Frederick C. Draper
Flavia R.C. Costa
Gabriel Arellano
Oliver L. Phillips
Alvaro Duque
Manuel J. Macía
Steege H ter
Gregory P. Asner
Erika Berenguer
Juliana Schietti
Jacob B. Socolar
Souza FC de
Kyle G. Dexter
Peter M. Jørgensen
J. Sebastian Tello
William E. Magnusson
Timothy R. Baker
Carolina V. Castilho
Abel Monteagudo-Mendoza
Paul V.A. Fine
Kalle Ruokolainen
Euridice N.Honorio Coronado
Gerardo Aymard
Nállarett Dávila
Mauricio Sánchez Sáenz
Marcos A.Rios Paredes
Julien Engel
Claire Fortunel
C. E.Timothy Paine
Jean Yves Goret
Aurelie Dourdain
Pascal Petronelli
Elodie Allie
Juan E.Guevara Andino
Roel J.W. Brienen
Leslie Cayola Pérez
Ângelo G. Manzatto
Narel Y.Paniagua Zambrana
Jean François Molino
Daniel Sabatier
Jerôme Chave
Sophie Fauset, School of Geography, Earth and Environmental Sciences
Roosevelt Garcia Villacorta
Maxime Réjou-Méchain
Paul E. Berry
Karina Melgaço
Ted R. Feldpausch
Elvis Valderamma Sandoval
Rodolfo Vasquez Martinez
Italo Mesones
André B. Junqueira
Katherine H. Roucoux
Toledo JJ de
Ana C. Andrade
José Luís Camargo
Aguila Pasquel J del
Flávia D. Santana
WF Laurance
SG Laurance
Thomas E. Lovejoy
James A. Comiskey
David R. Galbraith
Michelle Kalamandeen
Gilberto E.Navarro Aguilar
Jim Vega Arenas
Carlos A.Amasifuen Guerra
Manuel Flores
Gerardo Flores Llampazo
Luis A.Torres Montenegro
Ricardo Zarate Gomez
Marcelo P. Pansonato
Victor Chama Moscoso
Jason Vleminckx
Oscar J.Valverde Barrantes
Joost F. Duivenvoorden
Sousa SA de
Luzmila Arroyo
Ricardo O. Perdiz
Jessica Soares Cravo
Beatriz S. Marimon
N/A Junio



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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Nature Ecology & Evolution





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School of Geography, Earth and Environmental Sciences