CpE {treesliceR}

Calculates the rate of accumulation of phylogenetic endemism (CpE) over time slices

Description

This function estimates the rates of accumulation of phylogenetic endemism (CpE) over time for inputted assemblages.

Usage

CpE(tree, n, mat, criterion = "my", pEO = 5, ncor = 0)

Arguments

tree

phylo. An ultrametric phylogenetic tree in the "phylo" format.

n

numeric. A numeric value indicating the number of temporal slices (method = 1) or the time interval in million years (or phylogenetic diversity) among the tree slices (method = 2). Default is 1.

mat

matrix. A presence/absence matrix containing all studied species and sites.

criterion

character string. The method for cutting the tree. It can be either "my" (million years) or "PD" (accumulated phylogenetic diversity). Default is "my".

pEO

numeric. A value indicating the numeric proportion to define the temporal origin at which the phylogenetic endemism (PE) started to accumulate in a given assemblage. Default is 5%.

ncor

numeric. A value indicating the number of cores the user wants to parallelize. Default is 0.

Details

Parallelization

Users are advised to check the number of available cores within their machines before running parallel programming.

Value

The function returns a data frame containing the assemblages' rates of cumulative phylogenetic endemism (CpE), their total phylogenetic endemism (PE), and their PE origin (pEO).

Author(s)

Matheus Lima de Araujo [e-mail]

See Also

Other cumulative phylogenetic index analysis: CpD(), CpB(), CpB_RW()

Examples

# Generate a random tree
tree <- ape::rcoal(20)

# Create a presence-absence matrix
mat <- matrix(sample(c(1,0), 20*10, replace = TRUE), ncol = 20, nrow = 10)
colnames(mat) <- tree$tip.label

# Calculate the CpE for 100 tree slices
CpE(tree, n = 100, mat = mat)