1. Select a taxonomic group* that is well represented in the local government area (and surrounding region) and assessed in a national/local/IUCN Red List**.

2. Measure richness by recording the number of endemic species from the selected taxonomic group that are present within a given timeframe and that have been assessed in national/local/global Red Lists of endangered species or another spatially explicit database.

3. Calculate the percentage of the total number of assessed endemic species that are considered threatened (e.g. species listed as “vulnerable”, “endangered” or “critically endangered” as per IUCN Red List conservation status, or equivalent local/national lists).

* According to IUCN Red List species, amphibians conifers, crustaceans, birds, mammals, reptiles are taxonomic groups most commonly assessed and threatened with extinction.
** Authors recommend considering species assessed within the last five years, to allow for comparability between reporting periods. When new endemic species are added to species count from one assessment to another, this shall be stated in the limitation as it will limit comparability over time (Butchart et al., 2007)

Basic: Assess only one taxonomic group

Advanced: Repeat steps 1–3 for at least two additional taxonomic groups.

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