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The Unified Neutral Theory of Biodiversity and Biogeography
A study of the issue indicates that it is not a serious problem for neutral theory, and there is sometimes a difference between some of the simulation-based results of Hubbell and the analytical results of Volkov et al. (2003). Expand
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. Expand
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. Expand
Spatial and temporal variation of biomass in a tropical forest: results from a large census plot in Panama
To test whether the AGB of tropical forests is increasing due to climate change, it is proposed that in each forest type, at least 10 hectares of forest be inventoried, and that measurements of the small classes (< 10 cm diameter) as well as large size classes be included. Expand
Beta-Diversity in Tropical Forest Trees
It is found that beta-diversity is higher in Panama than in western Amazonia and that patterns in both areas are inconsistent with the neutral model, suggesting that dispersal limitation, with speciation, influences species turnover. Expand
Neutral theory and relative species abundance in ecology
A theoretical framework for the unified neutral theory of biodiversity and an analytical solution for the distribution of the RSA both in the metacommunity (Fisher's log series) and in the local community, where there are fewer rare species. Expand
Mortality Rates of 205 Neotropical Tree and Shrub Species and the Impact of a Severe Drought
Predicting how tropical forests will respond to climatic perturbations will require much detailed information from many species, and accurate predictions about how tropical trees will suffer more during an extended drought than generalists are required. Expand
Tree Dispersion, Abundance, and Diversity in a Tropical Dry Forest
Patterns of tree abundance and dispersion in a tropical deciduous (dry) forest are summarized. The generalization that tropical trees have spaced adults did not hold. All species were either clumpedExpand
Soil nutrients influence spatial distributions of tropical tree species
It is found that belowground resource availability plays an important role in the assembly of tropical tree communities at local scales and provide the basis for future investigations on the mechanisms of resource competition among tropical tree species. Expand