Toy model to simulate internal and/or external filtering

Usage

RandCom(Ncom = 10, Nsp = 20, Nind.com = 100, sdlog = 1.5, 
  min_value_traits = 80, max_value_traits = 200, 
  cv_intra_sp = 1.5, cv_intra_com = 1.5, 
  Int_Filter_Strength = 50, Ext_Filter_Strength = 50, Filter="None")

Arguments

Ncom: Number of communities (or sites).
Nsp: Number of species at the regional scale.
Nind.com: Number of individuals by communities.
sdlog: Parameter of the log normal distribution for species abundances distribution within communities.
min_value_traits: Minimum mean value for traits distributions.
max_value_traits: Maximum mean value for traits distributions.
cv_intra_sp: Coefficient of variation for intra-specific distributions. The more the value is high the less there is internal filtering. Used only for the trait 1 (normally distributed).
cv_intra_com: Coefficient of variation for intra-community distributions. The more the value is high the less there is external filtering. Used only for the trait 1 (normally distributed)
Int_Filter_Strength: Strength of internal filtering in percentage. Use in addition to cv_intra_sp by distributing mean species trait more or less evenly. In the most extreme case (if Int_Filter_Strength==100), species have equally distributed mean values along the trait gradient.
Ext_Filter_Strength: Strength of external filtering in percentage. Use in addition to cv_intra_com by distributing mean communities trait more or less evenly. In the most extreme case (if Ext_Filter_Strength==100), communities have equally distributed mean values along the trait gradient.
Filter: The type of filter to simulate. Either "None", "Internal", "External" or "Both"

Details

In this version of the function, the trait 1 follows a normal distribution wheras the trait 2 follows a uniform distribution.

Value

$data$com: Vector of simulated communities for each individual.
$data$sp: Vector of simulated species for each individual.
$data$trait1: Vector of simulated value for the trait 1: normally distributed.
$data$trait2: Vector of simulated value for the trait 2: normally distributed.
$call: call of the function Tstats

Author

Cecile Albert and Adrien Taudiere

Examples

  res <- RandCom()