Tree mode of death and mortality risk factors across Amazon forests

Esquivel-Muelbert Adriane, Phillips Oliver L., Brienen Roel Jacobus Wilhelmus, Fauset Sophie, Sullivan Martin J. P., Baker Timothy R., Chao Kuo-Jung, Feldpausch Ted R., Gloor Emanuel, Higuchi Niro, Houwing-Duistermaat Jeanne, Lloyd Jon, Liu Haiyan, Malhi Yadvinder, Marimon Beatriz Schwantes, Marimon Junior Ben Hur, Monteagudo-Mendoza Abel, Poorter Lourens, Silveira Marcos, Vilanova Torre Emilio, Álvarez-Dávila Esteban, del Aguila Pasquel Jhon, Almeida Everton José, Alvarez Loayza Patricia, Andrade Ana, Aragao Luiz E.O.C., Araujo-Murakami Alejandro, Arets Eric, Arroyo Luzmila, Aymard C. Gerardo A., Baisie Michel, Baraloto Christopher, Barbosa Camargo Plínio, Barroso Jorcely, Blanc Lilian, Bonal Damien, Bongers Frans, Boot René, Brown Foster, Burban Benoit, Camargo Jose Luis C., Castro Wendeson, Chama Moscoso Victor, Chave Jérôme, Comiskey James A., Cornejo Valverde Fernando, Lola da Costa Antonio Carlos, Davila Cardozo Nallaret, Di Fiore Anthony, Dourdain Aurélie, et al.. 2020. Tree mode of death and mortality risk factors across Amazon forests. Nature Communications, 11 (1):5515, 11 p.

https://doi.org/10.1038/s41467-020-18996-3

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Url - jeu de données - Entrepôt autre : https://github.com/AEMuelbert/AmazonTreeMortality / Url - jeu de données - Entrepôt autre : https://doi.org/10.5281/zenodo.3979106 / Url - jeu de données - Entrepôt autre : https://doi.org/10.5521/forestplots.net/2020_6

Quartile : Outlier, Sujet : MULTIDISCIPLINARY SCIENCES

Résumé : The carbon sink capacity of tropical forests is substantially affected by tree mortality. However, the main drivers of tropical tree death remain largely unknown. Here we present a pan-Amazonian assessment of how and why trees die, analysing over 120,000 trees representing > 3800 species from 189 long-term RAINFOR forest plots. While tree mortality rates vary greatly Amazon-wide, on average trees are as likely to die standing as they are broken or uprooted—modes of death with different ecological consequences. Species-level growth rate is the single most important predictor of tree death in Amazonia, with faster-growing species being at higher risk. Within species, however, the slowest-growing trees are at greatest risk while the effect of tree size varies across the basin. In the driest Amazonian region species-level bioclimatic distributional patterns also predict the risk of death, suggesting that these forests are experiencing climatic conditions beyond their adaptative limits. These results provide not only a holistic pan-Amazonian picture of tree death but large-scale evidence for the overarching importance of the growth–survival trade-off in driving tropical tree mortality.

Mots-clés Agrovoc : dégradation des forêts, santé des forêts, mortalité, écologie forestière, forêt tropicale, facteur de risque

Mots-clés géographiques Agrovoc : Amazonie

Mots-clés libres : Forest ecology, Tropical ecology

Classification Agris : K70 - Dégâts causés aux forêts et leur protection
K01 - Foresterie - Considérations générales

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

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