ade4: pcw – R documentation

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pcw

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)
  }
}

ade4

Analysis of Ecological Data: Exploratory and Euclidean Methods in Environmental Sciences

v1.7-16

GPL (>= 2)

Authors

Stéphane Dray <stephane.dray@univ-lyon1.fr>, Anne-Béatrice Dufour <anne-beatrice.dufour@univ-lyon1.fr>, and Jean Thioulouse <jean.thioulouse@univ-lyon1.fr>, with contributions from Thibaut Jombart, Sandrine Pavoine, Jean R. Lobry, Sébastien Ollier, Daniel Borcard, Pierre Legendre, Stéphanie Bougeard and Aurélie Siberchicot. Based on earlier work by Daniel Chessel.

Initial release

pcw