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Articles by Patrick Meir
Global dataset of plant water transport capacity
Abstract Whole-plant hydraulic conductance (kplant) quantifies the water transport capacity along the soil-plant-atmosphere continuum, and is a key trait determining plant water use and drought response strategies, as well as an essential parameter in ecosystem models. However, globally harmonised data are lacking.
Amazon rainforests are rejuvenating their canopies by producing more photosynthetically efficient young leaves under climate change - Nature Plants
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Abstract Leaf age structure strongly regulates canopy photosynthesis in Amazon rainforests yet its large-scale patterns and dynamics remain poorly understood. Here we map the fraction of leaf area of photosynthetically efficient young leaves (fyoung) using remote sensing data and assess its spatiotemporal variability from 2001 to 2023.
By Xueqin Yang, Jie Tian, Philippe Ciais, liming Zhou, Peter B. Reich, Jin Wu Verified, Jiali Shang, Jerome Chave, Julien Lamour, Isabelle Maréchaux, Yongshuo Fu, JING CHEN, Jane Liu, Shengli Tao, Xiangming Xiao, Xiangtao Xu, Yongxian Su, Haicheng Zhang, Zaichun Zhu, Yao Zhang, Dalei Hao, Lei Chen, Qiang Liu, Raffaele Lafortezza, Kai Yan, Peng Li, Xing Li, Patrick Meir, Hui Liu, Damien Bonal, Bruce Nelson, Hao Tang, Jingrui Wang, Kailiang Yu, Wenping Yuan, Shuo Wang, Xiuzhi Chen
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Nature
Verified
Family imprint reveals basin-wide patterns of Amazon forest embolism resistance - Nature Communications
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Abstract Amazon rainforests face intensifying water stress due to increases in vapour pressure deficit and changing hydrological regimes. Embolism resistance (Ψ50) is a critical metric of tree survival under drought conditions, it is defined as a plant’s capacity to resist disruption of xylem water flow due to air bubble formation from water stress. However, measurements of Ψ50 are only available for a limited number of Amazon locations and species.
By Julia Valentim Tavares, Emanuel Gloor, Thiago silva, Rafael Oliveira, Fernanda de Souza, Caroline Signori-Müller, Luciano Rodrigues Pereira, Martin Acosta, Marina Corrêa Scalon, Beatriz Schwantes Marimon, Yadvinder Malhi, Imma Oliveras Menor, Patrick Meir, Paulo L. Bittencourt, Joao Santos Verified, Renata de Oliveira, Adriane Esquivel-Muelbert, Esteban Alvarez-Davila, Miguel Alexiades, Ana Luís Andrade, Luiz Aragão, Alejandro Araujo-Murakami, Gerardo A. Aymard, Damien Bonal, Roel Brienen, Carlos Cerón Verified, José Luis Camargo, Richarlly C. Silva, Wendeson Castro, Jerome Chave, James A. Comiskey, Douglas C. Daly, Géraldine Derroire, Sophie Fauset, Ted R. Feldpausch, Gerardo Flores Llampazo, Bruno Hérault, Lionel Hernandez, Niro Higuchi, Eliana Jimenez-Rojas, Michelle Kalamandeen, Susan Laurance, William Laurance, Simon Lewis Verified, Antonio Lima, Paulo S. Morandi, David W. Neill, Walter Palacios, Alexander Gutierrez, Guido Pardo-Molina, María Cristina Peñuela-Mora, Nigel Pitman, Rocío Rojas, Adriana Prieto, Maxime Réjou-Méchain, Sabina Cerruto Ribeiro, Kalle Ruokolainen, Rafael P. Salomão, Julio Serrano, Rodrigo O. Sierra, Marcos Silveira, Hans ter Steege, John Terborgh, Luis Gamarra, Rodolfo Martinez, Ima Vieira, Emilio Vilanova Torre, Vincent A. Vos, Ophelia Wang, Kenneth R. Young, Robert Muscarella, Kyle G. Dexter, Timothy R. Baker, Maurizio Mencuccini, David Galbraith, Francisco Carvalho Diniz, Martin Gilpin, Manuel J. Marca Zevallos, Carlos A. Salas Yupayccana, Flor M. Perez-Mullisaca, Halina Jancoski, Edmar Almeida de Oliveira, Luzmila Arroyo, Jorcely G. Barroso, Aurelie Dourdain, Eurídice N. Honorio Coronado, Abel Monteagudo-Mendoza, Percy NúñezVargas, Hirma Ramírez-Angulo, Ademir R. Ruschel
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Nature
Verified
A crucial store of carbon in Australia’s tropical forests has switched from carbon sink to carbon source
One approach to help fight climate change is to protect natural forests, as they absorb some atmospheric carbon released by burning fossil fuels and store large volumes of carbon. Our new research on Australia’s tropical rainforests challenges the assumption that they will keep absorbing more carbon than they release.
A crucial store of carbon in Australia’s tropical forests has switched from carbon sink to carbon source
Global carbon levels rose by record amount in 2024, U.N. agency says Carbon dioxide emissions from human activities and wildfires rose last year, while the land and oceans’ ability to absorb carbon diminished, leading to a record surge in the amount of the planet-warming gas in the atmosphere. The global average concentration of CO2 blanketing the Earth surged by 3.5 …
Global Change Biology | Environmental Change Journal | Wiley Online Library
Conflicts of Interest The authors declare no conflicts of interest. Supporting Information Filename Description gcb17567-sup-0001-Supinfo.pdfPDF document, 2.6 MB Data S1. References 2020. “Accurate, Simple Equation for Saturated Vapour Pressure Over Water and Ice.” Quarterly Journal of the Royal Meteorological Society 146, no. 733: 4252–4258. https://doi.org/10.1002/qj.3899. , , and . 2019.
Burn Severity and Post‐Fire Weather Are Key to Predicting Time‐To‐Recover From Australian Forest Fires
1 Introduction The remarkable magnitude and scale of the Australian 2019–2020 Black Summer megafires have been well documented (Boer et al., 2020; Nolan et al., 2020) and have highlighted the importance of wildfire prediction and forest management. Even prior to the megafires, the Southeast Australian fire regime was marked by comparatively large and intense wildfires (Archibald et al., 2013).
Variable thermal plasticity of leaf functional traits in Andean tropical montane forests
CONFLICT OF INTEREST STATEMENT The authors declare no conflict of interest. Supporting Information REFERENCES , , , , & (2019) Elevation-dependent warming of land surface temperatures in the Andes assessed using MODIS LST time series (2000–2017). International Journal of Applied Earth Observation and Geoinformation, 77, 119–128. , , , , , et al. (2019). Technical Summary: Global warming of 1.5 C.
Author Correction: Soil carbon loss by experimental warming in a tropical forest
Correction to: Nature https://doi.org/10.1038/s41586-020-2566-4Published online 12 August 2020 In the main text of this Article, ‘whole-soil-profile’ should be added to the sentence “Here we present results from the first whole-soil-profile warming experiment in a tropical forest (SWELTR: Soil Warming Experiment in Lowland Tropical Rainforest)”.
Soil carbon loss by experimental warming in a tropical forest
Abstract Tropical soils contain one-third of the carbon stored in soils globally1, so destabilization of soil organic matter caused by the warming predicted for tropical regions this century2 could accelerate climate change by releasing additional carbon dioxide (CO2) to the atmosphere3,4,5,6. Theory predicts that warming should cause only modest carbon loss from tropical soils relative to those at higher latitudes5,7, but there have been no warming experiments in tropical forests to test this8.
Tallest trees could die of thirst in rainforest droughts, study finds
Droughts could kill off the tallest trees in tropical rainforests in coming decades, a study suggests. For the first time, scientists have identified the ecological trigger that brings about the death of tropical rainforest trees during prolonged water shortages. Reduced rainfall forecast in coming decades could cause the breakdown of the transport system in trees that takes water up from soil to the leaves, scientists say.
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