A spatial model of tree α-diversity and tree density for the Amazon

  title={A spatial model of tree $\alpha$-diversity and tree density for the Amazon},
  author={Hans ter Steege and Nigel C. A. Pitman and Daniel Sabatier and Hern{\'a}n G. Castellanos and Peter van der Hout and Douglas C. Daly and Marcos Silveira and Oliver L. Phillips and R Vasquez and Tinde R. van Andel and J F Duivenvoorden and Alexandre Adalardo de Oliveira and Renske Ek and Ramesh Lilwah and Raquel S. Thomas and Jessica Van Essen and Cl{\'a}udia Baider and Paul J. M. Maas and Scott A. Mori and John Terborgh and Percy N{\'u}{\~n}ez Vargas and Hugo F. Mogoll{\'o}n and Wilfried Morawetz},
  journal={Biodiversity \& Conservation},
Large-scale patterns of Amazonian biodiversity have until now been obscured by a sparse and scattered inventory record. Here we present the first comprehensive spatial model of tree α-diversity and tree density in Amazonian rainforests, based on the largest-yet compilation of forest inventories and bolstered by a spatial interpolation technique that allows us to estimate diversity and density in areas that have never been inventoried. These data were then compared to continent-wide patterns of… 
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.
Mapping tree diversity in the tropical forest region of Chocó-Colombia
Understanding spatial patterns of diversity in tropical forests is indispensable for their sustainable use and conservation. Recent studies have reported relationships between forest structure and
Insights into regional patterns of Amazonian forest structure, diversity, and dominance from three large terra-firme forest dynamics plots
We analyze forest structure, diversity, and dominance in three large-scale Amazonian forest dynamics plots located in Northwestern (Yasuni and Amacayacu) and central (Manaus) Amazonia, to evaluate
Dominant tree species drive beta diversity patterns in western Amazonia.
The results reveal that dominant species play a key role in structuring western Amazonian tree communities, which in turn has important implications, both practically for designing effective protected areas, and more generally for understanding the determinants of beta diversity patterns.
Disentangling regional and local tree diversity in the Amazon
We analyzed the most extensive data set of tree inventory plots spread over the complete Amazon basin and Guiana shield. We aimed to separate the regional and local tree alpha-diversity to
OVERVIEW Understanding the causes of spatial variation in floristic composition is one of the overarching goals of plant ecology. This goal has been challenged by the difficulty of unfolding the
Drivers of tropical rainforest composition and alpha diversity patterns over a 2,520 m altitudinal gradient
There are two well‐defined forest compositional zones on this gradient—lowlands 430–1,120 m asl and montane forests >2,150m asl—with a transitional zone at 1,400–1-600 m asL, where lowland tropical and montana holarctic species are found together.
Patterns of orchid bee species diversity and turnover among forested plateaus of central Amazonia
There was a significant decrease in species richness with decreasing size of plateaus, and a significant decreases in the similarity in species composition with greater distance and climatic variation among sampling sites.
The odd man out? Might climate explain the lower tree α‐diversity of African rain forests relative to Amazonian rain forests?
1 Comparative analyses of diversity variation among and between regions allow testing of alternative explanatory models and ideas. Here, we explore the relationships between the tree α‐diversity of


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.
Tree species distributions in an upper Amazonian forest
Not a single tree species distribution in the Amazon basin has been reliably mapped, though speculation regarding such distributions has been extensive. We present data from a network of 21 forest
Allpahuayo: floristics, structure, and dynamics of a high-diversity forest in Amazonian Peru.
Floristic analysis shows that the Allpahuayo forest is among the most diverse site yet inventoried, and at least 466 species and 61 families in the 1277-stem two-hectare sample, confirming that upper Amazonia is a world center of tree biodiversity.
An analysis of the floristic composition and diversity of Amazonian forests including those of the Guiana Shield
A large number of newly published and unpublished hectare plots in Amazonia and the Guiana Shield area allow an analysis of family composition and testing of hypotheses concerning alpha-diversity in
The composition of Amazonian forests: patterns at local and regional scales
An analysis was conducted of floristic patterns contained in 48 1-ha tree plots distributed at 29 sites in seven neotropical countries, with a primary emphasis on the Amazonian region. Analyses were
A forest inventory in Amazonian Bolivia
A tree inventory was conducted in a terra firme Amazonian rainforest of northeastern Bolivia to provide information about diversity, frequency, density, and dominance, and species and family importance values were calculated.
High tree alpha-diversity in Amazonian Ecuador
This is the highest number of tree species ever recorded for a tropical rain forest sample of this size and in both dbh classes, the most species-rich families were: Fabaceae sensu lato (including Mimosaceae and Caesalpiniaceae), Lauraceae and Sapotaceae; the most Species-rich genera, were Pouteria, Inga and Protium.
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.
Tree species richness of upper Amazonian forests.
  • A. Gentry
  • Environmental Science
    Proceedings of the National Academy of Sciences of the United States of America
  • 1988
Very high tree species richness seems to be a general property of mature lowland evergreen forests on fertile to moderately infertile soils on all three continents.
Tree species distribution and community structure of central Amazonian várzea forests by remote-sensing techniques
In central Amazonian white-water floodplains (várzea), different forest types become established in relation to the flood-level gradient. The formations are characterized by typical patterns of