R: Distribution of of tropical trees along the Panama canal

pcw {ade4} | R Documentation

## Distribution of of tropical trees along the Panama canal

### Description

Abundance of tropical trees, environmental variables and spatial coordinates for 50 sites. Data are available at https://science.sciencemag.org/content/suppl/2002/01/24/295.5555.666.DC1 but plots from Barro Colorado Island were removed.

### Usage

    data(pcw)

### Format

A list with 5 components.

spe

  Distribution of the abundances of 778 species in 50 sites

env

  Measurements of environmental variables for the 50 sites

xy

  Spatial coordinates for the sites (decimal degrees)

xy.utm

  Spatial coordinates for the sites (UTM)

map

  Map of the study area stored as a SpatialPolygons object

### Source

Condit, R., N. Pitman, E. G. Leigh, J. Chave, J. Terborgh, R. B. Foster, P. Núnez, S. Aguilar, R. Valencia, G. Villa, H. C. Muller-Landau, E. Losos, and S. P. Hubbell. (2002) Beta-diversity in tropical forest trees. Science, 295, 666-669.

Pyke, C. R., R. Condit, S. Aguilar, and S. Lao. (2001) Floristic composition across a climatic gradient in a neotropical lowland forest. Journal of Vegetation Science, 12, 553–566.

### References

Dray, S., R. Pélissier, P. Couteron, M. J. Fortin, P. Legendre, P. R. Peres-Neto, E. Bellier, R. Bivand, F. G. Blanchet, M. De Caceres, A. B. Dufour, E. Heegaard, T. Jombart, F. Munoz, J. Oksanen, J. Thioulouse, and H. H. Wagner. (2012) Community ecology in the age of multivariate multiscale spatial analysis. Ecological Monographs, 82, 257–275.

### Examples

    if(adegraphicsLoaded()) {
      data(pcw)
      if(requireNamespace("spdep", quietly = TRUE)) {
        nb1 <- spdep::graph2nb(spdep::gabrielneigh(pcw$xy.utm), sym = TRUE)
        s.label(pcw$xy, nb = nb1, Sp = pcw$map)
      }
    }

[Package ade4 version 1.7-16 Index]