified:	15 Oct 2024 11:14
URI:	https://orca.cardiff.ac.uk/id/eprint/172722

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