map_trait function

Map species' trait values in geographic space

map_trait add species trait values to species distribution in geographic space.

map_trait(x, trait, FUN = sum, pol = NULL, ...)

Arguments

• x: A community data object - a vector (with names matching trait data) or a data.frame or matrix (with column names matching names in trait data)
• trait: A data.frame of species traits with a column of species names matching species names in the community data, and another column with the trait values.
• FUN: The function used to aggregate species trait values in geographic space. By default, if FUN = sum, the sum of all species traits per area or grid cell is calculated.
• pol: a vector polygon of grid cells.
• ...: Further arguments passed to or from other methods.

Returns

A data frame of species traits by site.

Examples

data(africa)
library(terra)
p <- vect(system.file("ex/sa.json", package = "phyloregion"))
x <- EDGE(africa$IUCN, africa$phylo, Redlist = "IUCN",
          species = "Species")
y <- map_trait(africa$comm, x, FUN = sd, pol = p)

plot(y, "traits", col = hcl.colors(n=20, palette = "Blue-Red 3", rev=FALSE))

Author(s)

Barnabas H. Daru darunabas@gmail.com