| eff_num_func_d {multifunc} | R Documentation |
eff_num_func_d
Description
eff_num_func_d
Usage
eff_num_func_d(adf_freq, q = 1, D, tau = NULL)
Arguments
adf_freq |
A data frame of functional "frequencies" - i.e. f_i/sum(f_i) |
q |
Order of hill number used for index. Defaults to q=1, as in Shannon Diversity |
D |
A distance matrix describing dissimilarity between functions. |
tau |
A cutoff for degree of dissimilarity under which functions are considered to be different. If tau is the minimum non-zero value of D, all functions are different. if tau is the maximum value of D are greater, all functions are considered the same. |
Value
A vector of effective number of functions
References
Chao, A., Chiu, C.-H., Villéger, S., Sun, I.-F., Thorn, S., Lin, Y.-C., Chiang, J.-M. and Sherwin, W. B. 2019. An attribute-diversity approach to functional diversity, functional beta diversity, and related (dis)similarity measures. Ecological Monographs. 89: e01343.