In previous gap analyses we have used GBIF not only as sources of H (reference specimens) but also G (ex situ records), by filtering for "living specimen" (here's the text from our methods section from 2020 paper: "For GBIF records, we filtered on the “Basis of Record” field, assigning “living specimen” records as G, with the other categories (observation, literature, preserved specimen, human observation, machine observation, material sample, and unknown) assigned as H."
Note from Colin
In previous gap analyses we have used GBIF not only as sources of H (reference specimens) but also G (ex situ records), by filtering for "living specimen" (here's the text from our methods section from 2020 paper: "For GBIF records, we filtered on the “Basis of Record” field, assigning “living specimen” records as G, with the other categories (observation, literature, preserved specimen, human observation, machine observation, material sample, and unknown) assigned as H."