This function returns distribution information as found on the Distribution
tab from the Global Invasive Species Database:
http://www.iucngisd.org/gisd/
Because of how the GISD webservice is designed, it is possible to have the
same country listed under both native and invasive distributions. This is
because the species in question is native to one part of the country and
invasive in another part of that country. See the GISD website for more
detailed information.
This function queries a static version of the database, which will be
updated periodically.
To see when these datasets were last updated for this R package, run
downloadDates
.