pcw: Distribution of of tropical trees along the Panama canal

In sdray/ade4: Analysis of Ecological Data: Exploratory and Euclidean Methods in Environmental Sciences

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 \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1126/science.1066854")} 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)
  }
}

sdray/ade4 documentation built on March 30, 2024, 12:33 a.m.