make.cepnames {vegan}R Documentation

Abbreviates a Botanical or Zoological Latin Name into an Eight-character Name


A standard CEP name has four first letters of the generic name and four first letters of the specific epithet of a Latin name. The last epithet, that may be a subspecific name, is used in the current function. If the name has only one component, it is abbreviated to eight characters (see abbreviate). The returned names are made unique with function make.unique which adds numbers to the end of CEP names if needed.




names The names to be formatted into CEP names.


Cornell Ecology Programs (CEP) used eight-letter abbreviations for species and site names. In species, the names were formed by taking four first letters of the generic name and four first letters of the specific or subspecific epithet. The CEP names were originally used, because old FORTRAN IV did not have CHARACTER data type, but text had to be stored in numerical variables, which in popular computers could hold four characters. In modern times, there is no reason for this limitation, but ecologists are used to these names, and they may be practical to avoid congestion in ordination plots.


Function returns CEP names.


The function is simpleminded and rigid. You must write a better one if you need.


Jari Oksanen

See Also

make.names, strsplit, substring, paste, abbreviate.


make.cepnames(c("Aa maderoi", "Poa sp.", "Cladina rangiferina",
"Cladonia cornuta", "Cladonia cornuta var. groenlandica",
"Cladonia rangiformis", "Bryoerythrophyllum"))
colnames(BCI) <- make.cepnames(colnames(BCI))

[Package vegan version 1.16-32 Index]