iucnredlist

SpeciesareclassifiedbytheIUCNRedListintoninegroups,specifiedthroughcriteriasuchasrateofdecline,populationsize,areaofgeographic ...,TheIUCNRedListCategoriesandCriteriaareintendedtobeaneasilyandwidelyunderstoodsystemforclassifyingspeciesathighriskofglobalextinction.,TheIUCNRedListisacriticalindicatorofthehealthoftheworld'sbiodiversity.Farmorethanalistofspeciesandtheirstatus,itisapowerfultoolto ....

參考資訊如下
IUCN Red List

Species are classified by the IUCN Red List into nine groups, specified through criteria such as rate of decline, population size, area of geographic ...

IUCN Red List Categories and Criteria

The IUCN Red List Categories and Criteria are intended to be an easily and widely understood system for classifying species at high risk of global extinction.

IUCN Red List of Threatened Species

The IUCN Red List is a critical indicator of the health of the world's biodiversity. Far more than a list of species and their status, it is a powerful tool to ...

Red List Index

The Red List Index (RLI) shows trends in overall extinction risk for species, and is used by governments to track their progress towards targets for reducing ...

Summary Statistics

Summary Statistics. Summary Statistics. The numbers of species listed in each Red List Category change each time The IUCN Red List is updated.