| FunImbalance {adiv} | R Documentation |
Indices of functional imbalance
Description
The function FunImbalance calculates functional imbalance within species communities, as an indicator of the strength of interaction between
species abundances and their functional dissimilarities.
Usage
FunImbalance(comm, dis, method = c("CorB", "SESB", "QB"), nrep = 10000, tol = 1e-16)
Arguments
comm |
matrix or data frame with communities as rows, species as columns and abundance data as entries. |
dis |
an object of class dist that provides the functional dissimilarities between species. |
method |
a character string: one or a vector of "CorB", "SESB", and "QB". The strings indicate the name of the index of functional imbalance that must be used. |
nrep |
an integer. The number of repetitions (permutations) to use in the calculation of SESB and QB. |
tol |
a tolerance number: a value in [-tol, tol] is considered as zero. |
Value
The function betaUniqueness returns a data frame with communities as rows and the selected indices of functional imbalance as columns.
Author(s)
Sandrine Pavoine sandrine.pavoine@mnhn.fr
References
Ricotta, C., Bacaro, G., Maccherini, S., Pavoine, S. (2022) Functional imbalance not functional evenness is the third component of community structure, Contact author for information
Examples
data(RutorGlacier)
fundis <- dist(scale(RutorGlacier$Traits2[1:6]))
fundis <- fundis/max(fundis)
funImb <- FunImbalance(RutorGlacier$Abund, fundis, method = "CorB")
funImb