FRESCALO implemented in R
FRESCALO is a method to correct biological recording data for variation in recorder effort. The method is described in Hill, MO (2012) Local frequency as a key to interpreting species occurrence data when recording effort is not known, Methods in Ecology and Evolution, doi: 10.1111/j.2041-210X.2011.00146.x
The original method is a FORTRAN program. This R script takes the same input files as FRESCALO:
- a weights file (defining a neighbourhood around a focal region)
- a species file giving the species observed at each region, and the date of the observation
More information about FRESCALO at http://www.brc.ac.uk/biblio/frescalo-computer-program-analyse-your-biological-records and https://github.com/BiologicalRecordsCentre/sparta/wiki/frescalo