DivPart {entropart} R Documentation

## Diversity Partition of a metacommunity

### Description

Partitions the diversity of a metacommunity into alpha and beta components.

### Usage

DivPart(q = 1, MC, Biased = TRUE, Correction = "Best", Tree = NULL,
Normalize = TRUE, Z = NULL, CheckArguments = TRUE)
is.DivPart(x)
## S3 method for class 'DivPart'
plot(x, ...)
## S3 method for class 'DivPart'
autoplot(object, col = ggplot2::GeomRect$default_aes$fill,
border = ggplot2::GeomRect$default_aes$colour, ...)
## S3 method for class 'DivPart'
summary(object, ...)


### Arguments

 q A number: the order of diversity. Default is 1. MC A MetaCommunity object. Biased Logical; if FALSE, a bias correction is appplied. Correction A string containing one of the possible corrections. The correction must be accepted by AlphaEntropy, BetaEntropy and GammaEntropy. "Best" is the default value. Tree An object of class hclust, phylo, phylog or PPtree. The tree must be ultrametric. Normalize If TRUE (default), diversity is not affected by the height of the tree. If FALSE, diversity is proportional to the height of the tree. Z A relatedness matrix, i.e. a square matrix whose terms are all positive, strictly positive on the diagonal. Generally, the matrix is a similarity matrix, i.e. the diagonal terms equal 1 and other terms are between 0 and 1. CheckArguments Logical; if TRUE, the function arguments are verified. Should be set to FALSE to save time when the arguments have been checked elsewhere. x An object to be tested or plotted. object A MCdiversity object to be summarized or plotted. col The color used to fill the bars. See "Color Specification" in par. border The color of the borders around the bars. See rect. ... Additional arguments to be passed to the generic methods.

### Details

DivPart partitions the diversity of the metacommunity into alpha and beta components. It supports estimation-bias correction.

If Tree is provided, the phylogenetic diversity is calculated else if Z is not NULL, then similarity-based entropy is calculated.

Beta diversity/entropy is calculated from Gamma and Alpha when bias correction is required, so community values are not available.

### Value

A DivPart object. It is a list:

 MetaCommunity The name of the MetaCommunity object containing inventory data. Order The value of q. Biased Logical. If FALSE, bias corrected values of diversity have been computed. Correction The estimation bias correction used to calculate diversity. Method The method used to calculate entropy ("HCDT", "Similarity-based"). Tree The phylogenetic or functional tree used to calculate phylodiversity. Normalized Logical. Indicates whether phylodiversity is normalized or proportional to the height of the tree. Z The matrix used to calculate similarity-based entropy. TotalAlphaDiversity The alpha diversity of communities. TotalBetaDiversity The beta diversity of communities. GammaDiversity The gamma diversity of the metacommunity. CommunityAlphaDiversities A vector containing the alpha diversity of each community. TotalAlphaEntropy The alpha entropy of communities. TotalBetaEntropy The beta entropy of communities. GammaEntropy The gamma entropy of the metacommunity. CommunityAlphaEntropies A vector containing the alpha entropy of each community.

DivPart objects can be summarized and plotted.

### Author(s)

Eric Marcon <Eric.Marcon@agroparistech.fr>, Bruno Herault <Bruno.Herault@cirad.fr>

### References

Marcon, E., Herault, B., Baraloto, C. and Lang, G. (2012). The Decomposition of Shannon's Entropy and a Confidence Interval for Beta Diversity. Oikos 121(4): 516-522.

Marcon, E., Scotti, I., Herault, B., Rossi, V. and Lang, G. (2014). Generalization of the partitioning of Shannon diversity. PLOS One 9(3): e90289.

Marcon, E., Herault, B. (2015). Decomposing Phylodiversity. Methods in Ecology and Evolution 6(3): 333-339.

Marcon, E., Zhang, Z. and Herault, B. (2014). The decomposition of similarity-based diversity and its bias correction. HAL hal-00989454(version 3).

DivProfile
# Load Paracou data (number of trees per species in two 1-ha plot of a tropical forest)