Title
Scaling issues of neutral theory reveal violations of ecological equivalence for dominant Amazonian tree species
Date Issued
01 July 2019
Access level
open access
Resource Type
journal article
Author(s)
Pos E.
Guevara J.E.
Molino J.F.
Sabatier D.
Bánki O.S.
Pitman N.C.A.
Mogollón H.F.
Neill D.
Phillips O.L.
Cerón C.
Ríos Paredes M.
Fiore A.D.
Rivas-Torres G.
Thomas-Caesar R.
Vriesendorp C.
Young K.R.
Tirado M.
Wang O.
Sierra R.
Mesones I.
Zagt R.
Vasquez R.
Ahuite Reategui M.A.
Palacios Cuenca W.
Valderrama Sandoval E.H.
ter Steege H.
University of Edinburgh
Universidade Estadual de Campinas
Publisher(s)
Blackwell Publishing Ltd
Abstract
Neutral models are often used as null models, testing the relative importance of niche versus neutral processes in shaping diversity. Most versions, however, focus only on regional scale predictions and neglect local level contributions. Recently, a new formulation of spatial neutral theory was published showing an incompatibility between regional and local scale fits where especially the number of rare species was dramatically under-predicted. Using a forward in time semi-spatially explicit neutral model and a unique large-scale Amazonian tree inventory data set, we show that neutral theory not only underestimates the number of rare species but also fails in predicting the excessive dominance of species on both regional and local levels. We show that although there are clear relationships between species composition, spatial and environmental distances, there is also a clear differentiation between species able to attain dominance with and without restriction to specific habitats. We conclude therefore that the apparent dominance of these species is real, and that their excessive abundance can be attributed to fitness differences in different ways, a clear violation of the ecological equivalence assumption of neutral theory.
Start page
1072
End page
1082
Volume
22
Issue
7
Language
English
OCDE Knowledge area
Ecología Conservación de la Biodiversidad
Scopus EID
2-s2.0-85063727801
PubMed ID
Source
Ecology Letters
ISSN of the container
1461023X
Sponsor(s)
Daniel Sabatier and Jean-Fran©cois Molino are supported by an ‘Investissement d’Avenir’ grant managed by Agence Natio-nale de la Recherche (CEBA, ref. ANR-10-LABX-0025).
Sources of information: Directorio de Producción Científica Scopus