Beta-Diversity in Tropical Forest Trees

  title={Beta-Diversity in Tropical Forest Trees},
  author={Richard S. Condit and Nigel C. A. Pitman and Egbert Giles Leigh and J{\'e}r{\^o}me Chave and John W. Terborgh and Robin B. Foster and Percy Núñez and Salomón Aguilar and Renato Valencia and Gorky Villa and Helene C. Muller‐Landau and Elizabeth Losos and Stephen P. Hubbell},
  pages={666 - 669}
The high alpha-diversity of tropical forests has been amply documented, but beta-diversity—how species composition changes with distance—has seldom been studied. We present quantitative estimates of beta-diversity for tropical trees by comparing species composition of plots in lowland terra firme forest in Panama, Ecuador, and Peru. We compare observations with predictions derived from a neutral model in which habitat is uniform and only dispersal and speciation influence species turnover. We… 

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

Beta-diversity in temperate and tropical forests reflects dissimilar mechanisms of community assembly.

It is suggested that biogeographical differences in the relative importance of different community assembly mechanisms contribute to these striking gradients in global biodiversity.

Biogeographic History and the High Beta-Diversity of Rainforest Trees in Panama

In a recent study examining the degree to which tree species composition differs among rainforest sites (i.e., β-diversity), Condit et al. (2002) found that plots in the Panama Canal Watershed

Global Correlations in Tropical Tree Species Richness and Abundance Reject Neutrality

It is found that the number of species and individuals in families of trees in forest plots are strongly correlated across Southeast Asia, Africa, and tropical America, which implies that deterministic processes influenced by evolutionarily conservative family-level traits constrain thenumber of confamilial tree species and Individuals that can be supported in regional species pools and local assemblages in humid tropical forests.

Herbivory, growth rates, and habitat specialization in tropical tree lineages: implications for Amazonian beta‐diversity

Overall, focal species within lineages present contrasting patterns regarding their herbivory rates and leaf production rate within habitats, which highlights why a lineage-based approach is necessary when attempting to connect hypotheses regarding evolutionary trade-offs to community assembly patterns.

Flooding and soil composition determine beta diversity of lowland forests in Northern South America

Beta diversity may be determined by dispersal limitation, environment, and phylogeographic history. Our objective was to advance the understanding of plant species turnover in rain forests in

Historical effects on beta diversity and community assembly in Amazonian trees

The results suggest that the observed distance decay is the result not of environmental gradients or dispersal limitation coupled with ecological drift—as conventionally interpreted under neutral ecological theory—but rather of secondary contact between historically separated communities.

How individual species structure diversity in tropical forests

This work proposes individual species–area relationships (ISAR), a spatial statistic that marries common species– area relationships with Ripley's K to measure the expected α diversity in circular neighborhoods with variable radius around an arbitrary individual of a target species.

Mechanisms of community assembly explaining beta‐diversity patterns across biogeographic regions

Aim: We examined tree beta diversity in four biogeographical regions with contrast ing environmental conditions, latitude, and diversity. We tested: (a) the influence of the species pool on beta

Environmental characteristics drive variation in Amazonian understorey bird assemblages

It is indicated that complex geography and landscape features can act together with environmental variables to drive changes in the diversity and composition of tropical bird assemblages at local scales, but highlights that very little is known about what makes different parts of tropical forest suitable for different species.



Habitat associations of trees and shrubs in a 50‐ha neotropical forest plot

To the extent that habitat association reflects habitat specialization, the results suggest that local habitat specialization plays a limited role in the maintenance of species diversity in this forest.

How natural habitat patchiness affects the distribution of diversity in Californian serpentine chaparral

Woody plants on nonserpentine soils showed diversity patterns similar to those on patchy serpentine, i.e., lower alpha and higher beta and gamma diversity relative to continuous serpentine.

Seed Dispersal Near and Far: Patterns Across Temperate and Tropical Forests

Dispersal affects community dynamics and vegetation response to global change. Understanding these effects requires descriptions of dispersal at local and regional scales and statistical models that

Estimating species-area relationships from plot to landscape scale using species spatial-turnover data

Vegetation census data from montane meadow plots are used to test a predicted connection between the species-area relationship, S = cA z , and the dependence of interpatch species turnover on patch


A method for calibrating spatial models of plant recruitment that does not require identifying the specific parent of each recruit is presented, which calibrates seedling recruitment functions by comparing tree seedling distributions with adult distributions via a maximum likelihood analysis, and predicts the spatial distributions of seedlings from adult distributions.

Self-similarity in the distribution and abundance of species

If the fraction of species in area A that are also found in one-half of that area is independent of A, the distribution of species is self-similar and a number of observed patterns in ecology,

Why Trees Migrate So Fast: Confronting Theory with Dispersal Biology and the Paleorecord

  • J. Clark
  • Environmental Science
    The American Naturalist
  • 1998
Field estimates of seed dispersal with an integrodifference equation and simulation models of population growth to show that dispersal data are compatible with rapid spread, and predicts that velocity is more sensitive to life history than is classical diffusion.

Decay of genetic variability in geographically structured populations.

  • T. Nagylaki
  • Economics
    Proceedings of the National Academy of Sciences of the United States of America
  • 1977
The ultimate rate and pattern of approach to equilibrium of a diploid, monoecious population subdivided into a finite number of equal, large, panmictic colonies are calculated and every mutant is assumed to be new to the population.

Spatial patterns in the distribution of tropical tree species.

The degree of aggregation in the distribution of 1768 tree species is examined based on the average density of conspecific trees in circular neighborhoods around each tree, and it is found that nearly every species was more aggregated than a random distribution.

25-ha plot in Yasunı́ National Park in Ecuador. As in the larger Panamanian plots, the Yasunı́ plot was treated as 25 separate 1-ha plots for this analysis and only trees

  • Sobre Diversidad y Ecologı́a de Plantas,
  • 1997