calcule method for report_species
' the number will be split according to the split argument passed to the class, e.g. per year or month or week. Data from different DC will be grouped. Counts are given per taxa, unless there are several stages, in which case the counts correspond to taxa + stage.
# S4 method for report_species calcule(object, silent = FALSE)
An object of class
Boolean, if TRUE, information messages are not displayed, only warnings and errors
with calcdata slot filled.