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Amazon tree dominance across forest strata

Frederick Draper Flavia Costa Gabriel Arellano Oliver Phillips Alvaro Duque Manuel Macía Hans ter Steege Gregory Asner Erika Berenguer Juliana Schietti Jacob Socolar Fernanda Coelho de Souza Kyle Dexter Peter Jørgensen J. Sebastian Tello William Magnusson Timothy Baker Carolina Castilho Abel Monteagudo-Mendoza Paul Fine Kalle Ruokolainen Euridice Coronado Gerardo Aymard Nállarett Dávila Mauricio Sánchez Sáenz Marcos Paredes Julien Engel 1 Claire Fortunel 1 C. Paine Jean-Yves Goret Aurelie Dourdain Pascal Petronelli Elodie Allie Juan Andino Roel Brienen Leslie Cayola Pérez Ângelo Manzatto Narel Zambrana Jean-François Molino 1 Daniel Sabatier 1 Jerôme Chave Sophie Fauset Roosevelt Garcia Villacorta M. Réjou-Méchain 1 Paul Berry Karina Melgaço Ted Feldpausch Elvis Valderamma Sandoval Rodolfo Vasquez Martinez Italo Mesones André Junqueira Katherine Roucoux José de Toledo Ana Andrade José Luís Camargo Jhon del Aguila Pasquel Flávia Santana William Laurance Susan Laurance Thomas Lovejoy James Comiskey David Galbraith Michelle Kalamandeen Gilberto Aguilar Jim Vega Arenas Carlos Guerra Manuel Flores Gerardo Flores Llampazo Luis Montenegro Ricardo Zarate Gomez Marcelo Pansonato Victor Chama Moscoso Jason Vleminckx Oscar Barrantes Joost Duivenvoorden Sidney Araújo de Sousa Luzmila Arroyo Ricardo Perdiz Jessica Soares Cravo Beatriz Marimon Ben Hur Marimon Junior Fernanda Antunes Carvalho Gabriel Damasco Mathias Disney Marcos Salgado Vital Pablo Diaz Alberto Vicentini Henrique Nascimento Niro Higuchi Tinde van Andel Yadvinder Malhi Sabina Cerruto Ribeiro John Terborgh Raquel Thomas Francisco Dallmeier Adriana Prieto Renato Hilário Rafael Salomão Richarlly da Costa Silva Luisa Casas Ima Vieira Alejandro Araujo-Murakami Fredy Ramirez Arevalo Hirma Ramírez-Angulo Emilio Vilanova Torre Maria Peñuela Timothy Killeen Guido Pardo Eliana Jimenez-Rojas Wenderson Castro Darcy Galiano Cabrera John Pipoly Thaiane Rodrigues de Sousa Marcos Silvera Vincent Vos David Neill Percy Núñez Vargas Dilys Vela Luiz Aragão Ricardo Keichi Umetsu Rodrigo Sierra Ophelia Wang Kenneth Young Nayane Prestes Klécia Massi José Reyna Huaymacari Germaine Gutierrez Ana Aldana Miguel Alexiades Fabrício Baccaro Carlos Céron Adriane Esquivel Muelbert Julio Rios Antonio Lima Jonathan Lloyd Nigel Pitman Luis Valenzuela Gamarra Cesar Oroche Alfredo Fuentes Walter Palacios Sandra Patiño Armando Torres-Lezama Christopher Baraloto
Abstract : The forests of Amazonia are among the most biodiverse plant communities on Earth. Given the immediate threats posed by climate and land-use change, an improved understanding of how this extraordinary biodiversity is spatially organized is urgently required to develop effective conservation strategies. Most Amazonian tree species are extremely rare but a few are common across the region. Indeed, just 227 ‘hyperdominant’ species account for >50% of all individuals >10 cm diameter at 1.3 m in height. Yet, the degree to which the phenomenon of hyperdominance is sensitive to tree size, the extent to which the composition of dominant species changes with size class and how evolutionary history constrains tree hyperdominance, all remain unknown. Here, we use a large floristic dataset to show that, while hyperdominance is a universal phenomenon across forest strata, different species dominate the forest understory, midstory and canopy. We further find that, although species belonging to a range of phylogenetically dispersed lineages have become hyperdominant in small size classes, hyperdominants in large size classes are restricted to a few lineages. Our results demonstrate that it is essential to consider all forest strata to understand regional patterns of dominance and composition in Amazonia. More generally, through the lens of 654 hyperdominant species, we outline a tractable pathway for understanding the functioning of half of Amazonian forests across vertical strata and geographical locations.
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https://hal.inrae.fr/hal-03272283
Contributor : Yannick Brohard <>
Submitted on : Monday, June 28, 2021 - 11:32:58 AM
Last modification on : Tuesday, July 6, 2021 - 11:43:08 AM

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Frederick Draper, Flavia Costa, Gabriel Arellano, Oliver Phillips, Alvaro Duque, et al.. Amazon tree dominance across forest strata. Nature Ecology & Evolution, Nature, 2021, 5 (6), pp.757-767. ⟨10.1038/s41559-021-01418-y⟩. ⟨hal-03272283⟩

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