Returns a count of the number of unique species which have assessments
Arguments
- key
(character) An IUCN API token. See
rl_use_iucn
.- ...
Curl options passed to
HttpClient
Value
A list unless using a function with a trailing underscore, in which case json as character string is returned.
References
API docs at https://api.iucnredlist.org/.
See also
Red List information and statistics:
rl_api_version()
,
rl_citation()
,
rl_version()