Hyperdominance in the Amazonian Tree Flora

  title={Hyperdominance in the Amazonian Tree Flora},
  author={Hans ter Steege and Nigel C. A. Pitman and Daniel Sabatier and Christopher Baraloto and Rafael P. Salom{\~a}o and Juan Guevara and Oliver L. Phillips and Carolina V. Castilho and William Ernest Magnusson and Jean-François Molino and Abel Lorenzo Monteagudo and Percy N{\'u}{\~n}ez Vargas and Juan Carlos Montero and Ted R. Feldpausch and Eur{\'i}dice N. Honorio Coronado and Timothy J. Killeen and Bonifacio Mostacedo and R Vasquez and Rafael Leandro de Assis and John W. Terborgh and Florian Wittmann and Ana Andrade and William F. Laurance and Susan G. W. Laurance and Beatriz Schwantes Marimon and Ben Hur Marimon and I C Guimar{\~a}es Vieira and I{\^e}da Le{\~a}o do Amaral and Roel J. W. Brienen and Hern{\'a}n Castellanos and Dairon C{\'a}rdenas L{\'o}pez and J F Duivenvoorden and Hugo F. Mogoll{\'o}n and Francisca Dion{\'i}zia de Almeida Matos and N{\'a}llarett D{\'a}vila and Roosevelt Garc{\'i}a‐Villacorta and Pablo Roberto Stevenson Diaz and Fl{\'a}via Regina Capelotto Costa and Thaise Em{\'i}lio and Carolina Levis and Juliana Schietti and P Souza and Alfonso Alonso and Francisco Dallmeier and {\'A}lvaro Javier Duque Montoya and Maria Teresa Fernandez Piedade and Alejandro Araujo-Murakami and Luzmila Arroyo and Rogerio Gribel and Paul V. A. Fine and Carlos Augusto Peres and Marisol Toledo and Gerardo A. Aymard C. and Timothy R. Baker and Carlos E. Cer{\'o}n and Julien Engel and Terry W. Henkel and Paul J. M. Maas and Pascal P{\'e}tronelli and Juliana Stropp and Charles Eugene Zartman and Doug Daly and David A. Neill and Marcos Silveira and Marcos A. Rios Paredes and J{\'e}r{\^o}me Chave and Di{\'o}genes de Andrade Lima Filho and Peter M{\o}ller J{\o}rgensen and Alfredo F. Fuentes and Jochen Sch{\"o}ngart and Fernando Cornejo Valverde and Anthony Di Fiore and Eliana M. Jimenez and Mar{\'i}a Cristina Pe{\~n}uela Mora and Juan Phillips and Gonzalo Galilaeo Rivas and Tinde R. van Andel and P von Hildebrand and B Hoffman and Egl{\'e}e L. Zent and Yadvinder S. Malhi and Adriana Prieto and Agust{\'i}n Rudas and Ademir R. Ruschell and Natalino Silva and Vincent A. Vos and Stanford Zent and Alexandre A. de Oliveira and Angela Cano Schutz and T Gonzales and Marcelo Trindade Nascimento and Hirma Ramírez-Angulo and Rodrigo Sierra and Milton Tirado and Mar{\'i}a Natalia Uma{\~n}a Medina and Geertje M. F. van der Heijden and C{\'e}sar I. A. Vela and Emilio Vilanova Torre and Corine F. Vriesendorp and Ophelia Wang and Kenneth R. Young and Cl{\'a}udia Baider and Henrik Balslev and Cid Ferreira and Italo Mesones and Armando Torres‐Lezama and Ligia Estela Urrego Giraldo and Roderick Zagt and Miguel Alexiades and Lionel Hernandez and Isau Huamantupa-Chuquimaco and William Milliken and Walter Palacios Cuenca and Daniela Pauletto and Elvis H. Valderrama Sandoval and Luis VALENZUELA GAMARRA and Kyle G. Dexter and Kenneth J. Feeley and Gabriela Lopez-Gonzalez and Miles R. Silman},
Introduction Recent decades have seen a major international effort to inventory tree communities in the Amazon Basin and Guiana Shield (Amazonia), but the vast extent and record diversity of these forests have hampered an understanding of basinwide patterns. To overcome this obstacle, we compiled and standardized species-level data on more than half a million trees in 1170 plots sampling all major lowland forest types to explore patterns of commonness, rarity, and richness. A map of Amazonia… 

Rarity of monodominance in hyperdiverse Amazonian forests

Mining of the ATDN dataset suggests that monodominance is quite rare in Amazonia, and may be linked primarily to edaphic factors.

The discovery of the Amazonian tree flora with an updated checklist of all known tree taxa

A checklist of all tree species collected to date in Amazonia is provided, and it is found that a species’ range size is a better predictor of the number of times it has been collected than thespecies’ estimated basin-wide population size.

Beyond forests in the Amazon: biogeography and floristic relationships of the Amazonian savannas

Improved representation of the flora of these sites is provided, with more insight into the relationship between the Amazonian savanna sites and other vegetation types, and it is worrying that recent changes of the Brazilian legislation place open environments, such as PEMA, in the path of vulnerability to disturbance and destruction.

Evidence for Landscape Transformation of Ridgetop Forests in Amazonian Ecuador

The Napo River basin, which is situated within the Upper Amazon archaeological region, is one of the most speciose forests in Greater Amazonia. Standard thinking in scholarship and science holds

Amazon tree dominance across forest strata

It is demonstrated that it is essential to consider all forest strata to understand regional patterns of dominance and composition in Amazonia, and a tractable pathway for understanding the functioning of half of Amazonian forests across vertical strata and geographical locations is outlined.

Tree dominance and diversity in Minas Gerais, Brazil

Quantifying diversity is an old challenge for ecologists and is also a social demand given the increasing threats to natural areas. We sought to work on these issues by using data from 158 vegetation

Ancient Amazonian populations left lasting impacts on forest structure

Amazonia contains a vast expanse of contiguous tropical forest and is influential in global carbon and hydrological cycles. Whether ancient Amazonia was highly disturbed or modestly impacted, and how

Beta diversity and oligarchic dominance in the tropical forests of Southern Costa Rica

Recent studies have reported a consistent pattern of strong dominance of a small subset of tree species in neotropical forests. These species have been called “hyperdominant” at large geographical

Ancient human disturbances may be skewing our understanding of Amazonian forests

Examining whether Amazonian forest inventory plot locations are spatially biased toward areas with high probability of ancient human impacts reveals that forest inventory plots, and especially forest recensus plots, in all regions of Amazonia are located disproportionately near archaeological evidence and in areas likely to haveAncient human impacts.


Amazonian forests are the largest and most diverse in the tropics, and much of the mystery surrounding their ecology can be traced to attempts to understand them through tiny local inventories. In

Continental-scale patterns of canopy tree composition and function across Amazonia

By using the seven forest inventories complemented with trait and inventory data collected elsewhere, two dominant gradients in tree composition and function across the Amazon are shown, one paralleling a major gradient in soil fertility and the other paralleled a gradient in dry season length.

Historical Human Footprint on Modern Tree Species Composition in the Purus-Madeira Interfluve, Central Amazonia

The results strongly suggest that past forest manipulation was not limited to the pre-Columbian settlements along major rivers, but extended over interfluvial areas considered to be primary forest today.

Sparse Pre-Columbian Human Habitation in Western Amazonia

Analysis of soils in western Amazonia finds little evidence for pre-Columbian human occupations there, and indicates that human impacts on interfluvial forests were small, infrequent, and highly localized.

Oligarchies in Amazonian tree communities: a ten‐year review

Th is paper revisits various hypotheses about oligarchic patterns in Amazonian tree communities put forward by Pitman et al. (2001). Together, these hypotheses predict that most lowland sites in the

How many tree species are there in the Amazon and how many of them will go extinct?

This work uses neutral theory to estimate the number, relative abundance, and range size of tree species in the Amazon metacommunity and estimate likely tree-species extinctions under published optimistic and nonoptimistic Amazon scenarios.

Some Attempts to Estimate Species Diversity and Population Density of Trees in Amazonian Forests

Analysis of the data with the aid of PRESTON'S "octave" method suggests that the population densities of many species of trees in the Amazonian Hylea are less than one individual per hectare.

Extinction risks of Amazonian plant species

  • K. FeeleyM. Silman
  • Environmental Science
    Proceedings of the National Academy of Sciences
  • 2009
It is predicted that by 2050, human land-use practices will have reduced the habitat available to Amazonian plant species by ≈12–24%, resulting in 5–9% of species becoming “committed to extinction,” significantly fewer than other recent estimates.

An Estimate of the Number of Species of Trees in an Amazonian Forest Community

1. As many as 1482 trees 10 cm. or more in diameter, belonging to 179 species, have been counted on a 3.5-hectare plot in a virgin terra firme forest near Castanhal, Pará, Brazil. Evidence is given

A Classification of Major Naturally-Occurring Amazonian Lowland Wetlands

Our estimates indicate that about 30% of the seven million square kilometers that make up the Amazon basin comply with international criteria for wetland definition. Most countries sharing the Amazon