IUCN Red List taxa by class — rl

Retrieve species assessments by taxonomic class. If class_name = NULL, it returns a list of available classes. If class_name is provided, it retrieves assessments for species in the specified class.

Usage

rl_classes(
  class_name = NULL,
  year_published = NULL,
  latest = NULL,
  scope_code = NULL,
  page = 1
)

Arguments

class_name: Character. The class name (e.g., "Mammalia"). Use rl_classes() to list available classes.
year_published: Optional. Single or numeric vector of years to filter assessments by publication year.
latest: Optional. Logical. If TRUE, return only the latest assessment per species.
scope_code: Optional. Integer One or more scope codes to filter assessments.
page: Optional. Integer vector. Specify one or more page numbers to fetch. If NULL or NA, all pages will be fetched automatically.

Value

A tibble (class tbl_df, tbl, data.frame) where each column represents a unique API response JSON key. If class_name = NULL, the tibble contains available taxonomic classes with a column for class names. If class_name is provided, the tibble contains assessment data for the specified class, including taxon details, red list category, year, and other relevant metadata.

Examples

if (FALSE) { # \dontrun{
# List all available classes
rl_classes()

# Get assessments for Mammalia class
rl_classes(class_name = "Mammalia")

# Get latest Aves assessments published since 2024
rl_classes(
  class_name = "Aves",
  year_published = 2024:2025,
  latest = TRUE
)
} # }