Basin-wide variation in tree hydraulic safety margins predicts the carbon balance of Amazon forests - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement
Journal Articles Nature Year : 2023

Basin-wide variation in tree hydraulic safety margins predicts the carbon balance of Amazon forests

Julia Valentim Tavares (1) , Rafael Oliveira (2) , Maurizio Mencuccini (3) , Caroline Signori-Müller (1, 4, 2) , Luciano Pereira (2, 5) , Francisco Carvalho Diniz (1) , Martin Gilpin (1) , Manuel Marca Zevallos , Carlos Salas Yupayccana (6) , Martin Acosta (7) , Flor Pérez Mullisaca , Fernanda de V. Barros , Paulo Bittencourt , Halina Jancoski , Marina Corrêa Scalon , Beatriz Marimon , Imma Oliveras Menor (8) , Ben Hur Marimon , Max Fancourt , Alexander Chambers-Ostler , Adriane Esquivel-Muelbert , Lucy Rowland , Patrick Meir , Antonio Carlos Lola da Costa , Alex Nina , Jesus Sanchez , Jose Tintaya , Rudi Chino , Jean Baca , Leticia Fernandes , Edwin Cumapa , João Antônio R. Santos , Renata Teixeira , Ligia Tello , Maira Ugarteche , Gina Cuellar , Franklin Martinez , Alejandro Araujo-Murakami , Everton Almeida , Wesley Jonatar Alves da Cruz , Jhon del Aguila Pasquel , Luís Aragāo , Timothy Baker , Plinio Barbosa de Camargo , Roel Brienen , Wendeson Castro , Sabina Cerruto Ribeiro , Fernanda Coelho de Souza , Eric Cosio , Nallaret Davila Cardozo , Richarlly da Costa Silva , Mathias Disney , Javier Silva Espejo , Ted Feldpausch , Leandro Ferreira , Leandro Giacomin , Niro Higuchi , Marina Hirota , Euridice Honorio , Walter Huaraca Huasco , Simon Lewis , Gerardo Flores Llampazo , Yadvinder Malhi , Abel Monteagudo Mendoza , Paulo Morandi , Victor Chama Moscoso , Robert Muscarella , Deliane Penha , Mayda Cecília Rocha , Gleicy Rodrigues , Ademir Ruschel , Norma Salinas , Monique Schlickmann , Marcos Silveira , Joey Talbot , Rodolfo Vásquez , Laura Vedovato , Simone Aparecida Vieira , Oliver Phillips , Emanuel Gloor , David Galbraith
Julia Valentim Tavares
University of Leeds
Rafael Oliveira
Universidade Estadual de Campinas = University of Campinas
Maurizio Mencuccini
  • Function : Author
CREAF - Centre for Ecological Research and Applied Forestries
Caroline Signori-Müller
University of Leeds
University of Exeter
Universidade Estadual de Campinas = University of Campinas
Luciano Pereira
Universidade Estadual de Campinas = University of Campinas
Universität Ulm - Ulm University [Ulm, Allemagne]
Francisco Carvalho Diniz
  • Function : Author
University of Leeds
Martin Gilpin
  • Function : Author
University of Leeds
Manuel Marca Zevallos
Carlos Salas Yupayccana
  • Function : Author
Universidad Nacional de San Antonio Abad del Cusco
Martin Acosta
Universidade Federal do Acre
Flor Pérez Mullisaca
  • Function : Author
Fernanda de V. Barros
  • Function : Author
Paulo Bittencourt
  • Function : Author
Halina Jancoski
  • Function : Author
Marina Corrêa Scalon
Beatriz Marimon
  • Function : Author
Imma Oliveras Menor
Botanique et Modélisation de l'Architecture des Plantes et des Végétations
Ben Hur Marimon
Max Fancourt
Alexander Chambers-Ostler
  • Function : Author
Adriane Esquivel-Muelbert
Lucy Rowland
Patrick Meir
  • Function : Author
Antonio Carlos Lola da Costa
  • Function : Author
Alex Nina
  • Function : Author
Jesus Sanchez
  • Function : Author
Jose Tintaya
  • Function : Author
Rudi Chino
Jean Baca
  • Function : Author
Leticia Fernandes
Edwin Cumapa
  • Function : Author
João Antônio R. Santos
  • Function : Author
Renata Teixeira
  • Function : Author
Ligia Tello
  • Function : Author
Maira Ugarteche
  • Function : Author
Gina Cuellar
  • Function : Author
Franklin Martinez
  • Function : Author
Alejandro Araujo-Murakami
  • Function : Author
Everton Almeida
  • Function : Author
Wesley Jonatar Alves da Cruz
Jhon del Aguila Pasquel
  • Function : Author
Luís Aragāo
  • Function : Author
Timothy Baker
Plinio Barbosa de Camargo
  • Function : Author
Roel Brienen
Wendeson Castro
Sabina Cerruto Ribeiro
  • Function : Author
Fernanda Coelho de Souza
Eric Cosio
  • Function : Author
Nallaret Davila Cardozo
  • Function : Author
Richarlly da Costa Silva
Mathias Disney
Javier Silva Espejo
  • Function : Author
Ted Feldpausch
Leandro Ferreira
  • Function : Author
Leandro Giacomin
Niro Higuchi
  • Function : Author
Marina Hirota
Euridice Honorio
Walter Huaraca Huasco
  • Function : Author
Simon Lewis
Gerardo Flores Llampazo
  • Function : Author
Yadvinder Malhi
Abel Monteagudo Mendoza
  • Function : Author
Paulo Morandi
  • Function : Author
Victor Chama Moscoso
  • Function : Author
Robert Muscarella
  • Function : Author
Deliane Penha
  • Function : Author
Mayda Cecília Rocha
Gleicy Rodrigues
  • Function : Author
Ademir Ruschel
  • Function : Author
Norma Salinas
  • Function : Author
Monique Schlickmann
  • Function : Author
Marcos Silveira
Joey Talbot
  • Function : Author
Rodolfo Vásquez
  • Function : Author
Laura Vedovato
  • Function : Author
Simone Aparecida Vieira
Oliver Phillips
Emanuel Gloor
  • Function : Author
David Galbraith

Abstract

Tropical forests face increasing climate risk1,2, yet our ability to predict their response to climate change is limited by poor understanding of their resistance to water stress. Although xylem embolism resistance thresholds (for example, Ψ50) and hydraulic safety margins (for example, HSM50) are important predictors of drought-induced mortality risk3,4,5, little is known about how these vary across Earth’s largest tropical forest. Here, we present a pan-Amazon, fully standardized hydraulic traits dataset and use it to assess regional variation in drought sensitivity and hydraulic trait ability to predict species distributions and long-term forest biomass accumulation. Parameters Ψ50 and HSM50 vary markedly across the Amazon and are related to average long-term rainfall characteristics. Both Ψ50 and HSM50 influence the biogeographical distribution of Amazon tree species. However, HSM50 was the only significant predictor of observed decadal-scale changes in forest biomass. Old-growth forests with wide HSM50 are gaining more biomass than are low HSM50 forests. We propose that this may be associated with a growth–mortality trade-off whereby trees in forests consisting of fast-growing species take greater hydraulic risks and face greater mortality risk. Moreover, in regions of more pronounced climatic change, we find evidence that forests are losing biomass, suggesting that species in these regions may be operating beyond their hydraulic limits. Continued climate change is likely to further reduce HSM50 in the Amazon6,7, with strong implications for the Amazon carbon sink.

Domains

Biodiversity and Ecology
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https://hal.inrae.fr/hal-04107976

Submitted on : Wednesday, November 15, 2023-9:44:43 AM

Last modification on : Thursday, May 2, 2024-12:42:17 PM

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hal-04107976 , version 1 (15-11-2023)

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Julia Valentim Tavares, Rafael Oliveira, Maurizio Mencuccini, Caroline Signori-Müller, Luciano Pereira, et al.. Basin-wide variation in tree hydraulic safety margins predicts the carbon balance of Amazon forests. Nature, 2023, 617 (7959), pp.111-117. ⟨10.1038/s41586-023-05971-3⟩. ⟨hal-04107976⟩

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